MULTIFLEX Girder Slab Formwork. Instructions for Assembly and Use Standard Configuration

Transcription

1 MULTIFLEX Girder Slab Formwork Instructions for Assembly and Use Standard Configuration Edition 08 l 2014

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3 Content Introduction Overview, Main Components 1 Intended Use 2 Misapplications 2 General Safety Instructions 3 Safety Instructions System-Specific 4 Additional Product Information 4 Care and Maintenance Instructions 5 Assembly and Dismantling A1 Storage and Transportation 6 A2 A3 A4 Components Plywood Formlining 7 Formwork Girders 8 Slab Props, Formwork Support 11 Assembly Aids, Shuttering Aids 12 Shuttering Shuttering 14 Formwork Assembly 16 Guardrails, Stopend Formwork At the Slab Edge 17 On Casting Segments 17 A5 Striking 18 A6 Beams, Stopend Formwork With Beam Formwork UZ 20 With Stopend Angle AW 21 A7 Example of Use 22 A8 Dimensioning of the Slab Formwork 24 Tables Formlining 26 GT 24 as Slab Girder 28 VT 20 as Slab Girder 30 2 x GT 24 as Main Girder 32 2 x VT 20 as Main Girder 34 PEP Slab Props 36 MULTIPROP Slab Props 44 Beam Formwork UZ 46 Stopend Angle AW 47 Components Components 48 Key Safety Instructions Visual Check Load-Bearing Point Safety helmet Safety goggles Note Tip PSAgA Safety gloves Safety shoes MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

4 Introduction Overview, Main Components a 4 1b 2 5 1a Main Beam 1b Cross Beam 2 Crosshead 3 Clawhead 4 Prop 5 Tripod 6 Formwork Panel 7 Flexclip 1 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

5 Introduction Intended Use Features PERI MULTIFLEX is a flexible girder slab formwork system for slab thicknesses up to 1.00 m. The formwork consists of main beams and cross beams, plywood formlining along with crossheads and clawheads. The following main beam / cross beam combinations are possible: VT 20 /VT 20, GT 24 / VT 20, GT 24 / GT 24. Users may select the type of formlining required. Technical Data GT 24 as main beam and crossbeam Slab thicknesses up to 1.00 m VT 20 as main beam and crossbeam (presented in the following) Slab thickness up to 0.50 m GT 24 as main beam, VT 20 as crossbeam Slab thickness up to 0.50 m 2 x GT 24 as main beams 1 x GT 24 as crossbeam Slab thicknesses up to 1.00 m 2 x VT 20 as main beams 1 x VT 20 as crossbeam Slab thicknesses up to 1.00 m For permissible slab thicknesses and available prop loads: see PERI Tables. Misapplications General The use in a way not intended, deviating from the standard configuration or the intended use according to the assembly instructions, represents a misapplication with a potential safety risk. Only PERI original components may be used. The use of other products and spare parts represents a misapplication with associated safety risks. Changes to PERI components are not permitted and represent a misapplication with associated safety risks. A possible foreseeable misapplication is described in the respective chapter. The illustration on the front cover of these assembly instructions is understood to be a system representation only. The structures shown in these assembly instructions are examples and feature only one component size. They are valid for all component sizes contained in the standard configuration. For a better understanding, detailed illustrations are partly incomplete. The safety installations which have possibly not been featured in these detailed drawings must nevertheless be available. 2 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

