Geberit Pluvia. Planning manual

Transcription

1 Geberit Pluvia Planning manual Valid as of 1 April 2017

2 Legal Information System design / dimension data This document contains only general, technical information. The design of the Geberit Pluvia roof drainage system, especially the dimensions, must be drawn up and calculated separately for each specific individual application. The dimension data stated in this planning manual is not binding and is in particular subject to works tolerances and possible future modifications. Disclaimer All information contained in this document, which is based on or which refers to standards, ordinances or regulations etc., has been thoroughly researched and compiled with the greatest possible care. However, we cannot guarantee that such information is correct, complete or up to date. Further product information Further product information is available at Copyright All rights reserved. Texts, images, graphics etc. as well as their arrangement are subject to copyright protection. Copyright by Geberit International Sales AG, Rapperswil, 2014

3 Table of contents 1 Product data System description 3 2 Planning Planning rules Roof structure Geberit Pluvia roof outlets Pipe layout Pipe fixation Dimensioning Emergency drainage 57 3 Installation Geberit Pluvia roof outlets Fastening the rainwater pipe 81 4 Initial commissioning 87 5 Maintenance General maintenance notes Maintenance of Geberit Pluvia in areas with large amounts of sand Maintenance intervals and cleaning of Geberit Pluvia roof outlets

4 Table of contents

5 1 Product data 1.1 System description 1 Product data 1.1 System description Overview The Geberit Pluvia roof drainage system allows large roof areas to be drained with just a few roof outlets and stacks. In contrast to conventional roof drainage systems, the piping system is completely filled with water in the case of Geberit Pluvia. As a result, a negative pressure occurs in the piping system, which causes the rainwater to be quickly suctioned off the roof. Due to the suction effect, Geberit Pluvia is significantly more powerful than conventional roof drainage systems. Large roof areas can therefore be drained with just a few stacks. This simplifies planning and reduces costs and building time. Geberit Pluvia can be used in both insulated and noninsulated roofs as well as in gutters. Whether 1000 m 2 or 100,000 m 2 Geberit Pluvia is always the right system Function Functional principle As soon as water enters the hose from the raised receptacle, a pressure difference results between the receptacle and outlet due to the water column in the section h. This pressure difference leads to a negative pressure in the system. As a result, the water is suctioned from the receptacle into the hose. Figure 1: Functional principle of Geberit Pluvia h Height of the water column This suction effect is technically used by Geberit Pluvia. When it rains heavily, the Geberit Pluvia piping system completely fills with water. A closed water column results from the roof outlet to the transition to the conventional piping system. The water accumulates on the roof up to a defined height. The pressure of the accumulated water causes the water column to move through the collector pipe. When the water column falls from the collector pipe into the stack, a negative pressure occurs in the piping system. At the same time, a complete filling is achieved in the piping system. As a result of the negative pressure, the rainwater is suctioned from the roof into the piping system. In order to attain a complete filling of the pipeline and thus the suction effect caused by the negative pressure, no air may enter the piping system. For this reason, the piping system must be precisely dimensioned. The entrance of air is prevented by the design of the Geberit Pluvia roof outlets. They are equipped with a function disc that only allows the rainwater to flow in laterally and thus air-free

6 1 Product data 1.1 System description Difference between Geberit Pluvia and a conventional roof drainage system Behaviour during light rain: In the event of light rain, Geberit Pluvia acts like a conventional roof drainage system. The piping system is only partially filled with rainwater (partial filling). Behaviour during heavy rain: In the event of heavy rain, the conventional roof drainage system remains partially filled. Due to the smaller pipe dimensions, the Geberit Pluvia completely fills up with water (complete filling). The suction effect starts. Figure 2: Conventional roof drainage system during light rain (partial filling) Figure 4: Conventional roof drainage system during heavy rain (partial filling) Figure 3: Geberit Pluvia with light rain (partial filling) Figure 5: Geberit Pluvia with heavy rain (complete filling)

7 1 Product data 1.1 System description Advantages of Geberit Pluvia over conventional roof drainage systems As a result of the complete filling of the piping system, the Geberit Pluvia roof drainage system has several advantages over a conventional roof drainage system. Laying the pipelines without slopes increases planning flexibility and planning security More cost-effective thanks to fewer stacks and underground pipes as well as smaller pipe dimensions Optimal planning, tendering and work preparation with the Geberit ProPlanner software Conventional roof drainage system Many roof outlets Pipes must be laid on a slope Many stacks Complicated underground pipes Large pipe dimensions Roof drainage with Geberit Pluvia Fewer roof outlets due to the high drainage capacity per roof outlet Space savings Reduced construction effort Smaller pipe dimensions Self-cleaning of the pipes due to high flow speeds Architectonic freedom

8 1 Product data 1.1 System description System components Geberit Pluvia consists of the following system components: The Geberit Pluvia roof outlets collect the rainwater that accumulates and prevent air from flowing into the piping system with the rainwater. Geberit Pluvia roof outlets S.O.S The Geberit Pluvia emergency overflows collect rainwater in addition to the roof outlets when the actual rainfall exceeds the drainage capacity of the roof drainage system. Geberit Pluvia emergency overflows The Geberit HDPE piping system is a practice-oriented product range that is characterised by a low weight and absolute tightness of the welding joint. Geberit HDPE piping system The fastening system is for fastening the Geberit HDPE piping system and accommodates its changes in length caused by temperature changes. Fastening system Geberit ProPlanner calculation software Warranty In order for the piping system to be completely filled, it must be precisely dimensioned. The Roof drainage module of the Geberit ProPlanner software calculates the necessary parameters. Geberit Pluvia roof outlets and pipes are dimensioned in such a way that a complete filling of the piping system is ensured. Geberit Pluvia is made of high-quality, long-lasting components. Durable polyethylene (HDPE) is used for the pipes. In addition, you can benefit from Geberit s decades of experience in the fields of planning and design. This is just one of the reasons why with the Geberit Pluvia drainage system reliability is guaranteed

9 1 Product data 1.1 System description Geberit Pluvia roof outlets Overview of roof outlets Flanged With contact sheet/contact seam Flat roof Gutter Flat roof Gutter 6 l l l l l * 60 l * 100 l * * Only for emergency overflow for certain roof outlets x x

10 1 Product data 1.1 System description Geberit Pluvia 9 l and 12 l roof outlets The Geberit Pluvia 9 l and 12 l roof outlets are available in the following versions: For flat roofs: with contact sheet for bitumen roof sealing with fastening flange for plastic roof foils For gutters: with fastening flange with contact seam Item no. Base modules Accessories 1 Emergency overflow 2a 2b Supplementary set, suitable for parking decks Supplementary set, suitable for promenade decks 1 3 Gravel ring, fine, for gravel fraction 8-16 mm 2a 3 2b 4a Roof outlet with contact sheet and fastening flange for roof foils, outlet grating made from aluminium cast 4b Roof outlet with fastening flange for roof foils 4c Roof outlet with contact sheet for gutters 4b 4c 4e 4d Roof outlet with flange for gutters 4a 4f 4d 4e 4f Roof outlet with fastening flange for roof foils Roof outlet with contact sheet 5 5 Heating element 6 Thermal insulation for inverted or insulated roof 6 7 8a 8b Figure 6: Overview of all usable components of the prefabricated Geberit Pluvia roof outlets 7 8a 8c Vapour barrier connection Installation sheet for roof outlet with fastening flange, for roof foils Installation sheet

11 1 Product data 1.1 System description Geberit Pluvia 19 l roof outlets The Geberit Pluvia 19 l roof outlet is available in the following version: For gutters: with contact sheet Figure 7: Components of the Geberit Pluvia 19 l roof outlets Item no. Base modules Accessories 1 Outlet grating 2 Emergency overflow 3 Base unit with contact seam for gutters 4 Heating strip Geberit Pluvia 19 l roof outlets can be combined with 12 l and 25 l roof outlets in a mixed installation

12 1 Product data 1.1 System description Geberit Pluvia 25 l roof outlets Item no. Base modules Accessories The Geberit Pluvia 25 l roof outlet is available in the following version: For flat roof: fastening flange for roof foils contact sheet for bitumen roof sealing For gutters: contact sheet for gutters 1 2a 2b Gravel ring, fine, for gravel size 8-16 mm Supplementary set, suitable for parking decks Supplementary set, suitable for promenade decks 1 3 Outlet grating with integrated function disc 4 Emergency overflow 2a 2b 5a Roof outlet with contact sheet for gutters 5b Roof outlet with fastening flange for roof foils 5c Roof outlet with bitumen contact sheet 6 Heating strip 3 7 Vapour barrier connection 4 25 l roof outlets can be combined with 12 l and 19 l roof outlets in a mixed installation. 5a 5c 5b 6 7 Figure 8: Components of the Geberit Pluvia 25 l roof outlets

13 1 Product data 1.1 System description Geberit Pluvia 45 l, 60 l and 100 l roof outlets Geberit Pluvia 45 l / 60 l / 100 l roof outlets are available for the following types of roof sealing: contact seam for gutters contact sheet for bitumen roof sealing b 4a 5 Figure 9: Components of the Geberit Pluvia 45 l / 60 l / 100 l roof outlets Item no. Base modules Accessories 1 Protection box 2 Wing nut 3 4a 4b Outlet grating with integrated function disc Base unit with contact sheet Base unit with fastening flange 5 Heating strip (only possible for 45 l) Geberit Pluvia roof outlets 45 l / 60 l / 100 l cannot be combined because of their different heads of water, nor can they be combined with Geberit Pluvia 12 l, 19 l and 25 l roof outlets in a mixed installation

