Concrete Floor Level Tolerances Nz

Adrian cowie who has been publicly critical of the earthquake commission s assessment of floor levels in earthquake affected houses says the ministry tolerances should be questioned.

Concrete floor level tolerances nz.

Concrete slab surface level within 6 months of new branz suggests concrete slabs be level to within 10 mm of the specified floor level in any one room or space. For acceptable hollows or mounds in concrete floor slabs the mbie guide to tolerances materials and workmanship in new residential construction 2015 references nzs 3114 1987 specification for concrete surface finishes part 3. 2 guidance guide to tolerances materials and workmanship in new residential construction 2015 document status this document s status isbn 978 0 478 43380 7 online published may. The specification tolerances with respect to colour and physical irregularities are tabulated and vary somewhat depending on location and end use.

The tolerance is based on the specified interior finish u2 floated u3 trowelled or u11 ground finish. Suspended floor framing and support tolerances. Minimum floor level for a site above the road level. Abrupt deviations are to be less than 3mm in all finishes but should be avoided where carpets and thin tiles are to be used for floor coverings.

By setting a high standard for membership those who employ a member of the nz concrete contractors association to carry out their work can be assured of a high standard of. E2 as1 also gives a minimum threshold height of 100 mm at an opening onto a waterproof deck. Flatness vs levelness for many internal ground floors the most suitable tolerances to be worked to are free movement classifications fm as defined in tr34 by the concrete society a floor is classified as free movement if it can be driven around freely by vehicles such as forklifts without too many obstacles such as columns or walls. Minimum floor level for a site below the road level.

The new zealand concrete contractors association provides its members with leadership advocacy professional development promotion and industry partnering. Concrete slab on ground deviation from prescribed finished floor level 10 mm in any one room or space nzs 3109 surface level 3 mm in any 3 m of length nzs 3109.