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7 Introduction Safety Instructions General PERI products have been designed for exclusive use in the industrial and commercial sectors only by suitably trained personnel. These assembly instructions serve as basis for the project-related risk assessment and the instructions for the provision and use of the system by the contractor (user). However, they are not intended to replace them. Materials and working areas are to be inspected on a regular basis especially before each use and assembly, and checked for signs of damage as well as stability and functionality. Damaged components must be exchanged immediately on site and may no longer be used. Safety instructions and permissible loads must be observed at all times. Remove safety components only when they are no longer required or if the official representative of the contractor gives instructions for this to take place. For the application, inspection and repair of our products, all current safety regulations and guidelines must be observed in the respective countries where they are being used. Components provided by the contractor must conform with the characteristics required in these assembly instructions as well as with all valid construction guidelines and standards. In particular, the following applies if nothing else is specified: timber components: Strength Class C24 for Solid Wood according to EN 338. scaffold tubes: galvanised steel tubing with minimum dimensions Ø 48.3 x 3.2 mm according to EN : scaffold tube couplings according to EN 74. Deviations from the standard configuration may only be carried out after a separate risk assessment has been completed by the contractor (user). On this basis, appropriate measures for the working safety and stability are to be implemented. The contractor must ensure that the assembly instructions provided by PERI are available at all times for the users and must ensure they are also fully understood. During unfavourable weather conditions, suitable precautions and measures are to be implemented in order to guarantee working safety and stability. After exceptional events or long periods of downtime whereby the formwork or sub-structure was not used, the unit and its components must be checked for signs of damage as well as stability and functionality. The contractor (user) must ensure the stability throughout all phases of construction. He must ensure and verify that all loads which occur are safely transferred. The contractor (user) has to provide safe working areas for site personnel which are to be reached through the provision of safe access ways. Areas of risk must be cordoned off and clearly marked. Hatches and openings on accessible working areas must be kept closed during working operations. The contractor must ensure that the user fulfils the minimum requirements for personal protective equipment, e.g.: Safety gloves, Safety helmet, Safety shoes, Safety goggles, PSAgA. Storage and Transportation Do not drop the components. Store and transport components ensuring that no unintentional change in their position is possible. Detach lifting gears from the lowered units only if they are in a stable position and no unintentional change is possible. During the moving procedure, ensure that components are picked up and set down so that unintentional falling over, falling apart, sliding or rolling is avoided. Use only suitable load-carrying equipment to move the components as well as the designated load-bearing points. During the moving procedure, always use a guide rope. Move components on clean, flat and sufficiently load-bearing surfaces only. Use original PERI storage and transport systems, e.g. crate pallets, pallets or stacking devices. Residual Risks The materials and components fully complied with all valid safety regulations at the time when they were first available on the market. Nevertheless, a residual risk cannot be excluded even when used as intended. Possible residual risks and the resulting dangers are described in the respective chapter. MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 3

8 Introduction Safety Instructions System-specific Retract components only when the concrete has sufficiently hardened and the responsible person has given the instructions to strike. Anchoring is to take place only if the anchorage has sufficient concrete strength. During striking, do not tear off the formwork elements with the crane. The existing prop loads (see tables) must be safely transferred by means of sufficiently load-bearing slab props or shoring systems. In order to avoid an overloading of the integrated temporary props, the loadbearing capacity of the slabs, bottom plates and beams which have already been completed must be activated. For this, a free deflection possibility of these components is required. This takes place by releasing and re-installing all existing temporary props, and is also required for formwork systems where the prop head is an integral part of the slab formwork. For supporting pre-cast slabs, details provided by the manufacturer are also to be taken into consideration. When storing heavy items on the formwork, the load-bearing capacity must be taken into consideration. Cantilevers may only be accessed after bracing has been mounted. The horizontal fixed position of the slab formwork must be guaranteed. This is given with circumferential walls and pre-concreted beams. Otherwise, the transfer of the horizontal loads has to be guaranteed by means of other measures supplied by the contractor, e.g. bracing. Load assumptions for horizontal loads in accordance with DIN EN Additional PERI Product Information MULTIFLEX brochure GT 24 Girder user information VT 20 Girder user information Assembly Instructions: PEP Ergo, PEP Assembly Instructions: MULTIPROP MP Assembly Instructions: MULTIPROP System Assembly Instructions: VARIODECK Instructions for Use: Pallets and Stacking Devices Instructions for Use: Stripping Cart ASW 465 Instructions for Use: Stripping Cart Alu PERI Design Tables 4 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