14 1 Product data 1.1 System description Geberit Pluvia emergency overflows The Geberit Pluvia emergency overflows consist of: Geberit Pluvia roof outlet Geberit Pluvia emergency overflow set The roof outlet is combined with the corresponding emergency overflow. The emergency overflow is available in three versions: Geberit Pluvia emergency overflow for 12 l roof outlets Geberit Pluvia emergency overflow for 19 l roof outlets Geberit Pluvia emergency overflow for 25 l roof outlets Geberit Pluvia 12 l emergency overflow The Geberit Pluvia 12 l emergency overflow consists of the following components: Figure 10: Components of the Geberit Pluvia 12 l emergency overflow Rotating lock bar 2 Overflow section 3 Lip seal Functional principle of the 12 l emergency overflow The water is transported away through the Geberit Pluvia 12 l roof outlet to a head of water of max. 40 mm through the roof drainage system. When the head of water exceeds 55 mm, the emergency overflow goes into action. The roof drainage and emergency overflow systems reach their maximum output of 24 l/s together at a head of water of 80 mm. 40 mm 0 mm 12 l/s 0 l/s 80 mm 55 mm 0 mm 12 l/s 0-12 l/s Figure 11: Functional principle of the Geberit Pluvia 12 l emergency overflow The heads of water must be taken into account in the structural design of roofs and gutters

15 1 Product data 1.1 System description Geberit Pluvia 19 l emergency overflow The Geberit Pluvia 19 l emergency overflow consists of the following components: Geberit Pluvia 25 l emergency overflow The Geberit Pluvia 25 l emergency overflow consists of the following components: 1 1 Figure 12: Components of the Geberit Pluvia 19 l emergency overflow 1 Rotary latching slider 2 Overflow section 3 Lip seal Functional principle of the 19 l emergency overflow The water is transported away through the Geberit Pluvia 19 l roof outlet to a head of water of max. 55 mm through the roof drainage system. When the head of water exceeds 55 mm, the emergency overflow goes into action. The roof drainage and emergency overflow systems reach their maximum output of 38 l/s together at a head of water of 70 mm. 55 mm 0 mm 2 3 Figure 14: Components of the Geberit Pluvia 25 l emergency overflow 1 Rotating lock bar 2 Overflow section 3 Lip seal Functional principle of the 25 l emergency overflow The water is transported away through the Geberit Pluvia 25 l roof outlet to a head of water of max. 50 mm through the roof drainage system. When the head of water exceeds 65 mm, the emergency overflow goes into action. The roof drainage and emergency overflow systems reach their maximum output of 50 l/s together at a head of water of 95 mm mm 0 mm 19 l/s 0 l/s 70 mm 55 mm 0 mm 25 l/s 0 l/s 95 mm 65 mm 0 mm 19 l/s 0 19 l/s Figure 13: Functional principle of the Geberit Pluvia 19 l emergency overflow The heads of water must be taken into account in the structural design of roofs and gutters. 25 l/s 0 25 l/s Figure 15: Functional principle of the Geberit Pluvia 25 l emergency overflow The heads of water must be taken into account in the structural design of roofs and gutters

16 1 Product data 1.1 System description Geberit HDPE piping system The Geberit HDPE piping system consists of: Pipes d Fittings Joints (electrofusion sleeve couplings, electrofusion couplings with integrated thermal fuses) Adapters for other piping systems Figure 16: Geberit HDPE piping system Geberit HDPE pipes and fittings can be connected to each other by various methods, such as electrofusion welding, butt welding or mechanical connection. The material properties of Geberit HDPE make it possible to prefabricate the components of the piping system so that it can be mounted on-site as it is. In this way, sections can be prefabricated in a safe, clean environment. The prefabrication makes it possible to mount Geberit Pluvia more safely and more easily. This saves product material and working time, which minimises the installation costs. The following tables show which Geberit HDPE fittings are suitable for the Geberit Pluvia roof drainage system. Table 1: Geberit HDPE pipes and fittings Suitable for Geberit Pluvia Pipe For pipe dimensions of d200 and larger, Geberit HDPE pipes PN4 must be used for negative pressures of over 450 mbar Bend 45 Bend 90 Only as connection bend on the roof outlet Bend 90 with narrow radius Connection bend 88.5 Branch fitting

17 1 Product data 1.1 System description Suitable for Geberit Pluvia Branchball Reducer For horizontal pipes, use the eccentric reducers. Install even with the upper side of the pipe. Table 2: Geberit HDPE connection types Connection type Designation Suitable for Geberit Pluvia Welding joint Butt welding Electrofusion welding Flange connection Flange connection Plug connection Vertical expansion socket Horizontal expansion socket Ring seal socket Only for pipe dimensions up to d110 The GeberitSilent-db20 piping system must not be used for systems with the Geberit Pluvia roof drainage system

18 1 Product data 1.1 System description Pipe fixation Fastening overview Materials expand when the temperature rises. They shrink during cooling. The expansion or shrinkage caused by temperature differentials depends on the material and is specified by the coefficient of linear expansion α [mm/m K]. Example: 30 C 80 C 0 C 1000 mm 5000 mm 1010 mm 5050 mm 994 mm 4970 mm The coefficient of linear expansion α for Geberit HDPE is 0.2 mm/m K. With Geberit HDPE pipes a temperature differential of ΔT = 50 C causes an expansion of 10 mm per metre. Figure 17: Example of the thermal expansion with Geberit HDPE With Geberit HDPE the thermal expansion Δl can be determined with the following diagram: A temperature differential of ΔT = 30 C causes pipes to shorten by 6 mm per metre. l [m] 100 1m 2m 3m 4m 5m 6m 7m 90 8m 80 9m 70 10m ΔT [ C] Δ l [m] , Figure 18: Diagram for determining thermal expansion with Geberit HDPE Δl ΔT l Linear expansion or shrinkage temperature differential Pipe length

19 1 Product data 1.1 System description Fastening overview Horizontal fastening The fastening system is for fastening the Geberit HDPE pipes horizontally and accommodates their changes in length caused by temperature changes. The shearing forces that occur are transferred through the anchor brackets to the support rail routed parallel to the pipe. L Expansion socket With vertical fastening, the change in length is accommodated by the expansion socket. The thermally caused change in length of the piping system must be controlled by the pipe fixation with anchor points and sliding points. Vertical fastening We advise against rigid installation, since the change in length is accommodated by the anchor point and is directly transferred to the building. L Rigid installation Supports The supports provide additional support for the Geberit Pluvia fastening system in the event of unfavourable framework conditions such as turbulence, pressure changes or stalls

20 1 Product data 1.1 System description Anchor and sliding points The thermally caused change in length of the piping system must be controlled by the pipe fixation with anchor points and sliding points. Anchor points counteract the forces of the thermally caused change in length and thereby control the linear expansion of the pipeline in a defined direction. Sliding points prevent the pipe from veering to the side during thermally caused changes in length and support the weight of the water-filled pipeline. With fastening using the Geberit Pluvia fastening system, the thermally caused change in length is accommodated by the support rail or the expansion socket. For this reason, Geberit recommends pipe fixation with an expansion socket in the case of a vertical pipe layout and with the Geberit Pluvia fastening system in the case of a horizontal pipe layout. We advise against rigid installation, since the change in length is accommodated by the anchor point and is directly transferred to the building. Table 3: Configuration of anchor and sliding points Type of fastening Anchor point Sliding point Pipe bracket with electrofusion tape Pipe bracket GEBERIT Horizontal on ceilings Expansion socket Pipe bracket Vertical on walls L Pipe bracket with electrofusion tape L L Pipe bracket L

21 1 Product data 1.1 System description Geberit ProPlanner Software The Geberit Pluvia is used optimally when the piping system fills quickly and all pipe sections empty evenly. The piping system therefore has to be precisely dimensioned. The dimensioning depends on: rainfall size of the roof area roof structure pipe layout With Geberit ProPlanner, this data can be recorded and even complex roof projects can be easily calculated. Geberit ProPlanner creates: Isometric drawings Hydraulic calculations Material lists for pipe systems and fastening elements Cost calculations with tender documents ready for shipment

22 2 Planning 2.1 Planning rules 2 Planning 2.1 Planning rules When planning a roof drainage system with Geberit Pluvia, the country-specific regulations for creating roof drainage of buildings must be observed. Increased roof loads, flagging, backpressure from rainwater and snow loads must be especially observed on flat roofs. With lightweight roofs in particular, the bearing capacity must be checked. The construction engineer and architect must be informed of the expected static load of the building structure. 2.2 Roof structure The most important roof types for large roof areas are the flat roof and sawtooth roof with valley gutters Roofs with vapour barrier The vapour barrier must be planned and connected according to the country-specific regulations. Moisture from inside the building structure must not penetrate the overlying thermal insulation. For roofs with a vapour barrier, a vapour barrier connection must be used in addition to the roof outlet. Figure 19: Flat roof Roofs suitable for promenade or parking decks 1.30 m Figure 21: Gravel bed Figure 20: Sawtooth roof with valley gutter Both roof types are available in different designs, e.g.: Uninsulated Insulated Insulated, with vapour barrier Suitable for promenade or parking decks Green roof Only plastic-bonded tiles must be used. Geberit Pluvia roof outlets must be protected against caking in roof structures with flagging. When using tiles containing cement, it is important to create a raised gravel bed measuring at least 1.30 m x 1.30 m around the outlet (gravel fraction = mm)

