Performance Solution Case Studies
Real performance solutions from our own files, anonymised. Each case study shows the NCC clauses involved, the problem, how we solved it and what we learned. Every report is prepared by a registered building surveyor and assessed against the relevant Performance Requirements.
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First floor addition with no eaves gutters
A first floor addition was designed with no eaves gutters, shedding water onto the guttered roof below. A performance solution under H2P1 showed the roof drainage works as a system.
Below ground rumpus room: retaining wall as an external wall
An existing retaining wall became the external wall of a below ground rumpus room. Layered waterproofing and drainage met H2P1, H2P2 and H2P3 where freeboard and fall away could not.