Technical Standard Category A

Transcription

1 Technical Standard Category A Guidelines for the Assessment of Proposed Structures/Works and Adjacent to SEQ Service Providers Sewers on Private Properties (not roads) up to and

2 Document Details This document is only valid on the day it was printed. Document Sponsor Chief Operating Officers of the SEQ Service Providers Version Date May 2012 References Building and Adjacent to SEQ Service Providers Assets Assessment Manual Technical Standard Category B Guidelines for the assessment of proposed structures/works over and adjacent to SEQ Service Providers pressure mains on private properties (not roads) Technical Standard Category C Guidelines for the construct tion of works over and adjacent to SEQ Service Providers assets on public roads

3 Table of Contents 1. Introduction Definitions Abbreviations Guidelines for different circumstances Diagrams Appendix A Guidelines for different circumstances 7 15 Item 1 Maintenance and inspection i shafts Item 2: including 225 mm Item 3: Sewer connections servicing own or adjoining property Item 4: Easements reserved for sewerage purposes either containing a SEQ Service Providers asset or not Item 5: Garages, sheds (greater than 10m2) and workshops (colour bond or timber construction) Item 6: Carports, sheds (less than 10m2), pergolas, verandas, gazebos, sails and decking Item 7: Residences Item 8: Eaves and cantilevers on buildings Item 9: Fences and retaining walls Item 10: Swimming pools and spas Item11: Driveways and paving Item 12: Excavation and landscaping Item 13: Utilities Item 14: Commercial/industrial buildings, public buildings and sport stadiums Item 15: Telecommunication and electrical transmission poles and towers Page 3 of 19

4 1. Introduction These guidelines relate to construction works being carried out over or adjacent to SEQ Service Providers sewers. Water supply (potable or recycled) and sewerage are essential services vital to the health and wellbeing of the community and to protecting the environment. Any disruption to these services can have significant consequences. If intended works are to be constructed over or within 1.0 m of a SEQ Service Providers asset, approval must be sought from the relevant SEQ Service Providers prior to the commencement of any works. This is a legislated requirement under the Water Supply (Safety& Reliability) Act 2008, Part 7, Section 192 and the South-East Queensland Water (Distribution and Retail Restructuring) Act2009, Part3, Section 53BU. 192 Interfering with service provider s infrastructure (1) A person must not, without the written consent of a service provider, interfere with a service provider s infrastructure. (Maximum penalty 1000 penalty units) (2) A person must not, without the written consent of a service provider, build over, interfere with access to, increase or reduce the cover over, or change the surface of land in a way causing ponding of water over an access chamber for, a service provider s infrastructure. (Maximumm penalty 500 penalty units) 53 BU Requirement to consult if water infrastructure affected (1) The public entity must give the distributor-retailer a notice stating: (a) details of the proposed public entity work; and (b) that the distributor-retailer may, within a stated period, make written submissions to the entity about that proposal. (2) The stated period must not end before 30 business days after the notice is given (3) Before deciding to make the change, the entity must consider any written submission made by the distributor-retailer within the stated period. Careless digging can cause: Death or serious injury to workers and the general public Serious disruption to essential services Inconvenience to utility users (water supply, telecommunications, etc.) Expensive financial losses to the community Project delays Page 4 of 19

5 It may also lead to damage claims and criminal prosecution. 2. Definitions Access Authorised Person Cantilevering Connection Point Demountable Developer Easement Maintenance hole (MH) Maintenance shaft (MS) Non-trafficable areas Inspection Shaft (IS) (Also Lamphole ) Owner Pressure sewer As accesss is required for maintenance purposes and unrestricted entry to the sewer is to be maintained. If the proposal creates a building line to building line scenario, a doorway or rollerr door access is required within the new structure. A person acceptable to, authorised by, or approved by a SEQ Service Provider under Section 45 of Water Supply (Safety & Reliability) Act Structure or beam extended from a wall or foundation to support a balcony or wall. Point of connection between the property connection sewer and the customer sanitary drain. Also called property connection point. Any structure or roof, which can be manually dismantled and removed from its current position by two people within a four hour period. Note: A statement by the structural engineer supporting this will be required, should this option be requested. A person, organisation, local government authority or government authority (other than the Water Agency) carrying out works over easementss or over or adjacent of SEQ Service Providers sewerage assets. A right held by one party to make use of the land of another for certain purposes, such as for access. A chamber with a removable cover which allows human and machine access to a (typically buried) sewer. Also called a manhole. A structure on a sewer between MHs, larger than an inspection shaft, which provides equipment access but not person access to the sewer (can be used as an alternative to MHs). Areas not subject to vehicular traffic. A structure on a sewer between MHs or at the end of a sewer line which provides access for small equipment such as a small camera or light. Agency, Authority, Board, Company, Controlling Authority, Corporation, Council, Department Individual, Regulator, Utility or other legal entity that owns the land or owns the structure to be located within the road reserve. A pipe into which sewage is pumped directly from a property and then transported under pressure to a sewage treatment facility or a conventional gravity sewer. Pressure reticulation sewers may be located on private property or in the road reserve. Page 5 of 19

