Water Supply & Sewerage Design · Residential complex

Water Supply and Sewerage Design: Residential Complex with 4 Buildings

Water supply, sanitary sewerage and stormwater design for a four-building residential complex, coordinated internally and across the site in 2D and 3D in ArchiCAD.

3D ArchiCAD model of cold and hot water supply for two buildings in a four-building residential complex, with basement plant, tanks and incoming supply

3D ArchiCAD model of cold and hot water supply across the remaining buildings of the four-building residential complex — 3D water supply model: remaining buildings of the four-building complex

3D ArchiCAD model of sanitary sewerage and stormwater stacks for four buildings, with site collectors, manholes and discharge — 3D sanitary and stormwater model: four-building stacks, collectors, manholes and discharge

3D ArchiCAD model of sanitary sewerage and stormwater drainage across the residential complex site, with stacks, collectors and manholes — 3D sanitary and stormwater model: site drainage across the residential complex

The challenge

A residential complex of four buildings needed a complete water supply, sanitary sewerage and stormwater package that would serve each building reliably and still work as one site: shared external networks, coordinated internal installations, and pipe sizes that did not waste money by oversizing every run to the largest building.

Our approach

•Modelled cold and hot water, sanitary stacks and stormwater for all four buildings in ArchiCAD so internal layouts and external collectors came from a single coordinated model, rather than four separately drafted packages that would clash on site.
•Ran hydraulic calculations and sized pipes from the actual design flows, then trimmed routes and diameters where a shorter, smaller layout still met residual pressure and self-cleansing velocity.
•Issued 2D drawings, 3D coordination, construction details and a bill of quantities so the package could be submitted, priced and built from without further interpretation.

Scope of work

•Water supply system design for the four buildings
•Sanitary sewerage system design
•Stormwater drainage system design
•Hydraulic calculations and system dimensioning
•Pipe sizing and flow calculations
•Coordination of internal and external installations
•2D technical drawings and 3D modelling in ArchiCAD
•Detailed technical drawings and installation layouts
•Optimisation of pipe routes and system layouts to reduce unnecessary material and construction costs
•Bill of quantities and material specifications
•Technical documentation for project submission and approval
•Construction details to support accurate on-site installation

Outcome

•A coordinated 2D/3D package covering water, sanitary and stormwater for all four buildings, from internal installations to external site networks.
•Pipe routes and diameters sized from calculated flows, keeping material use in proportion to the complex.
•Design ready for project submission, approval and on-site installation.

SoftwareArchiCAD

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