9 Introduction Care and Maintenance Instructions Formwork Regular cleaning and care is necessary in order to maintain the value and usability of the formwork material in the long-term. In addition, some repair work may also be inevitable due to the severe working conditions. The following points should help to keep care and maintenance costs as low as possible. The elements (used or new) should be sprayed all over with the PERI Bio Clean concrete release agent before every use. This makes it easier and quicker to clean the formwork. The concrete release agent should always be sprayed on thinly and evenly! Spray rear side of the formlining with water immediately after concreting. This saves on time-consuming cleaning operations. The formlining of the panels must be sprayed with the release agent immediately after striking if in continuous use. Only then cleaning can take place with a scraper, brush or rubber lip scraper. Important: do not clean plywood formlining with a high-pressure cleaner as this can lead to damage. Box outs and built-in parts should be fixed with double-headed nails. This makes it easier to remove the nails later on and prevents damage to the formlining to a great extent. Any unneccessary anchor holes should be sealed with plugs. As a result, this eliminates subsequent cleaning or repair work. Anchor holes accidentally blocked with concrete are freed by means of a steel pin from the formlining side. When putting down bundles of reinforcement bars or other heavy objects on horizontally-stored formwork elements, suitable support items, e.g. square timbers, are to be used. This prevents indentations and damage being caused to the formlining. If possible, concrete internal vibrators are to be used with rubber caps. This reduces the risk of damage to the formlining if accidentally inserting the internal vibrator between the reinforcement and formlining. The elements should not be treated with concrete release agent immediately before transport due to safety reasons. Steel brushes or hard metal scrapers must not be used for cleaning powdercoated elements or accessories. Such cleaning processes will destroy the high-quality powder coating. Use spacers for reinforcement with large-area support or flat supports. This prevents indentations being created in the formlining by the load. Mechanical components, such as spindles or gear mechanisms, must be cleaned of dirt or concrete residue before and after use, and then greased with suitable lubricants. MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 5

10 A1 Storage and Transportation Instructions for Use for PERI Pallet and Stacking Devices must be followed at all times! Manually-created transport units must be correctly stacked and secured! Pallets and stacked items are to be protected against the effects of the weather, e.g. elements secured against lifting by means of tension belts! Paletten und Stapelrungen Originalbetriebsanleitung Ausgabe Load transport PERI pallets and stacking devices are suitable for lifting by crane or forklift. They can also be moved with the PERI pallet lifting trolley. Always attach the 4-sling lifting gear using the four load-bearing points. Only move one pallet at any one time with the crane. Fig. A1.01 The following are just some examples. (Fig. A A1.02a) Fig. A MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

11 A1 Storage and Transportation Fig. A1.02a Fig. A1.02b A2 Components Plywood formlining For other formlining possibilities: see PERI product range. In the PERI design tables and slide rule, the 3-S sheet, 21 mm, has been taken into consideration. (Fig. A2.01) The use of other formlining must be statically checked. Fig. A2.01 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 7

12 A2 Components GT 24 Girder Permissible internal forces and bearing forces Permissible shear force Permissible bearing force in the nodes (+/- 2 cm) Permissible bearing force between the nodes Permissible bending moment Permissible support moment (for support directly under the nodes) Permissible support moment (support between the nodes) perm. Q = 13.0 kn perm. A n = 28.0 kn perm. A m = 20.0 kn perm. M = 7.0 knm perm. M n = 7.0 knm perm. M m = 4.0 knm Bending stiffness EI = 887 knm² End supports for single spans and continuous girders + + min. 16 cm min. 16 cm l A perm. A n,end = 16 kn l A perm. A m,end = 13 kn Supports for continuous and cantilevered girders perm. A n = 28 kn perm. M n = 7.0 knm perm. A m = 20 kn perm. M m = 4.0 knm l A l A For carrying the maximum bearing force into the GT 24 girder, the support lengths l A must have the following minimum dimensions: 13.5 cm for support directly under the nodes, 14.5 cm for support between the nodes. 8 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

13 A2 Components GT 24 Girder Bearing pressure: Reaction force perm. A = b x L eff x k c x perm. D b = support width L eff = effective support length = L A + 2 x 3 cm, but 2 x L A Design-typical lateral pressure coefficient for support directly under the nodes k c,90,n = 1.45 support between the nodes k c,90,m = 1.0 Bearing pressure perm. D = 1.24 N/mm² Specified shear forces For the design, the shear forces (external loads) may be reduced as follows: e 2 e 1 F 1 F 2 h q Q q,red = q x l x ( 1 LA 48 cm ) 2 l l e 1 e 1 < 60 cm: Q F1,red = F 1 x I e1 x I 60 cm L A 24 e 2 > 60 cm: Q F2 = F 2 x I e 1 I I Q red = Q q,red + Q F1,red + Q F2 q x I 2 F 1 x I e 1 I Q q Q F1 Q red perm. Q = 13 kn In addition, the shear force Q = Q q + Q F1 + Q F2 must be verified directly over the support Q perm. Q n = 16 kn F 2 x I e 2 I Q F2 The following applies for cantilever beams: I = 2 x I k MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 9