6 Property connection sewer Residence Sewer Sewer rising main Trafficable areas Vacuum sewer 3. Abbreviations A short sewer owned and operated by a SEQ Service Provider that terminates within the property to be serviced. It connects the sewer and the customer sanitary drain and in some cases a vertical riser. Detached or attached dwelling, no greater than 2 stories high. Pipe or other construction, usually buried, designed to carry sewage from more than one source to a point of discharge or treatment. A pipe through which sewage is pumped generally rising from the pumping station to the point of discharge into the receiving sewer. Sewer rising mains are usually located in the road reserve. Also called a sewer pressure main. Areas subject to vehicular traffic. A pipe into which sewage is drawn and then transported under vacuum to a sewage treatment facility or a conventional gravity sewer. Vacuum reticulation sewers are usually located in the road reserve. CCTV kg m mm m 2 min UPVC o Closed-circuit television kilogram metre millimetre Square metre minimum unplasticised polyvinyl chloride degree NOTE: Unless otherwise stated, Diameter is the nominal inside of the pipe. Page 6 of 19

7 4. Guidelines for different circumstances Item Maintenance holes and inspection shafts (to be opened by SEQ Service Providers authorised person only, where deemed necessary) BOAA-S1 Drawing Sewer 225 mm 1. All works 2. All works Construction over maintenance holes is not permitted, as access is required. Construction over maintenance holes and inspection shafts requires a minimum horizontal clearance of: m from the edgee of the cover surround, or - 1.3m from the centre line of the sewer, (whichever is less). Footings/foundations must extend a minimum depth to the angle of repose to the invert level of the sewer, to ensure that no additional load will be placed on the sewer and maintenance hole and inspection shafts by the structure. Maintenance hole cover levels must match new surface levels, where excavation works are applicable (work to be carried out by SEQ Service Providers authorised person). Access is required from street frontage to MH around outside of buildings; 1m wide unobstructed vertical clearance, opened to the sky. Make application to relevant SEQ Service Provider. Complete Form 1 only. Construction over and adjacent to sewers is generally not permitted by SEQ Service Providers. Redesign of structure or relocation of the sewerage asset is the preferred option. Any approval will be in very extreme circumstances and under very strict guidelines. They could include, but is not limited to: CCTV inspection, An assessment of it structural condition Appropriate rehabilitation or protection or replacement works undertaken as directed by SEQ Service Providers. Page 7 of 19

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9 Item Property connection sewer servicing own or adjoining property BOAA-S2 Drawing Easements reserved for sewerage purposes either containing the SEQ Service Provider s asset or 3. All works Excludes items 11, 12 & All works Construction over a property connection sewer servicing own or adjoining property or the connection point, is not permitted. A minimum horizontal clearance of 1.0 m from the closest edge of the building and the property connection sewer must be maintained. No additional load is to be placed on the sewer. Footings/foundations must extend a minimum depth to the angle of repose to the invert level of the sewer, to ensure that no additional load will be placed on the sewer by the structure. Note: Where the sewer is less than 1.0 m horizontally from the edge of the proposed foundation, foundations are to be extended to the invert level of the sewer. Height clearance (permitted under eaves and full structural cantilevers only). Height clearance equired (unless demountable) to provide access and clearance for operating maintenance plant and equipment. Height clearance table Sewer depth Minimum height to invert (m) clearance above floor level (m) >2.8 Depth to invert of the sewer Access is required from street frontage to MH around outside of buildings; 1m wide unobstructed vertical clearance, opened to the sky. Construction of permanent structures is NOT permitted within a SEQ Service Providers easement. Driveways, letter boxes, landscapes, retaining walls < 1.0m high (excluding masonry) are permitted. Page 9 of 19