23 2 Planning 2.2 Roof structure Solid roof Uninsulated With roof foil Figure 22: Solid roof construction, uninsulated, with roof foil 1 Outlet grating with function disc 2 Slope cover/screed 3 Roof foil 4 Geberit Pluvia anti-condensation insulation 5 Concrete floor 6 Straight connector of the roof outlet 7 Tension resistant connection Anti-condensation insulation (on-site) 9 Connection pipe With bitumen roof foil, suitable for promenade decks With bitumen roof foil, suitable for parking decks Figure 24: Solid roof construction, uninsulated, with bitumen roof foil, suitable for parking decks 1 Grating (from ) 2 Duct pipe (from ) 3 Bitumen covering 4 Asphalt covering 5 Bitumen roof foil (at least two layers) 6 Outlet grating with function disc 7 Geberit Pluvia anti-condensation insulation 8 Concrete floor 9 Straight connector of the roof outlet 10 Tension resistant connection 11 Anti-condensation insulation (on-site) 12 Connection pipe Figure 23: Solid roof construction, uninsulated, with bitumen roof foil, suitable for promenade decks 1 Outlet grating with function disc 2 Gravel bed 3 Flagstones in the area of the roof outlet 4 Thermal insulation 5 Bitumen roof foil (at least two layers) 6 Geberit Pluvia anti-condensation insulation 7 Concrete floor 8 Straight connector of the roof outlet 9 Tension resistant connection 10 Anti-condensation insulation (on-site) 11 Connection pipe

24 2 Planning 2.2 Roof structure Insulated With roof foil Figure 25: Solid roof construction, insulated, with roof foil 1 Outlet grating with function disc 2 Thermal insulation 3 Roof foil 4 Geberit Pluvia roof outlet 5 Vapour barrier (on-site) 6 Slope cover 7 Straight connector of the roof outlet 8 Tension resistant connection 9 Concrete floor 10 Anti-condensation insulation (on-site) 11 Connection pipe Pipe layout through the vapour barrier must be arranged by the roofer on-site. With bitumen roof foil Figure 26: Solid roof construction, insulated, with bitumen roof foil 1 Outlet grating with function disc 2 Thermal insulation 3 Bitumen roof foil (at least two layers) 4 Anti-condensation insulation 5 Vapour barrier (on-site) 6 Slope cover 7 Straight connector of the roof outlet 8 Tension resistant connection 9 Concrete floor 10 Anti-condensation insulation (on-site) 11 Connection pipe Pipe layout through the vapour barrier must be arranged by the roofer on-site

25 2 Planning 2.2 Roof structure Insulated, with vapour barrier With roof foil and Geberit Pluvia vapour barrier connection With horizontal outlet to the thermal insulation and roof foil Figure 27: Solid roof construction, insulated, with roof foil and vapour barrier 1 Outlet grating with function disc 2 Load layer (gravel) 3 Roof sealing 4 Anti-condensation insulation 5 Thermal insulation 6 Vapour barrier (on-site) 7 Slope cover 8 Geberit Pluvia vapour barrier connection 9 Concrete floor 10 Straight connector of the roof outlet 11 Anti-condensation insulation on-site 12 Tension resistant connection 13 Connection pipe Figure 28: Solid roof construction, insulated, horizontal outlet to thermal insulation, with roof foil and vapour barrier 1 Connection pipe 2 Tension resistant connection 3 Connection bend 4 Outlet grating with function disc 5 Roof foil 6 Geberit Pluvia anti-condensation insulation 7 Thermal insulation 8 Vapour barrier (on-site) 9 Slope cover 10 Concrete floor Pipe layout through the vapour barrier must be arranged by the roofer on-site

26 2 Planning 2.2 Roof structure With roof foil, suitable for parking decks Lightweight roof Uninsulated With roof foil Figure 29: Solid roof construction, insulated, with vapour barrier and roof foil, suitable for parking decks 1 Grating (from ) 2 Duct pipe (from ) 3 Flagstones 4 Gravel bed 5 Vapour barrier 6 Outlet grating with function disc 7 Roof foil 8 Anti-condensation insulation 9 Thermal insulation 10 Straight connector of the roof outlet 11 Vapour barrier (on-site) 12 Slope cover 13 Geberit Pluvia vapour barrier connection 14 Straight connector of the vapour barrier element 15 Concrete floor 16 Tension resistant connection 17 Anti-condensation insulation (on-site) 18 Connection pipe Pipe layout through the vapour barrier must be arranged by the roofer on-site. Figure 30: Lightweight roof construction with roof foil 1 Outlet grating with function disc 2 Roof foil 3 Anti-condensation insulation 4 Lightweight roof 5 Straight connector of the roof outlet 6 Anti-condensation insulation (on-site) 7 Tension resistant connection 8 Connection pipe With bitumen roof foil Figure 31: Lightweight roof construction with Geberit Pluvia contact foil Outlet grating with function disc 2 Bitumen roof foil (at least two layers) 3 Anti-condensation insulation 4 Lightweight roof 5 Straight connector of the roof outlet 6 Anti-condensation insulation (on-site) 7 Tension resistant connection 8 Connection pipe

27 2 Planning 2.2 Roof structure Insulated With roof foil With bitumen roof foil and vapour barrier connection Figure 32: Lightweight roof construction, insulated, with roof foil 1 Outlet grating with function disc 2 Thermal insulation 3 Roof foil 4 Anti-condensation insulation 5 Vapour barrier (on-site) 6 Lightweight roof 7 Straight connector of the roof outlet 8 Tension resistant connection 9 Anti-condensation insulation (on-site) 10 Connection pipe Pipe layout through the vapour barrier must be arranged by the roofer on-site Figure 33: Lightweight roof construction, insulated, with bitumen roof foil 1 Outlet grating with function disc 2 Bitumen roof foil (at least two layers) 3 Anti-condensation insulation 4 Thermal insulation 5 Straight connector of the roof outlet 6 Vapour barrier (on-site) 7 Lightweight roof 8 Geberit Pluvia vapour barrier connection 9 Straight connector of the vapour barrier element 10 Anti-condensation insulation (on-site) 11 Tension resistant connection 12 Connection pipe Pipe layout through the vapour barrier must be arranged by the roofer on-site

28 2 Planning 2.2 Roof structure Insulated, with vapour barrier With roof foil and vapour barrier connection With horizontal outlet to the thermal insulation and roof foil Figure 34: Lightweight roof construction, insulated, with roof foil and vapour barrier connection 1 Outlet grating with function disc 2 Roof foil 3 Anti-condensation insulation 4 Thermal insulation 5 Straight connector of the roof outlet 6 Vapour barrier (on-site) 7 Lightweight roof 8 Geberit Pluvia vapour barrier connection 9 Straight connector of the vapour barrier element 10 Anti-condensation insulation (on-site) 11 Tension resistant connection 12 Connection pipe Figure 35: Lightweight roof construction, insulated, horizontal outlet to thermal insulation, with roof foil and vapour barrier 1 Connection pipe 2 Tension resistant connection 3 Connection bend 4 Outlet grating with function disc 5 Roof foil 6 Anti-condensation insulation 7 Thermal insulation 8 Vapour barrier (on-site) 9 Lightweight roof Pipe layout through the vapour barrier must be arranged by the roofer on-site

29 2 Planning 2.2 Roof structure Gutter Gutters have special requirements for planning and installation. Layout and hydraulic certification must be provided by an architect or sanitary engineer in accordance with the country-specific regulations. Gutters and roof areas must not be drained in a common piping system. The connection material of the roof outlets must be selected so that no corrosive influences occur. It is necessary to check whether an on-site trace heater is required. The trace heater must be modified in accordance with country-specific circumstances Green roofs Flat roofs of new buildings and refurbished old buildings are being increasingly greened. Green roofing yields ecological and structural advantages such as: protection of the sealing (UV protection and mechanical protection) high water retention properties increased sound insulation dust binding The layer structure of a green roof retains precipitation. Essentially, these water retention properties depend on the thickness of the applied substrate layer. The thicker the substrate layer, the higher the water retention. From a drainage and vegetation point of view, we differentiate between intensive and extensive green roofing. The layer thickness and the height of the plant growth are the essential differences. Figure 36: Gutter construction 1 Gutter 2 Geberit Pluvia roof outlet for gutters 3 Straight connector of the roof outlet 4 Tension resistant connection 5 Connection pipe Extensive green roofing Extensive green roofs are forms of vegetation created close to nature that essentially maintain themselves and develop further on their own. They are planted as closed, extensive vegetation groups and allow cost-effective planting of large roofs with low distributed loads and small layer thicknesses. Extensive green roofs are made up of: mosses succulents herbs grasses Plants are used that are specially adapted to the extreme local conditions with a great ability for regeneration. Extensive green roofs are designed without water retention