14 A2 Components VT 20 Girder Permissible internal forces and reaction forces: Permissible shear force perm. Q = 11.0 kn Permissible reaction force perm. A = 22.0 kn Permissible bending moment perm. M = 5.0 knm Specified shear forces e 2 e 1 F 1 F 2 q Bending stiffness EI = 460 knm² End supports for single spans and continuous girders L A 20 h I min. 15 cm q x I 2 Q q l A perm. A = 16 kn Q F1 F 1 x I e 1 I Q F2 45 cm F 2 x I e 2 I l A perm. A = max. perm. A = 22 kn The projecting length of the girder must be at least 15 cm. Depending on the projecting length of the girder between the two values A = 16 kn and max. perm. A = 22 kn, the permissible bearing load can be linearly interpolated. For transferring the maximum reaction force into the VT 20 girder, the support length l A must be at least 13.5 cm. Bearing pressure: Reaction force perm. A = b x L eff x k c x perm. D b = support width L eff = effective support length = L A + 2 x 3 cm, but 2 x L A Design-typical lateral pressure coefficient with k c,90,n = 1.15 Bearing pressure perm. D = 1.24 N/mm 2 For the design, the shear forces (external loads) may be reduced as follows: Q q,red = q x l x ( 1 LA 40 cm ) 2 l l e 1 < 50 cm: Q F1,red = F 1 x I e1 x I 50 cm e 2 > 50 cm: Q F2 = F 2 x I e 1 I Q red = Q q,red + Q F1,red + Q F2 Q red perm. Q = 11 kn In addition, the shear force Q = Q q + Q F1 + Q F2 must be verified directly over the support. Q perm. Q n = 16 kn The following applies for cantilever beams: I = 2 x I k e 1 10 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

15 A2 Components Slab Props Loads from the MULTIFLEX slab formwork must be safely transferred into the ground. Do not exceed the permissible load-bearing capacities! PERI Shoring Steel Tube Props PEP (4a). Aluminium Props MULTIPROP MP (4b). Shoring Towers MULTIPROP System, PERI UP, PD 8, ST 100 (not shown). See corresponding Assembly Instructions. 4a 4b Formwork Support For providing stable support for one or two formwork girders and as intermediate support. Fig. A2.01 At the end of the girder or girder joint. Crosshead 20/245 (2a) with self-locking coupling. Lowering head 20/24 (2b) with pin and cotter pin. For intermediate support Clawhead 245 with self-locking coupling (3a). Clawhead 16/205 with self-locking coupling (3b). 2a 3a 2b 3b 40 Fig. A2.02 When marking out the prop, pay attention to the required lowering height (min. 40 mm). Assembly: 1. Place head on the prop. 2. Engage self-locking coupling and check functionality. Secure head without self-locking coupling with pin and cotter pin. 3. Position prop. (Fig. A2.03) 40 The formwork supports fit all standard slab props with 40 mm hole diameters. Release: Release the self-locking coupling or loosen pin and remove head. Fig. A2.03 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 11

16 A2 Components Assembly aids Universal Tripod For slab props Ø 48 (Fig. A2.04a) Tripod PEP Ergo For slab props Ø 44 (Fig. A2.04b) 120 mm. 64 mm. Fig. A2.04a Through the swivel foot design, they can also be positioned in corners or against straight walls. Fig. A2.04b Brace Clamp For assembling the diagonal bracing with boards. For slab props Ø mm. (Fig. A2.05a) For slab props Ø mm, and 100 mm x 100 mm up to 120 mm x 120 mm. (Fig. A2.05b) Fig. A2.05a Fig. A2.05b MULTIPROP Frame MRK For bracing PERI MULTIPROP props. (Fig. A2.06) PEP Frames PRK For bracing PERI PEP props. (Fig. A2.07) Fig. A2.06 Fig. A MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

