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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Office spiral stair: tapered treads 5 mm short of the minimum going
An office spiral stair was installed with tapered treads about 5 mm short of the D3D14 minimum going. A performance solution under D1P2 avoided rebuilding it.