Browse Forums Building Standards; Getting It Right! 1 Jun 04, 2020 8:21 pm hi I am reading the tolerance guide and it says "The overall deviation of floor level to the entire building footprint shall not exceed 20 mm." I think the "floor level" should be a building section/elevation matter, and "entire building footprint " should be a site plan/floor plan metter. how could a floor level deviate from a building footprint? could anyone here shed some lights on this? thank you very much!! Re: concrete slab level tolerance 2Jun 06, 2020 9:21 am seutaojiang hi I am reading the tolerance guide and it says "The overall deviation of floor level to the entire building footprint shall not exceed 20 mm." I think the "floor level" should be a building section/elevation matter, and "entire building footprint " should be a site plan/floor plan metter. how could a floor level deviate from a building footprint? could anyone here shed some lights on this? thank you very much!! seutaojiang What stage are you at DA, BA,Building Inspections, Maintenance, Structural ? In order to set out the design, monitor the build data you need 3D Bim Co=ordinates ( excuse the pun) Also required -> tending to a must are laser measuring tools and a better understanding of whats happening. More information require, the better the information the better the reply and it also helps others Cheers Chris Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: concrete slab level tolerance 3Jun 06, 2020 6:57 pm seutaojiang hi I am reading the tolerance guide and it says "The overall deviation of floor level to the entire building footprint shall not exceed 20 mm." I think the "floor level" should be a building section/elevation matter, and "entire building footprint " should be a site plan/floor plan metter. how could a floor level deviate from a building footprint? could anyone here shed some lights on this? thank you very much!! It simply means that at any two points anywhere across the entire floor plan of the building the maximum difference should be no more than 20mm. So if you can find the low point and high point on the slab it will be no more than 20mm. Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: concrete slab level tolerance 5Jun 07, 2020 2:44 pm adrian20 Wow here in SA it's no more than 10mm over 2m My whole slab is bumpy and there's packers under the frame everywhere. Adrian the tolerances differ from 2 metres to the entire floor level. In Victoria the guide for standards and tolerances states “Levelness of concrete floors Except where documented otherwise, new floors are defective if within the first 24 months of handover they differ in level by more than 10 mm in any room or area, or more than 4mm in any 2 m length. The overall deviation of floor level to the entire building footprint shall not exceed 20 mm. “ I wonder if 10mm over 2 meters could cause some issues if installing engineered flooring. Re: concrete slab level tolerance 6Jun 27, 2020 3:34 pm Gaudi adrian20 Wow here in SA it's no more than 10mm over 2m My whole slab is bumpy and there's packers under the frame everywhere. Adrian the tolerances differ from 2 metres to the entire floor level. In Victoria the guide for standards and tolerances states “Levelness of concrete floors Except where documented otherwise, new floors are defective if within the first 24 months of handover they differ in level by more than 10 mm in any room or area, or more than 4mm in any 2 m length. The overall deviation of floor level to the entire building footprint shall not exceed 20 mm. “ I wonder if 10mm over 2 meters could cause some issues if installing engineered flooring. you can always screed floor if your slab tolerance is not enough (at the expense of your concreters, ideally) and then you can install any flooring. Machined cement screed is very easy and fast process, experienced team can easily screed up to 300 sqm a day. You will lose 20-30 mm of your ceiling height though. i inspect..there is no construction tolerance or building tolerances. Your option to instruct council with your surveyors report as they would have possibly had to obtain… 9 5230 7 1847 The concreter will take and reuse. In my case I bought structural LVLs and scraped them back and used them as joists. 1 3524 |