17 A2 Components Shuttering Aids Erection Bar For installing and dismantling the girders. For GT 24 and VT 20 Erection Bar GT/VT. (Fig. A2.08) For GT 24 girders Erection Bar 24. (Fig. A2.09) Distance Device MF-Plus For fitting and aligning formwork girders with the MULTIFLEX System. (Fig. A2.10) Fig. A2.08 Fig. A2.09 Fomwork Carriage PERI Stripping Cart ASW 465 (Fig. A2.11) or Stripping Cart Alu. Fig. A2.10 Fig. A2.11 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 13

18 A3 Shuttering mm Turn the props so that the G-hook can be operated. Mount Crosshead or Clawhead on the prop and lock in place (with the self-locking coupling). Secure other types with pins and cotter pins: As alternative to the Crosshead: Lowering Head 20/24 for easy lowering. Position Crosshead props on a flat, clean and sufficiently load-bearing surface. Secure with Tripod (assembly aid). For inclined use, separate proof of stability is required! Horizontal loads from the shuttering procedure can only be transferred for formwork heights up to approx. 3.0 m. 2a 2b Formwork height > 3.0 m with MULTIPROP prop Brace props with Frame MRK as assembly aid. For further details, see Type Test and MULTIPROP assembly instructions. Formwork height > 3.0 m with PEP steel tube prop Brace props with Frame MRK as assembly aid. Alternative: Mount diagonal bracing as assembly aid with boards and brace clamps. 14 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

19 A3 Shuttering 3 4 VT 20 VT 20 min. 15 min. 15 VT 20 VT 20 min. 15 min. 15 min. 15 max. 50 x prop spacing c Main beam spacing b Level Crosshead props. Install main beam from below with the Erection Bar. The Crosshead securely supports one or two main beams with no risk of tipping. Cantilever: VT 20 max. 50 cm GT 24 max. 45 cm Do not begin concreting work on the cantilever. Fit cross beam from below with the Erection Bar. Adjust the cross beam so that plywood formlining joints are always positioned on a cross beam or pair of girders. Alternative: Install and align cross beams with Distance Device. Girder overlap on both sides: VT 20 min cm GT 24 min cm 5 6 c Fall hazard! Mount guardrails before shuttering and according to valid regulations! Secure cross beam against tipping, e.g. with Flexclip MULTIFLEX System. Fit plywood formlining and secure with nails. Level formwork and spray, e.g. with PERI Bio Clean. Attention: risk of slipping! Risk of tipping! Ensure load effects are safely transferred! Attach intermediate props with Clawheads in prop spacings c on the beam. Adjust lengths of props accordingly. GT 24 girder: see A3. The MULTIFLEX slab formwork can now be loaded. Ensure pallets are available on the assembly area during striking. MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 15

20 A3 Shuttering Formwork Assembly 3 combinations are possible with GT 24 and VT 20 girders: 1. VT 20 / VT 20 (Fig. A3.01) 2. VT 20 / GT 24 (Fig. A3.02) 3. GT 24 / GT 24 (Fig. A3.03) 1. VT 20 / VT mm plywood VT 20 cross beam VT 20 main beam h = 42 cm 2. VT 20 / GT mm plywood VT 20 cross beam GT 24 main beam h = 46 cm 3. GT 24 / GT mm plywood GT 24 cross beam GT 24 main beam h = 50 cm Fig. A3.01 Fig. A3.02 Fig. A MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

21 A4 Guardrails, Stopend Formwork Guardrails at the slab edge with slab tables The open edge of the building is secured with PERI slab tables. (Fig. A4.01) See e.g. PERI VARIODECK assembly instructions. Guardrails on the casting segment with Stopend Angle. Assembly The Stopend Angle AW (11) or Plastic Stopend Angle can be fixed in the girder longitudinal direction and laterally to the girder. Fig. A wire nails ø 3.1 x 65 (6 pieces at front, 2 pieces at rear, Item no ). With Clamp for fixing to the girder or timbers. Insert Handrail Post AW (12) and nail securely at rear end. (Fig. A4.02) With conventional stopends. (Fig. A4.04) min. 10 max. 50 cm With panel formwork. (Fig. A4.04a) Fig. A4.02 Fig. A4.03 With Slab Stopend Bar 105 (13) and Handrail Post HSGP-2 (14). (Fig. A4.03) 11 Guardrails Secure guardrail boards with wire nails! Fig. A4.04 Fig. A4.04a Technical data Permissible widths of influence: see PERI Design Tables Stopend Angle AW Plastic Stopend Angle Slab Stopend Bar 105 Guardrails with Guardrail Holder GT 24 / VT 20 and Handrail Post HSGP-2 Permissible width of influence for HSGP with guardrail boards. (Fig. A4.05) When using VT 20 formwork girders, only use holes 1-3 on the handrail post (16)! (Fig. A4.05a) Fig. A4.05 Fig. A4.05a MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 17