30 2 Planning 2.2 Roof structure Structure of an extensive green roof Extensive green roof with a layer thickness greater than 10 cm: capacity factor C = 0.3 plant growth height up to 50 cm Extensive green roof with a layer thickness less than 10 cm: capacity factor C = 0.5 plant growth height up to around 20 cm Figure 37: Structure of an extensive green roof Extensive green roof with gravel bed in the area of the roof outlet 2 Gravel bed 3 Outlet grating with function disc 4 Drainage 5 Separating layer 6 Filter mat 7 Roof foil 8 Anti-condensation insulation 9 Thermal insulation 10 Straight connector of the roof outlet 11 Vapour barrier (on-site) 12 Slope cover 13 Geberit Pluvia vapour barrier connection 14 Concrete floor 15 Straight connector of the vapour barrier element 16 Anti-condensation insulation (on-site) 17 Tension resistant connection 18 Connection pipe Intensive green roofing Intensive green roofs include shrubs, woody plants as well as lawns and, in individual cases, even trees. With regard to the possibilities of use and design variety, they are comparable to ground-based green spaces if equipped accordingly. Extensive green roofs are made up of: shrubs woody plants lawns trees, in individual cases The plants used have different demands with regard to layer structure and regular water and nutrient supply. Accordingly, they must be cared for regularly. Intensive green roofs can be designed with or without water retention. A B > 25 > 50 Figure 38: Comparison of an extensive green roof and intensive green roof A B Extensive green roofing Intensive green roofing For both types of green roof, the layer structure generally consists of: a protective layer against mechanical damage and root growth through the roof sealing a drainage layer a filter layer a vegetation layer

31 2 Planning 2.2 Roof structure Structure of an extensive green roof Capacity factor C = 0.3 Plant growth height from 50 cm up to around 10 m Figure 39: Structure of an intensive green roof Planning notices The capacity factor must be specified by the green roofer for green roof areas. Green roofs with a Geberit Pluvia roof drainage system must always be designed with a drainage layer. Use a filter mat to avoid contamination of the roof outlets due to percolating and surface water. After applying green roofing, ensure that roof outlets are freely accessible for maintenance work through manholes with a removable cover. To prevent scaling and caking in roof outlets and pipelines, select surfaces from which only small quantities of carbonate can be dissolved that do not result in caking. A 50 cm wide zone must be kept free from vegetation around the Geberit Pluvia roof outlet (e.g. with a gravel bed). With the Geberit Pluvia roof drainage system, green roof areas must not be drained together with roof areas without green roofing through a common pipe. 1 Outlet grating with function disc 2 Grating (from ) 3 Duct pipe (from ) 4 Intensive green roofing 5 Separating layer 6 Gravel bed 7 Filter mat 8 Roof foil 9 Anti-condensation insulation 10 Thermal insulation 11 Straight connector of the roof outlet 12 Vapour barrier (on-site) 13 Slope cover 14 Geberit Pluvia vapour barrier connection 15 Straight connector of the vapour barrier element 16 Concrete floor 17 Tension resistant connection 18 Anti-condensation insulation (on-site) 19 Connection pipe

32 2 Planning 2.3 Geberit Pluvia roof outlets 2.3 Geberit Pluvia roof outlets Basic rules The possible roof loads of lightweight roofs must be tested. Regardless of the size of the roof area, an emergency overflow system must be present. An anchor point must be provided on the building structure to fasten the connecting pipe of the roof outlet. Per roof area, at least two roof outlets or one roof outlet and one emergency overflow must be provided. 45 l / 60 l / 100 l roof outlets are only for use in regions with extremely high amounts of precipitation. In most countries, it is sufficient to use the 12 l, 19 l or 25 l roof outlets. Valley gutters It is generally possible to use the Geberit Pluvia system for draining gutters. However, there are special requirements for planning and installation. Valley gutters and the hydraulic certification are dimensioned according to the country-specific guidelines and standards. For valley gutters, at least two Geberit Pluvia roof outlets and one emergency overflow must be provided Arrangement of the roof outlets The following rules must be observed when arranging the Geberit Pluvia roof outlets: Roof outlets must be distributed as practically and evenly as possible Arrange roof outlets at the lowest point of a roof area The maximum distance between two roof outlets on the same drainage line must not exceed 20 m To prevent the function of the roof outlets from being impaired, they must be positioned at least 1 m (at most 10 m) away from walls, parapets etc. Flat roofs with parapet In the case of flat roofs with parapets, terraces etc., rainwater can accumulate. For this reason, at least two Geberit Pluvia roof outlets must be planned for each partial roof or terrace area. This makes it possible for water to flow from roof outlet to roof outlet or from Geberit Pluvia roof outlet to emergency overflow Figure 40: Roof outlets and pipe layout for flat roofs with parapet 1 Geberit Pluvia roof outlet and syphonic pipe 2 Partially filled conventional pipe 3 Emergency overflows Figure 41: Roof outlets and pipe layout with valley gutters 1 Geberit Pluvia roof outlet and water-filled pipe 2 Partially filled conventional pipe 3 Emergency overflows The following basic rules must be observed when using Geberit Pluvia in gutters: maximum distance of the roof outlets: 20 m minimum width of gutter 30 cm, (21 cm for 19 l roof outlet) use only in square gutters; no transverse slopes Application range Geberit Pluvia roof outlets are suitable for all flat roofs. They can also be used as gutters or emergency overflows. They are predominantly used on roofs of industrial and commercial buildings with an area larger than 1000 m 2, such as: factories storage halls shopping centres airports hotels sports centres Depending on the roof structure, different Geberit Pluvia roof outlets are used

33 2 Planning 2.3 Geberit Pluvia roof outlets Geberit Pluvia 9 l and 12 l roof outlets Table 4: Application ranges of Geberit Pluvia 9 l and 12 l roof outlets Accessories Roof foils Bitumen Gutters Solid roof Uninsulated Uninsulated, outlet in structure Uninsulated, suitable for promenade decks Uninsulated, suitable for parking decks Insulated Insulated, outlet in insulation Insulated, vapour barrier connection

34 2 Planning 2.3 Geberit Pluvia roof outlets Accessories Roof foils Bitumen Gutters Insulated, extensive green roof, vapour barrier connection Insulated, intensive green roof, vapour barrier connection Insulated, suitable for promenade decks, vapour barrier connection Insulated, suitable for parking decks, vapour barrier connection Lightweight roof * Uninsulated * * Insulated Insulated, outlet in insulation Insulated, vapour barrier connection

35 2 Planning 2.3 Geberit Pluvia roof outlets Accessories Roof foils Bitumen Gutters Gutter Gutter Suitable Not suitable * Accessory is only suitable for roof outlets and In regions with danger of frost the Geberit Pluvia roof outlets 9 l and 12 l can be optionally supplemented with a Geberit heating element ( )

36 2 Planning 2.3 Geberit Pluvia roof outlets Geberit Pluvia 19 l and 25 l roof outlets Table 5: Application ranges of Geberit Pluvia 19 l and 25 l roof outlets 25 l 25 l 25 l 19 l Accessories Fastening flange for roof foils Contact sheet Universal Connection for gutters Solid roof Uninsulated Insulated, vapour barrier connection Uninsulated, suitable for promenade decks Uninsulated, suitable for parking decks Insulated, extensive green roof, vapour barrier connection Insulated, intensive green roof, vapour barrier connection

37 2 Planning 2.3 Geberit Pluvia roof outlets 25 l 25 l 25 l 19 l Accessories Fastening flange for roof foils Contact sheet Universal Connection for gutters Insulated, suitable for promenade decks, vapour barrier connection Insulated, suitable for parking decks, vapour barrier connection Lightweight roof * Uninsulated * Insulated, vapour barrier connection Gutter Gutter Suitable Not suitable * Accessory , suitable for roof outlets only In regions with danger of frost the Geberit Pluvia roof outlets 19 l and 25 l can be optionally supplemented with a Geberit heating element ( )

38 2 Planning 2.3 Geberit Pluvia roof outlets Geberit Pluvia 45 l, 60 l and 100 l roof outlets Table 6: Application ranges of Geberit Pluvia 45 l, 60 l and 100 l roof outlets 45 l 60 l 100 l 45 l 60 l 100 l Contact sheet Universal Contact seam for gutters Solid roof Uninsulated Uninsulated, suitable for promenade decks + Duct construction on-site + Duct construction on-site + Duct construction on-site Uninsulated, suitable for parking decks + Duct construction on-site + Duct construction on-site + Duct construction on-site Insulated Lightweight roof Uninsulated Insulated Gutter Gutter Suitable Not suitable Geberit Pluvia 45 l roof outlets can be supplemented with heating strip For Geberit Pluvia 60 l and 100 l roof outlets, the Geberit Pluvia 230 V / 11.2 W heating strip is too short. For these, you must resort to products from other manufacturers