10 Item not BOAA-S3 Drawing 5. Garages Sheds (greater than 10m 2 ) Home workshops (colourbond, timber, brick or concrete construction) Includes items 1, 3,4 & 5 Construction over or within 1.5 m of concrete, asbestos cement, earthenware, Ultra-Rib PVC, polypropylene pipes is not permitted. Only single storey construction is permitted. The structure must be independently supported, or demountable when attached to another structure. A structurally independent roof must be provided when attached to a dwelling. Where pad footings are not structurally acceptable, the footings/foundations must extend a minimum depth to the angle of repose to the sewer, to ensure that no additional load will be placed on the sewer by the structure. Driven piles are not permitted. A minimum horizontal clearance of 1.0 m between the proposed structure/foundation/pier and the outside edge of the sewer must be maintained. Slab foundations traversing the sewer main must maintain a minimum vertical clearance of 300mm between the underside of the floor slab and the outside surface of the sewer. Height clearance (permitted under eaves and full structural cantilevers only). Height clearance equired (unless demountable) to provide access and clearance for operating maintenance plant and equipment. Height clearance table Sewer depth Minimum height to invert (m) clearance above floor level (m) >2.8 Depth to invert of the sewer Page 10 of 19

11 Item Height clearance for access through garages and sheds must be s minimum 2.8 m. Access is required from street frontage to MH around outside of buildings; 1 m wide unobstructed vertical clearance, opened to the sky. BOAA-S3 Drawing 6. Carports Sheds (less than 10m 2 ) Pergolas Verandas Gazebos Sails Decking. Includes items 1, 3 & 5 Note: If it is proposed to build over the sewer, the construction of the concrete floor is to be of non-structural type (infill only), which if required to be removed would not affect the integrity of the structure. Structures must be independently supported, or demountable when attached to another structure. Carports must be open on a minimum of two sides. Pad footings/foundations are permitted. A minimum horizontal clearance of 1.0 m between the proposed structure/foundation/pier and the outside edge of the sewer must be maintained. Driven piles are not permitted. Access is required from street frontage to MH around outside of buildings; 1m wide unobstructed vertical clearance, opened to the sky. Note: If it is proposed to build over the sewer then construction of the concrete floor is to be non-structural type (infill only), which if removed would not affect the integrity of the structure. Page 11 of 19

12 Item BOAA-S4 Drawing 7. Residences Includes items 1,3 & 5 Residences maybe permitted to be constructed over sewers provided the sewer has been inspected, assessed and rehabilitated as necessary (see Item 2). Residences are not permitted to be constructed over property connection points and maintenance holes (see Item 3). Where it is proposed to construct a residence over a sewer refer to SEQ Service Provider for requirements A minimum horizontal clearance of 1.0 m between the proposed structure/foundation/pier and the outside edge of the sewer must be maintained. Footings/foundations must extend a minimum depth to the angle of repose to the invert level of the sewer, to ensure that no additional load will be placed on the sewer by the structure. Driven piles are not permitted. BOAA-S4 Drawing 8. Eaves Cantilevers on buildings other than ground floors. Includes items 1, 3, 4 & 5 Access is required from street frontage to MH around outside of buildings; 1m wide unobstructed vertical clearance, opened to the sky. Height clearance required (unless demountable) to provide access and clearance for operating maintenance plant and equipment. Height clearance table Height clearances where eaves finish closer than 600mm from the edge of the sewer Sewer depth Minimum height to invert (m) clearance above floor level (m) >2.8 Depth to invert of the sewer Access is required from street frontage Page 12 of 19

