D4 Hydraulic
D4.04 Domestic heated water plant and reticulation
D4.01
Design Criteria Design Criteria Considerations Checklist:
Domestic Heated Water Plant and Reticulation Considerations Checklist: • Central domestic hot water system located at Roof Level with a heated water flow and return system located within the individual apartment’s plumbing riser. • The central domestic hot water system will be centralised CO2 heat pump. • All hot water plant is to be electric. Gas powered not accepted. • Solar booster hot water panels subject to available install location. • Thermal pipe lagging in accordance with NCC. • Temperature control devices to be provided for hygiene fixtures. • Each dwelling to be provided with a metered domestic hot water connection from the base building hot water service.
• Compliance with Building Code of Australia • Compliance with Australian Standard AS3500 • Compliance with Local Water Authority requirements
• Compliance with relevant state/territory requirements, for example no new gas connections to residential dwellings in Victoria from 1 January 2024. • uPVC is preferred for all pipework and PVC should be avoided where possible. • Plumbing Fixtures and fittings refer to Housing Choices schedule No. 007.
Sanitary plumbing and drainage Sanitary Plumbing and Drainage Considerations Checklist:
D4.02
Storm water Storm water Considerations Checklist:
D4.05
• Sanitary plumbing and vent systems will be provided to all fixtures and fittings in the wet and kitchen areas such as toilets, sinks, basins and showers etc. Sanitary stacks and relief vent will be located inside services ducts and collected into the drainage system by gravity mains. • Drainage outlets and tundishes will be provided for mechanical condensate drainage and discharge to the sanitary plumbing via trapped connection and/or stormwater drainage system. Domestic Cold Water Reticulation • To be connected to Authority street supply incoming main and requirements for booster pumps, break tanks will be subject to site demands and pressure and flow capacity of existing mains. • The water supply from the main potable water meter assembly is to reticulate domestic cold water throughout the building via risers and with branch take offs at each floor level to service each apartment and any sanitary fixtures/items of equipment. • Pressure reduction and isolation valves will be provided to limit the pressure as required by AS/NZS 3500.1. • Access panels to be provided as required.
• Roof drainage to be provided to all box gutters, eaves gutters and roof drainage outlets and box gutter downpipes designed to 1:100 storm event. • Eaves gutter downpipes designed for 1:20 storm event. • All box gutters to have overflows. • All down pipes to be connected to legal point of discharge via below ground drainage system design by Civil Engineer. • Down pipes will be sewer quality uPVC and HDPE drain where siphonic drainage system is required. Where downpipes pass over apartments or adjacent to noise sensitive areas the uPVC pipes will be insulated with acoustic lagging to comply with NCC and acoustic Engineers requirements. Rain water collection Refer to PART E: Environmentally Sustainable Design of this document for rainwater collection requirements.
D4.03
D4.06
75
Housing Choices Australia | Design Guidelines
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