Water Supply & Sewerage Design · Residential building

Water Supply and Sewerage Design: 9-Storey Building with Basement

Water supply, sanitary sewerage and stormwater design for a nine-storey building with basement parking, coordinated in 2D and 3D in ArchiCAD in five days.

3D ArchiCAD model of cold and hot water supply for a nine-storey building, with basement tank, pump, hydrant and incoming supply

3D ArchiCAD model of sanitary sewerage and stormwater stacks through nine storeys, with basement collectors and discharge manholes — 3D sanitary and stormwater model: stacks, basement collectors and discharge

Typical floor plan showing cold and hot water distribution to apartments — Typical floor: cold and hot water to apartments

Typical floor plan showing sanitary sewerage from apartment bathrooms and kitchens — Typical floor: sanitary sewerage from bathrooms and kitchens

Basement parking plan showing incoming water supply, storage tanks and distribution — Basement parking: incoming supply, storage tanks and distribution

Basement parking plan showing sanitary sewerage and stormwater drainage to manholes — Basement parking: sanitary and stormwater drainage to manholes

Site drainage plan showing perimeter drains around the building and stormwater discharge — Site drainage: perimeter drains and stormwater discharge

The challenge

A nine-storey residential building, including ground floor and basement parking, needed a complete water supply, sanitary sewerage and stormwater design that would hold pressure at the top floor, drain the parking slab and apartments cleanly, and not oversize pipework that the client would then have to pay to install.

Our approach

•Modelled cold and hot water, sanitary stacks and stormwater together in ArchiCAD, from basement plant (tank, pump, hydrant and incoming supply) through every floor to site discharge, so parking, apartments and roof drainage sat in one coordinated model.
•Ran hydraulic calculations and sized pipes from the actual design flows, then trimmed diameters where a smaller layout still met residual pressure and self-cleansing velocity.
•Issued typical-floor layouts, basement parking drawings, installation details and a bill of quantities so the package could be priced and built from without further interpretation.

Scope of work

•Water supply system design
•Sanitary sewerage and stormwater drainage design
•Hydraulic calculations and pipe sizing
•2D and 3D technical design in ArchiCAD
•Technical drawings, installation layouts and construction details
•Bill of quantities and material specifications
•Design optimisation to reduce construction and material costs

Outcome

•A coordinated 2D/3D package covering water, sanitary and stormwater from basement parking and plant through nine storeys to site discharge.
•Pipes sized from calculated flows rather than rules of thumb, keeping material use in proportion to the building.
•Design completed in 5 days, ready for on-site implementation.

SoftwareArchiCADDuration5 days

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