39 2 Planning 2.4 Pipe layout 2.4 Pipe layout Basic rules The maximum negative pressure in the piping system is: d = -800 mbar d = -450 mbar d Geberit HDPE pipes PN4 = -800 mbar For this reason, only a welded piping system made of Geberit HDPE may be used. Fitted connections or clamping connectors (e.g. CV clamping connectors) are not permitted. Horizontal pipes must be laid without slopes. Foreign water, e.g. condensed water, must not be channelled into the Geberit Pluvia roof drainage system Connections and reducers Connection of the Geberit Pluvia roof outlets The Geberit Pluvia roof outlets can be directly connected to the piping system with a 90 bend. Geberit Pluvia 12 l, 19 l and 25 l roof outlets can also be connected with a reducer or an expander. Direct reduction or expansion of the Geberit Pluvia 45 l/60 l/100 l roof outlets, on the other hand, is not possible Separate pipe layout Figure 43: Connecting the Geberit Pluvia roof outlet with a 90 bend Figure 42: Separate pipe layout Roof areas must be drained separately in the event of: different capacity factors areas > 5000 m 2 a height difference > 4 m Two roof areas with a height difference up to 4 m from each other can be drained together if the risk of overflow from the upper roof to the lower roof can be excluded. Exclusively Geberit Pluvia 12 l and 25 l roof outlets may be used for this application. All following 90 changes in direction in the Geberit Pluvia piping system may only be made with two 45 bends. If the Geberit Pluvia roof outlet is connected to the piping system with a reducer, the following minimum dimensions must be observed: Geberit Pluvia 12 l roof outlets that can be reduced up to a maximum of d40 Geberit Pluvia 19 l roof outlets that can be reduced up to a maximum of d56 Geberit Pluvia 25 roof outlets that can be reduced up to a maximum of d

40 2 Planning 2.4 Pipe layout Reducers For Geberit Pluvia, both concentric and eccentric reducers can be used. 1 2 Figure 46: Eccentric and concentric reducer 1 Eccentric reducer 2 Concentric reducer Figure 44: Connecting the Geberit Pluvia roof outlet with a reducer If the Geberit Pluvia roof outlet is connected to the piping system with an expander, the following maximum dimensions must be observed: Geberit Pluvia 12 l roof outlets that can be expanded up to a maximum of d75 Geberit Pluvia 19 roof outlets that can be expanded up to a maximum of d110 Geberit Pluvia 25 l roof outlets that can be expanded up to a maximum of d110 To achieve an optimal rainwater flow, reducers should be used as follows: Concentric reducers with a vertical pipe Eccentric reducers with a horizontal pipe Figure 47: Concentric reducer with a vertical pipe Figure 48: Eccentric reducer with a horizontal pipe When fastening with the Geberit Pluvia fastening system, the eccentric reducers must be installed even with the upper side of the pipe for a horizontal pipe. Figure 45: Connecting the Geberit Pluvia roof outlet with an expander

41 2 Planning 2.4 Pipe layout Transition to conventional system The Geberit Pluvia roof drainage system ends at a defined point. From this point on, the piping system must be conventionally dimensioned. The local drainage regulations serve as the basis for this. This point is also the transition from the roof drainage system with complete filling (Geberit Pluvia) to the roof drainage system with partial filling (conventional roof drainage system). For this purpose, it is necessary to expand the piping system. The expansion is achieved using a reducer. A B Figure 51: Expansion after a manhole is allowed A Geberit Pluvia (complete filling) B Conventional roof drainage system (partial filling) A B A B Figure 52: Expansion up to before the sewage system Figure 49: Expansion using a reducer A B Geberit Pluvia (complete filling) Conventional roof drainage system (partial filling) Expansion through release into a manhole is also possible when the inlet and outlet are opposite of each other. A B Geberit Pluvia roof drainage system Conventional drainage of at least 2 m length as a transition section before the sewage system If the GeberitPluvia roof drainage system is drained into receiving waters, the connection up to the receiving water must be executed so that ice does not form at the outlet. A B A Figure 50: Expansion through release into a manhole A B Geberit Pluvia (complete filling) Conventional roof drainage system (partial filling) If the transition to the conventional drainage system is located after the manhole, the pipe must be closed in the manhole. Pipes connected to Geberit Pluvia roof outlets must be continuous. They must not be interrupted (e.g. by a manhole). Figure 53: Expansion up to the receiving waters A Geberit Pluvia roof drainage system When dimensioning the pipe, the country-specific standards and regulations must be taken into account for the transition to a conventional drainage system

42 2 Planning 2.4 Pipe layout Frost protection For non heat-insulated roofs and above all for projecting roofs, frost protection measures are a good idea since parts of the piping can freeze. In these cases, the area of the roof outlet as well as gutters should be protected with a self-regulating trace heater. Make sure that the trace heater is mounted outside and the discharge capacity of the roof outlet is not reduced. The trace heater must be dimensioned so that the Geberit Pluvia system remains free of ice during thaw periods. Continuous operation of the trace heater must be avoided Protection against hail damage In areas subject to hailstorms, Geberit recommends protecting the Pluvia roof outlet. Flat roof construction On flat roofs, a grating (hole size approx. 8 x 20 mm) can be installed in the area of the roof outlet. Installation and use must be done according to the manufacturer's information on the respective trace heater Moisture protection If there are differences in temperature between the roof drainage pipe, roof structure and environment, condensation can form on the pipeline. To prevent condensation, the roof drainage pipes must be equipped with anti-condensation insulation. Figure 54: Grating for Geberit Pluvia roof outlet Valley gutter construction Valley gutters can be covered with a grating (hole size approx. 8 x 20 mm) along the entire length of the gutter. Figure 55: Grating for gutter

43 2 Planning 2.4 Pipe layout Sound insulation As a result of the high flow speed in the piping system, the sound pressure level of Geberit Pluvia is higher than with conventional roof drainage systems. In buildings without sound insulation requirements, Geberit Pluvia can be used without restrictions. In buildings with acoustic insulation requirements, an acoustically optimised pipe layout is achieved by: preventing sound transmission to the building structure (acoustic insulation) optimum placement of roof outlets and pipelines To prevent the transmission of structure-borne sound, sound decoupling must be provided at the contact points of the building structure and the piping system. To prevent the spreading of airborne sound, installation in acoustically optimised installation ducts and/or insulation with Geberit Isol is possible. When the Geberit Pluvia roof drainage system is used in buildings with acoustic insulation requirements, a building acoustic engineer should be consulted. A combined acoustic insulation and moisture prevention can be attained with Geberit Isol lead-free. In addition to the use as a sound insulation mat, Geberit Isol lead-free is also suitable as anti-condensation insulation in rooms that are subject to normal use. The following environmental data is taken into account: temperature of the rainwater: 0 C room temperature < 25 C humidity < 60 % For other environmental data or applications, combined solutions with additional cold insulation (e.g. Armaflex) must be provided. Table 7: Insulation of rainwater pipes (rainwater 0 C, room temperature < 25 C, humidity < 60 %) Pipe dimension Anti-condensation, solid-borne sound and airborne sound insulation Anti-condensation and solid-borne sound insulation DN d [mm] Sound insulation mat 1) Geberit Isol lead-free s = 17 mm Art. no. Sound insulation mat 1) Geberit Isol inherently stable s = 17 mm Art. no. Armaflex AF 2) Armaflex AF 2) s = 13 mm Art. no. s = 13 mm Art. no H x H x H x H x H x H x H x H-113/ x 140 1) 2) All joints must be taped off Source: Insulating material trade. Equivalent products can also be used

44 2 Planning 2.5 Pipe fixation 2.5 Pipe fixation Rigid installation: Geberit Pluvia fastening system The fastening system consists of: fasteners with a square profile for pipes d pipe brackets support rails fasteners with a C-profile for pipes d pipe brackets support rails fasteners on the building with mounting plates The square profiles may only be used with pipe brackets for square profiles and the C-profiles only with pipe brackets for C-profiles. When fastening to the building, the required materials (screws, dowels, console brackets, etc.) must be clarified by the builders. Table 8: Components of the Geberit Pluvia fastening system depending on the pipe dimension Pipe bracket Fastening system d [mm] Sliding point Anchor point Support rail Connection element Suspension element Tension wedge Threaded rod and mounting plate x Mounting plate 1)

45 2 Planning 2.5 Pipe fixation Distances must be observed and anchor points attached when planning and installing anchor and sliding points. Positioning of the anchor points: at the beginning and end of each pipe run at each change in direction of the pipeline at each branch fitting (both main pipe and branching pipe) at each reducer, on the side with the larger dimension on straight sections after every 5 m A A A AA = 2.5 m FG A G F RA G RA A F FG G G RA RA FA = 5 m A F RA G F F Figure 56: Fastening distances for Geberit Pluvia fastening systems without support shells A Suspension (threaded socket M10) F Anchor point G Sliding point AA Distance between suspensions RA Distance between pipe brackets FA Distance between anchor points FG Weight of the syphonic system on the suspension RA F F Figure 57: Application with single interruption of the Geberit Pluvia support rail RA F Distance between pipe brackets Anchor point

46 GEBERIT 2 Planning 2.5 Pipe fixation Geberit Pluvia d fastening system For horizontal fastening with the Geberit Pluvia fastening system, anchor and sliding points are created as follows: Table 9: Configuration of anchor and sliding points with the Geberit Pluvia fastening system Anchor point Sliding point Suspension Geberit Pluvia pipe bracket with electrofusion tape Geberit Pluvia pipe bracket Table 10: Fastening distances of fixed and sliding brackets for rigid installation d [mm] RA [m] FG 1) [N] FA [m] AA [m] ) With fastening material FG F AA AA AA G G F G RA RA RA FA RA RA Figure 58: Fastening distances for Geberit Pluvia d fastening system A Suspension (threaded socket M10) F Anchor point G Sliding point AA Distance between suspensions RA Distance between pipe brackets FA Distance between anchor points FG Weight for each Geberit Pluvia suspension for a distance of 2.5 m