22 4 4 A5 Striking 1 2 Curing time must be taken into consideration! Dismantle intermediate props and store in pallets. Remove Flexclip with the Fixing Tool. For horizontal transport, the heads stay attached to the props! Lower all crosshead props by approx. 4 cm. With larger spans, begin lowering and removal of props in the slab centre. 2a 3 Alternative to Fig. 2 Use hammer blow to lower the Lowering Head = 4 cm. Push back wedge to the original position for the next use and hammer in securely. Remove cross beams with Erection Bar and store in pallets. Cross beams placed under the plywood formlining joints remain in position. 18 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

23 A5 Striking 4 5 Remove plywood and remaining cross beams and store in pallets. Accurately stack the plywood formlining in order to be able to clean the stacked sheet edges. Remove main beams and store in pallets. Take prop load into consideration! In those cases where the formwork is not dismantled or if back-propping is used, concreting of a slab above could lead to overloading of the props. 6 7 Remove the Crosshead props and store them in pallets. For horizontal transport, the heads stay attached to the props! Accurately stack the plywood formlining in order to be able to clean the stacked sheet edges. Before the first and each further use, spray the plywood formlining edges with, e.g. PERI Bio Clean. This ensures easier shuttering and striking, and looks after the plywood. MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 19

24 A6 Beams, Stopend Formwork With Beam Formwork UZ For beams up to h = 80 cm Consisting of UZ Beam Bracket 40 (15a) and UZ Beam Width Adjustment Bar 80 (15b). 15a No formwork tie up to h = 80 cm. Cross-sections are to be formed continuously. Girders, timbers or, e.g. TRIO elements, can be used as side and slab formwork. For extra-wide beams, the perforated rails can be coupled together. 15b Max. beam widths for side plate width b = 10 cm. 1 x UZ Beam Width Adjustment Bar 80 = 45 cm 2 x UZ Beam Width Adjustment Bar 80 = 135 cm 1 x UZ Beam Width Adjustment Bar 129 = 95 cm (Fig. A6.01) Fig. A With Stopend Angle AW For beams up to h = 60 cm The Stopend Angle (11) can be nailed to the plywood formlining as stopend formwork up to h = 40 cm. (Fig. A6.02) Fig. A6.02 With the AW Clamp 8-10, larger beams are possible. (Fig. A6.03) TRIO, MAXIMO, DOMINO or HANDSET elements can be used as side formwork. (Fig. A6.04) Used plywood formlining can be utilised for the working areas. 11a Fig. A6.03 Fig. A MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

25 A6 Beams, Stopend Formwork With Stopend Angle AW Fixing with nails Nailing is carried out on the plywood formlining, boards, planking, panels or timbers. Nailing at an angle ensures better fixing as well as looking after the girders and plywood. The striking joint allows easier striking. Fixing with AW Clamps 8-10 Push the AW Clamp 8-10 over Stopend Angle AW. Press the Stopend Angle AW together with the clamp firmly against the stopends. Tighten the nut of the Clamp AW with the hammer. Assembly of the guardrails Mount the AW Handrail Post on the Stopend Angle. Insert locking device of the Handrail Post. Secure the Handrail Post on the girder or plywood formlining using 2 nails Ø 3.1 x 80. With Plastic Stopend Angle Nail with 8 nails Ø 3.1 x 65 mm (6 at the front and 2 at the back). MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 21

26 A7 Application Example Overview of edge table (Fig. A7.01) The basis of the MULTIFLEX is an allside horizontal, non-displaceable and supported slab formwork! This is given for circumferential walls and pre-concreted beams. Otherwise, the transfer of horizontal loads must be guaranteed in according at currently vallid standards through other measures provided on site, e.g. bracing! VT 20: min. 15 cm, max. 50 cm GT 24: min. 16 cm, max. 45 cm Overview of starting field (Fig. A7.02) max. 30 Fig. A MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