13 Item BOAA-S5 Drawing 9. Fences Retaining walls Includes items 1, 3, 4 & 5 to MH around outside of buildings; 1m wide unobstructed vertical clearance, opened to the sky. Timber or light weight construction A minimum horizontal clearance of 1.0 m between the proposed structure/foundation and the outside edge of the sewer must be maintained. A minimum horizontal clearance of 1.0 m between the posts of the fence and the outside edge of the sewer must be maintained where the fence is traversing the sewer. Brick, stone and other similar materials. Footings/foundations must extend a minimum depth to the angle of repose to the invert level of the sewer, to ensure that no additional load will be placed on the sewer by the structure. Foundations traversing the sewer must maintain a minimum vertical clearance of 600 mm to the outside edge of the sewer. Driven piles are not permitted. Retaining walls must traverse the sewer at a 90 o + 15 o or engineering design computations may be required. The maximum depth of fill permitted to be placed over the sewer is 3.0 m. A minimum cover over the sewer of 600 mm must be maintained in nonmm in trafficable areas and 900 trafficable areas. Retaining walls (structures) shall be designed to enable physical access to the sewer main without compromising its structural integrity of the wall. Maintenance hole/inspection shaft cover levels must match the new surface level where applicable (work must be carried out by a SEQ Service Provider Page 13 of 19

14 Item authorised person). Item BOAA-S6 Drawing BOAA-S7 Drawing 10. Swimming pools and spas. Includes items 1, 3, 4 & Driveways Paving Storage areas Vehicle parking areas Above ground (demountable) A minimum cover of 600mm over the sewer must be maintained. In-ground In-ground swimming pools and spas are not generally permitted to be constructed over sewers. Where it is required to construct a pool over a sewer refer to SEQ Service Providers for requirements. A minimum horizontal clearance of 1.0m between the proposed swimming pool/spa and the outside edge of the sewer must be maintained. No additional load is to be placed on the sewer. Driven piles are not permitted. Access is required from street frontage to MH around outside of buildings; 1 m wide unobstructed vertical clearance, opened to the sky. Residential driveways and paving A minimum cover over the sewer of 750 mm must be maintained. Commercial/industrial driveways and paving Maintenance hole/ inspection shaft cover levels must match the new surface level where applicable (work is Page 14 of 19

15 Item 12. Excavation and landscaping Includes items 1 & Utilities (Gas and Electricity) Includes to be carried out by an authorised person). Where maintenance holes/inspection shafts exist, Class D covers to comply with SEQ Service Providers requirements are to be fitted (any alteration works necessary are to be carried out by an authorised person at the owner s expense). No additional load is to be placed on the sewer main by the works. A minimum cover over the sewer of 900 mm must be maintained. Consent is not required for the planting of trees, shrubs and gardens. Please consider the type of trees to be planted. Consent is required for the placement of rockeries (constructed with rocks weighing more than 25kg) and other garden features (larger than 1.0 m in any dimension). The depth of fill permitted to be placed over the sewer must not increase the depth to invert beyond 5.0 m and be placed without the use of heavy compaction equipment. A minimum cover over the sewer of 600 mm must be maintained in nontrafficable areas and 9000 mm in trafficable areas. Maintenance hole / inspection shaft cover levels must match the new surface levels where applicable (work to be carried out by an authorised person). Services are to traverse the sewer at a 90 o + 15 o. Services traversing the sewer must maintain a minimum vertical clearance Page 15 of 19

16 Item BOAA-S8 Drawing Telecommunications and property sewers/drains 14. Commercial Industrial Public Multi-unit and high rise apartment buildings Sport stadiums Transport terminals and the like. Includes items 1, 3, 4 & 5 as per Table 4.2 of WSAA Sewerage Code of Australia 2002 and the SEQ Amendment to WSAA Services parallel to the sewer must maintain a minimum horizontal clearance as per Table 4.2 of WSAA Sewerage Code of Australia 2002 and the SEQ Amendment to WSAA No additional load is to be placed on the sewer by the services. Buildings may be permitted to be constructed over sewers provided the sewer has been inspected, assessed and rehabilitated as necessary (see Item 2). Buildings are not permitted to be constructed over property connection points and maintenance holes. Where it is proposed to construct a building over a sewer, refer to SEQ Service Providers for requirements (see Item 2). Construction is permitted adjacent to sewers subject to: A minimum horizontal clearance of 1.0 m between the proposed structure/foundation/pierr and the outside edge of the sewer must be maintained. Footings/foundation must extend a minimum depth to the angle of repose to the invert level of the sewer, to ensure that no additional load will be placed on the sewer by the structure. Access is required from street frontage to MH around outside of buildings; 1 m wide unobstructed vertical clearance, opened to the sky. 15. Telecommunication and electrical transmission poles A minimum horizontal clearance of 1.0 m between the foundations and the outside edge of the sewer must be Page 16 of 19