47 2 Planning 2.5 Pipe fixation Geberit Pluvia fastening system d For horizontal fastening with the Geberit Pluvia fastening system, anchor and sliding points are created as follows: Table 11: Configuration of anchor and sliding points with the Geberit Pluvia fasteing system Anchor point Sliding point Suspension Geberit Pluvia pipe bracket with electrofusion tape Geberit Pluvia pipe bracket Table 12: Fastening distances of fixed and sliding brackets for rigid installation d [mm] 1) RA [m] FG 1) [N] FA [m] AA [m] With fastening material Ø 250 FG 225 AA AA AA AA F RA ø 250 mm G G F G G RA RA RA RA FA FA Ø 315 FG 26 AA AA AA AA ø 315 mm F 0,2 m G G F 0,2 m G G RA RA RA RA RA FA FA Figure 59: Fastening distances for Geberit Pluvia d fastening system F G AA RA FA FG Anchor point Sliding point Distance of the suspensions Distance between pipe brackets Distance between anchor points Weight for each Geberit Pluvia suspension for a distance of 2.5 m For pipes d315, all anchor points must be created with 2 pipe brackets with electrofusion tape. The distance between the two pipe brackets is 0.2 m. For the transition from d200 to d250 or d315, the support rails cannot be connected to each other, since their distance from the pipe centre differs by 10 mm. ø 250/315 mm +/- 0-1 ø 200 mm F F Figure 61: Non-connectable support rails F Anchor point Figure 60: Geberit Pluvia pipe bracket with coupling M16 and electrofusion tape

48 2 Planning 2.5 Pipe fixation Vertical fastening with expansion socket In the case of vertical fastening with an expansion socket, anchor and sliding points are created as follows: Table 13: Configuration of anchor and sliding points with expansion socket Anchor point Sliding point d d Pipe bracket with expansion socket with double flange Pipe bracket with expansion socket without double flange Pipe bracket with electrofusion tape Pipe bracket L L L The diameter of the threaded rods depends on the distance L of the expansion socket or the pipe from the wall. The following tables indicate the diameters of the threaded rods for anchor and sliding points. Table 14: Fixed bracket configuration on walls conventional rigid installation Ceiling spacing L [cm] DN 40/50 d40/50 DN 56 d56 DN 60 d63 DN 70 d75 DN 90 d90 DN 100 d110 DN 125 d125 DN 150 d160 DN 200 d200 DN 250 d250 DN 300 d /2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 20 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 3/4" 3/4" 1" 5/4" 5/4" 30 1/2" 1/2" 1/2" 1/2" 1/2" 3/4" 3/4" 1" 5/4" 5/4" 1 1/2" 40 1/2" 1/2" 1/2" 1/2" 3/4" 3/4" 1" 1" 5/4" 1 1/2" 2" 50 1/2" 1/2" 1/2" 3/4" 3/4" 1" 1" 5/4" 1 1/2" 2" 2" 60 1/2" 3/4" 3/4" 3/4" 3/4" 1" 1" 5/4" 1 1/2" 2" Table 15: Vertical fastening with expansion socket: diameter of the threaded rods with sliding points Ceiling spacing L [cm] DN 40/50 d40/50 DN 56 d56 DN 60 d63 DN 70 d75 DN 90 d90 DN 100 d110 DN 125 d125 DN 150 d160 DN 200 d200 DN 250 d250 DN 300 d M10 M10 M10 M10 M10 M10 M10 20 M10 M10 M10 M10 M10 M10 1/2" 1/2" 1" 1" 1" 30 M10 M10 M10 M10 M10 1/2" 1/2" 1/2" 1" 1" 1" 40 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1" 1" 1" 50 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1" 1" 1" 60 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1" 1" 1" In the case of vertical fastening with an expansion socket, the following points must be taken into account: Each expansion socket with anchor point must be assigned a pipe length of max. 6 m An anchor point with electrofusion sleeve coupling or electrofusion tape must be placed directly before or after horizontal pipe sections Commercially available products can be used to create the anchor points

49 2 Planning 2.5 Pipe fixation Insertion depth of Geberit HDPE expansion sockets Anchor and sliding points for fastening on the wall The insertion depth depends on the installation temperature. With an installation temperature of 20 C the insertion depth is 10.5 cm, with 0 C only 8 cm. (For pipe dimension mm) F RA 20 C 105 G RA 20 0 G 6.0 m 6 m RA Figure 62: Insertion depth for an installation temperature of 20 C 0 C 8 G F RA m Figure 63: Insertion depth for an installation temperature of 0 C Table 16: Insertion depth depending on the installation temperature Ø [mm] -10 C 0 C +10 C Insertion depth [mm] +20 C +30 C +40 C +50 C , Figure 64: Configuration of anchor and sliding points for fastening on the wall G F RA Sliding point Anchor point Maximum distance between two pipe brackets Table 17: Fastening distances when fastening on the wall Ø [mm] DN [mm] RA [m]

50 2 Planning 2.5 Pipe fixation Conventional rigid installation Pipe laying with conventional rigid installation: can be used for horizontal and vertical pipes recommended up to DN 125 (d125) expansion forces that result from thermally caused changes in length are transferred to the building structure specific force transmission is accommodated at the anchor points Anchor and sliding points: Conventional rigid installation is not recommended for fastening Geberit Pluvia roof drainage systems. If no other type of fastening is possible, anchor and sliding points should be configured as follows: Table 18: Configuration of anchor and sliding points for rigid mounting Anchor point Sliding point Pipe bracket with electrofusion sleeve coupling Pipe bracket with electrofusion tape Pipe bracket Horizontal on ceilings L L L Pipe bracket with electrofusion sleeve coupling L Pipe bracket with electrofusion tape L Pipe bracket Vertical on walls L The diameter of the threaded rods depends on the distance L of the pipe from the wall. The following tables indicate the diameters of the threaded rods for anchor points

51 2 Planning 2.5 Pipe fixation Table 19: Fixed bracket configuration on ceilings conventional rigid installation Ceiling spacing L [cm] DN 40 d40 DN 50 d50 DN 56 d56 DN 60 d60 DN 70 d70 DN 90 d90 DN 100 d100 DN 125 d /4" 1" 1" 1" 1" 1 1/4" 1 1/2" 2" /4" 1 1/4" 1 1/4" 1 1/2" 1 1/2" 2" /4" 1 1/2" 1 1/2" 2" 2" /2" 2" 2" 2" 2" 50 2" 2" 2" 60 2" 2" Table 20: Fixed bracket configuration on walls conventional rigid installation Wall spacing L [cm] DN 40 d40 DN 50 d50 DN 56 d56 DN 60 d60 DN 70 d70 DN 90 d90 DN 100 d100 DN 125 d /2" 1/2" 1/2" 3/4" 3/4" 1" 1" 1 1/4" 20 3/4" 3/4" 1" 1" 1" 1 1/4" 1 1/4" 1 1/2" 30 1" 1" 1" 1" 1 1/4" 1 1/4" 2" 2" 40 1" 1" 1 1/4" 1 1/4" 1 1/4" 1 1/2" 2" 50 1" 1 1/4" 1 1/4" 1 1/4" 1 1/2" 2" 2" /4" 1 1/4" 1 1/2" 1 1/2" 1 1/2" 2" Commercially available products can be used to create the anchor points. Special solution for Geberit Pluvia This special solution is provided for Pluvia projects where the Pluvia fastening system cannot be used because the distance to the wall or ceiling is not sufficient. Table 21: Thickness of the threaded rods for anchor and sliding points on walls and ceilings Wall or ceiling distance L [cm] DN 40 d40 DN 50 d50 DN 56 d56 DN 60 d63 DN 70 d75 DN 90 d90 DN 100 d50 DN 125 d50 DN 150 d /2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" The following rules apply to the special solution: The pipes are in a zone with constant temperatures Outdoor installations (exposed to sunshine) are excluded from this application If there are any doubts as to whether this special solution can be used, use the values from the Fixed bracket configuration, conventional rigid installation tables

52 2 Planning 2.5 Pipe fixation Fastening distances for conventional rigid installation Anchor points must be attached: at the beginning and end of each pipe run and at each change in direction at each branch fitting (both main pipe and branching pipe) at each reducer, on the side with the larger dimension The following fastening distances and dimensions must be observed: F G G G G F F F RA RA RA RA G F G F RA G F RA G G F RA Sliding point (minimum 1/2" pipe bracket) Anchor point Distance between pipe brackets Table 22: Fastening distances on ceilings and walls d [mm] Pipe dimension DN RA [m]

53 2 Planning 2.5 Pipe fixation Forces generated in Geberit HDPE pipes with rigid installation Much greater forces are generated during cooling than during heating. Under normal conditions, the values in column 1 can be used. The fastening is to be calculated based on the values in column 2 for pipelines that are laid outdoors, e.g. when constructing bridges. For rigid installation, pipe brackets are to be used with struts that are appropriately supported by the building structure in accordance with the calculated forces. In such cases, ensure that the fastening screws can withstand the generated forces. Table 23: Forces generated in Geberit HDPE pipes ø [mm] Annular profile [cm 2 ] Expansion force in [N] +20 C +90 C -20 C +20 C Column 1 Column

