Water Supply & Sewerage Design · Residential house

Water Supply and Sewerage Design: Ground Floor + First Floor House

Water supply, sanitary sewerage and stormwater design for a ground-floor plus first-floor house, coordinated in 2D and 3D in ArchiCAD in four days.

3D ArchiCAD model of cold and hot water supply for a two-storey house, with boiler and incoming water connection

3D ArchiCAD model of sanitary sewerage and stormwater drainage with ventilation stacks, manholes and site discharge — 3D sanitary and stormwater model: stacks, ventilation, manholes and site discharge

Ground floor plan showing cold and hot water pipework to kitchen, bathrooms and boiler — Ground floor: cold and hot water to kitchen, bathrooms and boiler

First floor plan showing cold and hot water pipework to bathrooms — First floor: cold and hot water to bathrooms

First floor plan showing sanitary sewerage from bathrooms — First floor: sanitary sewerage from bathrooms

Site plan showing perimeter drains, sanitary and stormwater collectors and manholes around the house — Site drainage: perimeter drains, sanitary and stormwater collectors and manholes

The challenge

A two-storey house needed a complete water supply, sanitary sewerage and stormwater package that would work on a small residential plot: reliable pressure at every tap, gravity drainage that could actually be built, and pipe sizes that did not waste money on a building of this scale.

Our approach

•Modelled cold and hot water, sanitary stacks and stormwater together in ArchiCAD so the boiler, floor layouts and site discharge came from a single coordinated model.
•Calculated design flows and sized every pipe from those flows, then trimmed diameters and run lengths where a smaller, shorter layout would still meet residual pressure and self-cleansing velocity.
•Issued installation plans, construction details and a bill of quantities so the contractor could price and build from the same set.

Scope of work

•Water supply system design
•Sanitary and stormwater sewerage design
•Hydraulic calculations
•Calculation of flow rates and pipe diameters
•2D and 3D technical design in ArchiCAD
•Technical details and installation plans
•Bill of quantities and material specifications
•Project optimisation to reduce construction costs

Outcome

•A coordinated 2D/3D package covering water, sanitary and stormwater for the house, from incoming supply and boiler through both floors to site discharge.
•Pipes sized from calculated flows rather than rules of thumb, keeping material use in proportion to a two-storey house.
•Design completed in 4 days, ready for pricing and installation on site.

SoftwareArchiCADDuration4 days

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