27 A7 Application Example Fig. A7.01 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 23

28 A8 Dimensioning of the Slab Formwork PERI Design Tables Example: dimensioning with VT 20/ VT 20 girder combination Fig. A8.01 Slab thickness: Clear height: Main and cross beam: Plywood: d = 20 cm h = 2.80 m VT mm, 62.5 x 250 cm Slab Thickness d [m] Cantilever e [m] Load q* [kn/m²] Secondary girder spacing a [m] Prop spacing c [m] Formlining The 3-S sheet, 21 mm, has been taken into consideration. Values for other sheets: see PERI Tables. 1. Secondary girder spacing a Support of the formlining is subject to the slab thickness and the type of formlining used. (Fig. A8.02). Secondary girder spacing 62.5 cm Fig. A8.02 a = 62.5 a = 62.5 a = Main girder spacing b Support for the cross beam. Permissible span for cross beam according to PERI Tables: 2.05 m. Selected: 2.00 m, depending on the spatial geometry. (Fig. A8.03) b = 2.05 m Main girder spacing 2.00 m Fig. A MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration

29 A8 Dimensioning of the Slab Formwork 3. Prop spacing c Supporting the main beam. (Fig. A8.04) Prop spacing 1.50 m = 50 cm 4. Prop load Value from the PERI Tables = 22.0 kn. By selecting a main beam spacing of b = 2.00 m, this results in a prop load to be removed of: H F = 22 kn x 2.00 m = 21.5 kn 2.05 m Select PERI slab prop (PEP; MULTIPROP) corresponding to the extension length h with permissible prop load = 21.5 kn. Fig. A8.04 c = 1.50 m c = 1.50 m c = 1.50 m Example with PERI slide rule Carry out dimensioning for the MULTIFLEX slab formwork with the tables according to the girder combination. Depending on the slab thickness, the selected secondary girder spacing and plywood result in the main beam and prop spacings. (Fig. A8.05) b a c Fig. A8.05 MULTIFLEX Girder Slab Formwork Assembly Instructions for Standard Configuration 25

30 Formlining Overview, Static Values Plywood Type of plywood Thickness [mm] Veneers E-Modulus [N/mm²] Perm. [N/mm²] parallel/cross parallel/cross Fin-Ply 21 Birch 8560/ /12.4 Fin-Ply, Maxi 20 Birch 7500/ /10.5 Fin-Ply, USA 19 / ¾ Birch 6180/ /11.5 Fin-Ply 18 Birch 8730/ /12.2 PERI Birch 21 Birch 8560/ /12.4 PERI Birch, USA 19 / ¾ Birch 9170/ /13.6 PERI Spruce Conifer Timber 7000/ /6.3 3-Ply Plywood 27 Spruce 8000/ /1.5 3-Ply Plywood 21 Spruce 8000/ /1.3 FinNa-Ply 21 Conifer Timber 7910/ /5.0 The statical/mechanical values given in the table refer, according to information from the manufacturers, to a moisture content of 15%. But the GSV stipulate the values of moisture content as 20%. The values for the E-Modulus are therefore to be reduced by a factor of and the values for the permissible stress by a factor of The fibres of the face veneer span in the direction of the first length shown for the plywood size. Solid Timber Conifer Timber, Sorting Class C24 E-Modulus [N/mm 2 ] Perm. [N/mm²] parallel parallel The permissible value according to DIN 1052 results in short for Application Class 2 with load duration. 26

31 Plywood Plywood 21 mm The E-Modulus and the permissible stress are based on the grade and moisture content of the plywood. (See Overview, Static Values ) max. deflection max. moment (valid for min. 3 spans) hk L 4 f = E I M = hk L 2 L L L L L L L f f E = 3000 N/mm 2 E = 4000 N/mm 2 E = 5000 N/mm 2 E = 6000 N/mm 2 E = 7000 N/mm 2 E = 8000 N/mm cm 70 cm 65 cm 60 cm 55 cm 50 cm 45 cm = 5 N/mm 2 = 7 N/mm 2 = 9 N/mm 2 = 11 N/mm 2 = 13 N/mm cm Span L 35 cm Deflection f [mm] cm 25 cm Wall Formwork Fresh Concrete Pressure hk [kn/m 2 ] Slab Formwork Slab Thickness d [cm] 27