54 2 Planning 2.5 Pipe fixation Supports for Geberit Pluvia fastening system The supports provide additional support to the Geberit Pluvia fastening system in the event of unfavourable framework conditions. Unfavourable framework conditions are, for example, turbulence, pressure changes or stalls. In order to avoid mechanical malfunctions caused by unfavourable framework conditions, supports are used for: pipe deflections large pipe dimensions from ø = 75 cm suspensions pipes d75: suspended by more than 100 cm pipes d90: suspended by more than 60 cm very long, straight pipe runs > 10 m Figure 65: Supports The supports consist of: support brackets d (pipe brackets with articulated joints) struts (1/2" threaded rods) fasteners on the building (mounting plates) The struts are not included in the product range. They must be procured separately. The supports can be subsequently mounted on Geberit Pluvia roof drainage systems. The following table shows how the components of the supports are used depending on the pipe dimension. Table 24: Components of the supports depending on the pipe dimension d [mm] Support brackets Threaded rod Mounting plate / To be procured separately 1/2" M10 250/

55 2 Planning 2.5 Pipe fixation Determining the spacing and number of supports The spacing and number of supports are determined based on the length of the pipe sections: for pipe sections with a length of less than 3 m no support is necessary for pipe sections with a length of more than 3 m a support must be provided on the side of the longer pipe section after each change in direction for pipe sections with a length of more than 10 m supports are placed at defined positions in the pipe section (see following table) Table 25: Positions of the supports for pipe sections over 10 m L [m] P 1 [m] P 2 [m] P 3 [m] P 4 [m] P 5 [m] P 6 [m] P 7 [m] L x 0.0 L x 0.5 L x L x 0.0 L x 0.33 L x 0.67 L x 1.0 > 40 L x 0.0 L x 0.13 L x 0.33 L x 0.5 L x 0.67 L x 0.87 L x 1.0 L P n Length of the pipe section Position of the support bracket within a pipe section A 7 A 6 A5 A 4 A A 3 A 2 A1 G B Figure 66: Positioning and number of supports for a piping system with two pipe sections A n B G Position of the supports in pipe section A, L > 10 m Pipe section L 3 m, without supports Anchor point

56 2 Planning 2.5 Pipe fixation A7 A6 A A5 A4 A3 C4 C C3 C2 A2 A1 B2 F1 B1 C1 B F E D G Figure 67: Positioning and number of supports for a piping system with several pipe sections A n B n C n D E F n G Position of the supports in pipe section A Position of the supports in pipe section B Position of the supports in pipe section C Pipe section L 3 m, without supports Pipe section L = 3 10 m, without change in direction Position of the supports in pipe section F Anchor point In continuous sections of more than 3 m, no support bracket is needed in the deflection zone. In the example above, support bracket B 3 is not needed in pipe section B as a result of the positioning of support bracket A 1. Furthermore, no support bracket is needed in pipe section E due to support bracket F 1. The number and position of the Geberit Pluvia support brackets in a piping system can be determined with the Geberit ProPlanner planning software

57 2 Planning 2.5 Pipe fixation Additional material for Geberit Pluvia support brackets The following additional material is required to fasten the Geberit Pluvia support brackets d to the support rail: Designation Quantity per set Remarks Geberit Pluvia tension wedge art. no For the Geberit Pluvia support brackets d75 315, the following additional material is needed to manufacture the struts: Designation Quantity per set Remarks Threaded rod 1/2" 3 For struts on the building structure Mounting plate with threaded joint M10, minimum load 2 kn Standard commercial profile hangers with threaded socket M For fastening to the building structure with solid roofs For fastening to the building structure with lightweight roofs In comparison to subsequent installation, material can be saved by installing the supports immediately during installation of the Geberit Pluvia roof drainage system. The sliding bracket of the standard fastening system is not necessary at the points of the pipe at which supports are provided

58 2 Planning 2.6 Dimensioning 2.6 Dimensioning A Geberit Pluvia roof drainage system is dimensioned using the Roof drainage module in Geberit ProPlanner. The following parameters must be determined: number and position of the roof outlets building height pipe layout collector pipes stacks transition to conventional drainage system rainwater outflow (target volumetric flow rate) Rules and dimensions that must be observed when the Geberit Pluvia roof outlets are arranged are described in section "Geberit Pluvia roof outlets", page 30. Rules and dimensions that must be observed when the pipes are laid are described in Pipe layout. If changes are made to the roof area, building height, pipe layout or number of roof outlets, the system must be recalculated by Geberit Determining the rainwater outflow The rainwater outflow is the amount of water that is fed to the rainwater pipes per second. The capacity factor depends on the roof structure and indicates what share of the calculated rainfall is actually discharged, e.g.: foil and tin roofs (roofs with sealing) C = 1.0 gravel roofs C = 0.8 according to manufacturer's information Table 26: Capacity factors for greened roof areas Layer thickness Capacity factors C Pitch up to 15 Pitch over 15 > 50 cm 0.1 > cm 0.2 > cm 0.3 > cm > 6-10 cm > 4-6 cm > 2 4 cm The indicated capacity factors have been taken from the guidelines of the Landscape Development and Landscaping Research Society e.v. (Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau e.v.) Dimensioning with the roof drainage module in the Geberit ProPlanner A The rainwater outflow is calculated with the following formula: Q R Q R = r A C Rainwater outflow [l/s] A Horizontal projection of the roof area [m 2 ] r Rainfall [l/s m 2 ] C Capacity factor If the value for the rainfall is not known, it must be determined with the architect, sanitary engineer and possibly the building insurer. This value is based on the rainfall statistics from the local meteorological institute. The average rainfall per 10 minutes within ten years is recommended. If the number and positions of the roof outlets, the pipe layout and the rainwater outflow are known, the Geberit Pluvia can be dimensioned using the Geberit ProPlanner. The dimensioning is done roughly as follows: Create the piping system in isometric view. Set the underground pipe connection. Draw the pipes. Set the roof outlets. Enter the pipe lengths and rainwater outflow. Calculate the dimensions of the piping system Safety factor Considering the safety factor for Geberit Pluvia leads to an undesirable overdimensioning, which can lead to malfunctions in the drainage capacity and self-cleaning. For this reason, the safety factor is neglected when dimensioning Geberit Pluvia

59 2 Planning 2.7 Emergency drainage 2.7 Emergency drainage General Country-specific standards and provisions must always be observed and applied. The following documents contain information on emergency overflows: EN DIN BS 8490 SN Flat roof guidelines from the Zentralverband des Deutschen Dachdeckerhandwerks Avis Technique CSTB Suissetec-Richtlinie Dachentwässerung For roof areas with internal drainage, an emergency overflow must be present, regardless of the size of the roof area. Consequently, the type of drainage (negative pressure system with Geberit Pluvia roof drainage system or conventional roof drainage system) does not have any influence on the basic question of the creation and necessity of emergency overflows. Further reasons for creating emergency overflows: dimensions of the sewage system too small blockage of the sewage system serious contamination of the roof outlets (e.g. from leaves) structural design of trapezoidal roofs too weak Basic rules The emergency drainage has the task of discharging rainwater when the rainwater outflow exceeds the drainage capacity of the existing roof drainage system. It is a drainage system separate from the roof drainage system and must be calculated and configured separately. It should be possible to convey at least the same amount of rainwater that is conveyed to the roof outlets through the emergency overflows. The emergency drainage can be done through the façade via an emergency overflow or through emergency overflows with an additional piping system. The emergency drainage must not be connected to the drainage system but must be drained unhindered to land areas that can be flooded without causing damage. The emergency drainage must be planned as an additional piping system when, for example, the roof geometry does not allow a drainage system with emergency overflow openings in the façade. The Geberit Pluvia emergency overflow system is a separate outlet system. The emergency overflows must be arranged and dimensioned so that flat roof accesses and flat roof connections cannot be flooded. The lower edge of the emergency overflows must be above the required head of water of the Geberit Pluvia roof outlets Emergency drainage on the building structure for flat roofs Flat roofs can be drained with emergency overflows in the facade. These must be placed so that the flow path of the rainwater between the roof outlet and the emergency overflow is not obstructed. Regardless of the design of emergency overflows, the lower edge of the emergency overflows must be arranged 5 cm above the uppermost covering layer (also holds true for green roofs). Furthermore, it must be ensured that there are no flat roof terminations, roof accesses etc. below the emergency overflow level. In order for the emergency overflows to react quickly to the rainwater outflow, they must be designed to be square and long. 5.5 H X Figure 68: Emergency overflow with flat roof, in the facade X H Width of the emergency overflow Distance from the upper edge to the parapet

60 2 Planning 2.7 Emergency drainage Emergency drainage with gutters Roofs with gutter drainage can be drained with emergency overflows in the gutter. Eaves gutters In the case of eaves gutters, the lower front edge can be used as an emergency overflow. Valley gutters Emergency overflows must be correctly positioned. This is especially important for valley gutters (e.g. with sawtooth roofs) because the emergency overflow function can only be ensured through the front sides of the gutter. Pay attention to the following points: Emergency overflows must be provided on both front sides Emergency overflows must be as wide as the gutter and open upwards The lower edge of the emergency overflow must be cm above the next roof outlet opening X Figure 69: Emergency overflow with eaves gutters In the case of eaves gutters, the emergency overflows can also be used with the roof outlets (lowest point of the respective gutter section) as well as at the front Figure 71: Emergency overflow with gutter, on the front side width of the emergency overflow X Width of the emergency overflow H ,5 % 10 m X Figure 72: Emergency overflow with gutter, on the front side overflow edge and distance from next roof outlet The head of water must be taken into account in the static calculation for the roof and the gutters. Figure 70: Emergency overflow with gutter, on the longitudinal side X H Width of the emergency overflow Distance from the upper edge to the gutter

