Landcom Book 4 Maintenance - WSUD

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Water Sensitive Urban Design Form A – Earthworks and Hydraulic/Functional Structures Purpose: 3) To ensure bulking out, trimming and profiling is in accordance with design specifications (including allowance for 300 mm topsoil and a minimum 300 mm of impervious liner where required). 4) To ensure hydraulic structures associated with the wetland are constructed in accordance with the design specifications. Checklist: Items Checked Satisfactory Action/s (if required) Actions addressed (initial) Bulking out & hard structures As constructed survey of basin base and surrounding bunds, pit crests, inlet and outlet pipes Set out of wetlands is correct (including inlet zone, macrophyte zone, high flow bypass) Base levels are at correct elevation, given the minimum allowances for topsoil and impervious liner (where required) Hold Point - Sign off is required from superintendent and wetland designer before proceeding Bunds and impervious liner Laboratory test results of liner material submitted and adequate Delivery docket of liner material submitted and adequate Delivery docket of liner material supplied 60 Book 4 | MAINTENANCE
Water Sensitive Urban Design Geotechnical engineer certification of in-situ compaction or liner placement Geotechnical engineer certification / sign off of key bunds Hold Point - Sign off is required from superintendent and wetland designer before proceeding Functional and hydraulic functions Inlet and outlet pipes and headwalls correctly set out and at correct level (upstream and downstream ends) Inlet zone connection pit or pipe correct size, location and level Outlet riser connection, location, size and levels correct Bypass weir correct width and level Overflow pit is correct size and crest is at correct level Maintenance pipe and valve installed at correct location and level Maintenance access installed to inlet zone Rock or concrete base constructed to inlet zone Book 4 | MAINTENANCE 61
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Landcom Book 4 Maintenance - WSUD

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