Concrete Floor Level Tolerances Nz

The maximum permitted surface deviation is 3 mm in any 3 m of length.

Concrete floor level tolerances nz.

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. Minimum floor level for a site below the road level. 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.

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. E2 as1 also gives a minimum threshold height of 100 mm at an opening onto a waterproof deck. The tolerance is based on the specified interior finish u2 floated u3 trowelled or u11 ground finish. 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.

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. Suspended floor framing and support tolerances. Concrete nz covid 19 update together we can slow the spread with auckland at alert level 2 and the rest of new zealand at level 1 resources have been updated. The new zealand concrete contractors association provides its members with leadership advocacy professional development promotion and industry partnering.

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. The specification tolerances with respect to colour and physical irregularities are tabulated and vary somewhat depending on location and end use.