61 2 Planning 2.7 Emergency drainage Emergency drainage with Geberit Pluvia emergency overflows For emergency drainage, Geberit Pluvia roof outlets can be used in conjunction with the corresponding Geberit Pluvia emergency overflow simply, quickly and without increasing the roof membrane. For flat roofs Geberit Pluvia roof outlet and Geberit Pluvia emergency overflow should be planned in the immediate vicinity (approx. 1 m) of each other. 12 l emergency overflow 19 l emergency overflow 25 l emergency overflow The Geberit Pluvia emergency overflow system is a drainage system that is separate from the Geberit Pluvia roof drainage system. The collected rainwater must be drained unhindered to land areas that can be flooded without causing damage. 1 2 Figure 73: Geberit Pluvia emergency overflow system as a separate drainage system 1 Geberit Pluvia drainage system 2 Geberit Pluvia emergency overflow system

62 2 Planning 2.7 Emergency drainage Conventional emergency drainage Dimensioning of emergency overflows according to DIN According to DIN :2008, drainage and emergency overflow systems must be able to drain more than the 5-minute rainfall (r (5,100) ) together at the site of the building as a minimum. Figure 74: Geberit Pluvia system with emergency drainage through a conventional pipe system The minimum discharge capacity of the emergency overflows results from the difference between the 5-minute rainfall and the maximum discharge capacity of the roof drainage system. 5.5 cm A Q NOT = (r (5,100) - r D,T C) Figure 75: Conventional emergency drainage as a construction measure In the case of emergency drainage as a construction measure, the lower edge of the emergency overflow must be at least 5.5 cm higher than the uppermost covering layer. Dimensioning emergency overflows Simplified dimensioning of the emergency overflows as a construction measure The emergency overflows can be dimensioned using the following empirical value: Q NO T r (5,10 0) r (D,T) D T C Minimum discharge capacity of the emergency overflows in litres per second (l/s) 5-minute rainfall in litres per second and hectare that must be expected once in 100 years Calculated rainfall in litres per second and hectare [l/(s ha)] Rainfall duration in minutes Annuality of the rainfall event Capacity factor (it is only permitted to take into account the capacity factor C when calculating the discharge from the calculated rainfall r (5,5) for the roof area) A Effective precipitation area in m 2 If an unusual amount of protection is required for a building, the emergency overflow system alone should be able to drain the 5-minute rainfall (5,100). This holds true for hospitals, theatres, sensitive communication institutions, storage rooms for substances that emit toxic or flammable gases upon moisture, and buildings in which special works of art are stored. Total rainfall in l/s x 25 cm 2 Example: Roof area with 4 roof outlets of 8 l/s each Total rainfall: 4 x 8 l/s = 32 l/s multiplied by 25 cm 2 = 800 cm 2 In order to ensure optimum discharge of the rainwater and prevent excessive loading of the roof, the height of the emergency overflow must be kept between 10 and max. 15 cm. Applied to this example, this yields a requirement for emergency overflow openings of 80 x 10 cm or 54 x 15 cm. The total requirement should be divided among several openings, e.g. 4 openings of 20 x 10 cm each

63 3 Installation 3.1 Geberit Pluvia roof outlets 3 Installation 3.1 Geberit Pluvia roof outlets The following installation instructions are abbreviated and incomplete versions. They contain the key steps. For installation, use the complete installation manual that is provided with every product Basic rules The branch discharge pipe of the roof outlet must always be fastened with an anchor point. In order to ensure the drainage capacities of the roof outlets, the function disc and the outlet grating must be installed immediately after the roof sealing work has been completed. If these are not installed, only emergency drainage that performs significantly less well is available during the construction phase. When connecting roof sealings and contact sheets for gutters, ensure that the roof outlet is not damaged during the installation or welding procedure Geberit Pluvia 12/25 l roof outlets Solid roof and insulated roof structure When installing in a solid roof or in an insulated roof structure, the following dimensions must be observed: L = 63 mm 25 L = 100 mm The roof outlet for roof foils and the roof outlet for bitumen are directly fastened to the roof structure

64 3 Installation 3.1 Geberit Pluvia roof outlets Lightweight roof For installation in a lightweight roof, the recess for a roof outlet must be made with the following dimensions: The roof outlet for roof foils is fastened with the installation sheet, art. no , in the roof structure

65 3 Installation 3.1 Geberit Pluvia roof outlets Connections The handling and installation of the roof sealing material has to follow the installation rules and technique of the roof sealing material. 3 Clean the surface using primer to degrease the contact sheet Connection with the bitumen roof sealing 1 Fasten roof outlet 4 Apply bitumen bonding agent for improved adhesion of the bitumen membrane 3 12 L = 63 mm 25 L = 100 mm 5 Apply bitumen sheeting to the dried bonding agent 2 Roughen the metallic surface of the roof outlet

66 3 Installation 3.1 Geberit Pluvia roof outlets Connection with fastening flange 3 Fasten outlet element. 1 Place anti-condensation insulation L = 63 mm 25 L = 100 mm 4 Install flange gasket. 2 Insert outlet element. 5 Install strips of roof sealing

67 3 Installation 3.1 Geberit Pluvia roof outlets 6 Create opening for outlet grating bolts. 8 Install flange Fasten flange. 7 Create opening for push-in bolts. 13 mm Nm Open roof sealing

68 3 Installation 3.1 Geberit Pluvia roof outlets Connection with fastening flange (gutter) 4 Screw flange to outlet element 1 Install flange gasket on outlet element 13 mm Nm Install outlet element on the underside of the gutter Connection with contact seam (gutter) When the roof outlet is installed in gutters, the following dimensions must be observed: 3 Install flange Depending on the product material, the roof outlet is soldered to the gutter or welded

69 3 Installation 3.1 Geberit Pluvia roof outlets 1 Remove insulation. 3 Drill outlet element. 4 Rivet the outlet element. 2 Insert outlet element in gutter. 5 Prepare the outlet element for soldering

70 3 Installation 3.1 Geberit Pluvia roof outlets 6 Solder the outlet element. Installing the outlet grating Prerequisite ø > 15 mm 6 cm 7 Install anti-condensation insulation. ø 8 15 mm = Mount the function disc

71 3 Installation 3.1 Geberit Pluvia roof outlets 2 Mount the outlet grating Geberit Pluvia 19 l roof outlets Connection with concrete gutter Prerequisite 21 ø 10 1 Mark the flange width and flange holes. 3 Lock both rotating lock bars. 2 Create holes. ø 6 mm

72 3 Installation 3.1 Geberit Pluvia roof outlets 3 Clean flange and clamping range. 6 Place and fasten the outlet element. 7 Seal the flange edge and fastening material. 4 Apply undercoat to surface. 5 Apply sealing material

73 3 Installation 3.1 Geberit Pluvia roof outlets Connection with metal gutter 3 Solder the flange edge and rivets. Prerequisite 21 ø 10 1 Place outlet element and drill rivet holes. Installing the outlet grating 1 Place the outlet grating on the two pins. 2 Rivet the outlet element

74 3 Installation 3.1 Geberit Pluvia roof outlets 2 Interlock the two rotary latching sliders x 28 cm / ø 28 cm cm > ø 17 cm Figure 78: Insulated roof structure Geberit Pluvia 45 l, 60 l and 100 l roof outlets For installation in the roof structure, the recess for a roof outlet must be made with the following dimensions: Connection with bitumen roof 1 Lay contact foil. ø 30 ~ 1.5 x 1.5 m 28 x 28 cm / ø 28 cm Figure 76: Lightweight roof 2 Heat the sheet metal. 28 x 28 cm Figure 77: Solid roof 3 Fasten roof outlet

75 3 Installation 3.1 Geberit Pluvia roof outlets 4 Roughen the metallic surface of the roof outlet. Connection with contact seam (gutter) Prerequisite > 35 ø 28 cm 5 Clean the surface using primer to degrease the contact sheet. Depending on the product material, the roof outlet is soldered to the gutter or welded. 1 Insert outlet element in gutter. 6 Apply bitumen bonding agent for improved adhesion of the bitumen membrane. 2 Solder or weld outlet element. 7 Apply bitumen sheeting to the dried bonding agent

76 3 Installation 3.1 Geberit Pluvia roof outlets Install the outlet grating Vapour barrier connection Prerequisite ø > 15 mm 6 cm For a roof structure with vapour barrier, the base unit of the vapour barrier connection is installed in the roof structure (solid roof, lightweight roof, insulated roof) like the roof outlets. Vapour barrier elements in solid roof, bitumen 4 Install the outlet grating. 1 Install anti-condensation insulation. 2 Place the vapour barrier element on the roof recess

77 3 Installation 3.1 Geberit Pluvia roof outlets 3 Fasten the vapour barrier element. 7 Apply undercoat to surface. 4 Roughen the vapour barrier element. 8 Bond the bitumen foil. 5 Clean the vapour barrier element. Prepare the heating element feed-through Heat the vapour barrier element. Prepare the heating element feed-through

78 3 Installation 3.1 Geberit Pluvia roof outlets Vapour barrier elements in lightweight roof, plastic foil 3 Fasten the vapour barrier element. 1 Install anti-condensation insulation. 4 Tape up the outlet area using adhesive tape. 2 Place the vapour barrier element on the roof recess. PH 2 5 Lay out the vapour barrier foil Create an opening in the vapour barrier foil