32 MULTIFLEX GT 24 used as Slab Girder Slab Thickness d [m] Cantilever e [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Prop Spacing c [m] Slab Thickness d [m] Cantilever e [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Prop Spacing c [m]

33 MULTIFLEX GT 24 used as Slab Girder Slab Thickness d [m] Cantilever e [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Prop Spacing c [m] Calculation basis: *Load according to EN Dead load Concrete load Equivalent load: concreting Equivalent load: working conditions Total load Q 1 = 0.40 kn/m 2 Q 2,b = 24.5 kn/m 3 x d [m] Q 4 = 0.10 x Q 2,b 0.75 kn/m 2 Q kn/m 2 Q 2,p = 0.75 kn/m 2 Q = Q 1 + Q 2,b + Q 2,p + Q 4 Table values mean the following: 2.77 perm. main girder spacing b [m] 28.0 actual prop load [kn] The deflection has been limited to l/500 Main girder support at centre of girder nodes Secondary girder assumed as single span For cantilevers: c < 90 cm; e = 30 cm c 90 cm; e = 45 cm c: width of main beam interior span or prop spacing e: length of cantilever Main girder spacing b b Secondary girder spacing a a a a e c c c c e c c c Prop spacing 29

34 MULTIFLEX VT 20 used as Slab Girder Slab Thickness d [m] Cantilever e [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Prop Spacing c [m] Slab Thickness d [m] Cantilever e [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Prop Spacing c [m]

35 MULTIFLEX VT 20 used as Slab Girder Slab Thickness d [m] Cantilever e [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Prop Spacing c [m] Calculation basis: *Load according to EN Dead load Concrete load Equivalent load: concreting Equivalent load: working conditions Total load The deflection has been limited to l/500 Secondary girder assumed as single span For cantilevers: c < 75 cm; e = c/2 c 75 cm; e = 50 cm c: width of main beam interior span or prop spacing e: length of cantilever Q 1 = 0.40 kn/m 2 Q 2,b = 24.5 kn/m 3 x d [m] Q 4 = 0.10 x Q 2,b 0.75 kn/m 2 Q kn/m 2 Q 2,p = 0.75 kn/m 2 Q = Q 1 + Q 2,b + Q 2,p + Q 4 Main girder spacing b b Secondary girder spacing a a a a Table values mean the following: 2.61 perm. main girder spacing b [m] 22.0 actual prop load [kn] e c c c c e Prop spacing c c c 31

36 MULTIFLEX Secondary Girder: GT 24 Main Girder: 2 x GT 24 Slab Thickness d [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Cantilever e [m] Prop Spacing c [m] Slab Thickness d [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Cantilever e [m] Prop Spacing c [m]

37 MULTIFLEX Secondary Girder: GT 24 Main Girder: 2 x GT 24 Slab Thickness d [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Cantilever e [m] Prop Spacing c [m] Calculation basis: *Load according to EN Dead load Concrete load Equivalent load: concreting Equivalent load: working conditions Total load Q 1 = 0.40 kn/m 2 Q 2,b = 24.5 kn/m 3 x d [m] Q 4 = 0.10 x Q 2,b 0.75 kn/m 2 Q kn/m 2 Q 2,p = 0.75 kn/m 2 Q = Q 1 + Q 2,b + Q 2,p + Q 4 Table values mean the following: 3.16 perm. main girder spacing b [m] 56.0 Secondary girder spacing a a a a actual prop load [kn] The deflection has been limited to l/500 Main girder support at centre of girder nodes Secondary girder assumed as single span For prop loads < 28.0 kn, 1 x GT 24 as main beam is sufficient. b Main girder spacing b For cantilevers: c < 90 cm; e = 30 cm c 90 cm; e = 45 cm c: width of main beam interior span or prop spacing e: length of cantilever e c c c e c c Prop spacing c 33

38 MULTIFLEX Secondary Girder: VT 20 Main Girder: 2 x VT 20 Slab Thickness d [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Cantilever e [m] Prop Spacing c [m] Slab Thickness d [m] Load q* [kn/m 2 ] Sec. Girder Spacing a [m] Cantilever e [m] Prop Spacing c [m]