17 Item and towers maintained. Footings/foundations must extend a minimum depth to the angle of repose to the invert level of the sewer, to ensure that no additional load will be placed on the sewer by the structure. Driven piles are not permitted. 5. Drawings SEQ-BOAA-S1 SEQ-BOAA-S2 SEQ-BOAA-S3 SEQ-BOAA-S4 SEQ-BOAA-S5 SEQ-BOAA-S6 SEQ-BOAA-S7 SEQ-BOAA-S8 Garages, sheds and carports Retaining walls and fences Pools and spas Driveways and paving Utilities Residencess and eaves Maintenance Hole/Shaft clearance requirements Property Connection points Page 17 of 19

18 Appendix A CONDITIONS OF CONSENT FOR APPROVAL TO: BUILD OVER OR ADJACENT TO AN SEQ SERVICE PROVIDER S ASSET Property Address: Approval for the construction of any building or structure over or within 1.0 m of a SEQ Service Provider s Asset is conditional on the following standard conditions of consent: 1. The Owner shall make himself/herself aware of the terms and conditions of this consent. 2. These standard conditions form part of the approval for the construction of the approved building or structure over or within 1.0 m of the SEQ Service Provider s asset and shall be read in conjunctionn with: a) Special conditions as detailed in correspondence dated (delete if special conditions are not applicable) b) The approved plan showing the and SEQ Service Providers endorsement. 3. The Owner permits the SEQ Service Provider and their employees, authorised agents and contractors to enter into and upon the land and/or the building and structures contained on the land, for the purpose of inspecting, constructing, maintaining or repairing any SEQ Service Provider s asset, and if necessary for that purpose to excavate through any part of the building or structure for which approval has been granted. 4. The Owner accepts sole responsibility for and releases the SEQ Service Provider, their employees, authorised agents and contractors in respect for all injury, loss or damage which may be sustained by the approved building and structures or any other property including the property of any person, and any illness, death or injury of any person as a result of works carried out by the SEQ Service Provider and their employees, authorised agents and contractors for the purpose of inspecting, constructing, maintaining or repairing any SEQ Service Provider s asset, beneath or in the vicinity of the building or structure except to the extent caused by the negligence of the SEQ Service Provider, their employees, authorised agents and contractors. 5. The Owner accepts sole responsibility for and releases the SEQ Service Provider, their employees, authorised agents and contractors in respect of all injury, loss or damage which may be sustained by the SEQ Service Provider s asset, or any other property, including property of any person, and any illness, death of any person, as a result of the approved building or structure having been constructed over or within 1.0 m of the SEQ Service Provider s asset. 6. The Owner indemnifies and shall keep indemnified the SEQ Service Provider against all actions, claims, suits and demands losses, damages, costs and expenses of any kind, Page 18 of 19

19 arising out of or incidental to the construction of and/or retaining the approved building or structure over or within 1.0 m of the SEQ Service Provider s asset and any works carried out by the SEQ Service Provider referred to in clause 4 except to the extent caused by the negligence of the SEQ Service Provider, their employees, authorised agents and contractors. 7. The Owner accepts full responsibility for the structural sufficiency of the approval building or structure and its footings, having regard for the presence of the SEQ Service Provider s asset. 8. Where a building control authority requires that a pier and beam type footing system is constructed to support the building or structure, such pier and beam footings shall not involve the use of impact driven piles and/or structures cantilevered over the SEQ Service Provider s asset. 9. Any deviation from the approved plans will require a further application to be submitted for consideration. Such amended proposals will be considered on the merits of the application and may or may not be approved by the SEQ Service Provider. 10. The Owner agrees to disclose the existence of, and conditions of, this consent to intending purchasers or mortgagees of the land and/or the building and structure contained on the land. 11. This agreement shall be binding on all subsequent Owners of the land and/or the approved building or structure contained on the land. 12. It is the Owner s responsibility to comply with all conditions of this consent. Failure to comply will invalidate the consent and may render the Owner liable for prosecution as provided for in the Water Supply (Safety & Reliability) Act This consent does not constitute a building permit or a planning permit, as may be required by the Building Code of Australia, and the various building ordinances and by-laws of the State and the Local Government in which the land is situated. Page 19 of 19