Please note that recession planes are measured from the minimum floor level or natural ground level if this is higher for residential properties within the flood management area for activities permitted under rule 5 4 1 1 p1 p4 new buildings and additions that meet the required minimum floor levels.
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.
Areas within 1 5 meters of walls columns or.
Other tolerances in this section dictate the maximum deviation from the planned location of the top surface elevation and the cross sectional dimensions of piers and footings.
Top of timber pile above finished ground level 300 mm or 150 mm with dpc top of concrete pile above finished ground level 150 mm with dpc top of foundation wall above finished ground level 225 mm suspended timber floor construction bottom of cladding 200 mm suspended timber floor construction underside of joists i e.
Floor level tolerances set by the ministry of business innovation and employment are flawed and used too rigidly a christchurch registered surveyor says.
Suspended floor framing and support tolerances there are a number of tolerance limits given for suspended floors.
While set out tolerances are given in nzs 3604 2011 timber framed buildings tolerances for the slab surface are not.
Determining the level of foundation damage and hence the degree of foundation structural repair or replacement required involves consideration of the extent and interaction of three aspects.
Mbie 5 mm maximum deviation in any 10 m length.
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.
Flat and straight to within 6 mm for every 3 m of length.
10 mm in total for lengths over 10 m.
Section 4 is the longest part of aci 117 covering tolerances for cast in place concrete for buildings including walls floors and slabs.
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 2015 ministry of business innovation and employment po box 10 729 wellington new zealand.
Branz level to within 5 mm within a single room or space.
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.
