Browse Forums General Discussion Re: My house slab is in wrong size 3Mar 23, 2009 9:09 pm Blog: http://bluemistkids.blogspot.com "Never be afraid to try something new. Remember, amateurs built the ark, and professionals built the Titanic." Re: My house slab is in wrong size 6Mar 23, 2009 9:18 pm vicky_qj Thanks joles! You are always the first person to reply my post! Much appreciated!! How embarrassing! I'm not on here all the time!! I leave you to fend for yourself, figure things out yourself. Terrence Malick Re: My house slab is in wrong size 7Mar 23, 2009 9:25 pm We have a little bit of frame overhang too, but it is within tolerances (can't remember the figure, and can't be bothered digging out the contract!). It's quite common, and as Joles has said, easily fixed! If they are aware of the problem, I wouldn't worry too much, as they have already said they'll fix it. Henley - Wilshire Mk 3 ... I love my house!! Site start: 4th Feb 09 Handover: 10th Sep 09 Blog: http://stormygirlscastle.blogspot.com/ Build Thread: viewtopic.php?t=7166 Re: My house slab is in wrong size 8Mar 23, 2009 10:26 pm It happens all the time. You'd think the concreters would know how to operate a tape measure, but apparently not.... They may have to get the engineers to look at it and advise on what needs to be done. They will probably drill into the existing slab, insert steel rods for reinforcement and then box up and pour the missing section. It isn't usually a big deal, but might take a week or two to organise. Your frame overhang is possibly within tolerances, but the missing section definitely needs to be rectified. Re: My house slab is in wrong size 9Mar 23, 2009 10:40 pm I think that the biggest problems with such a large overhang are : 1) anchoring - there's precious little concrete to drive the bolts into to fix the frame. 2) damp - the plate's underside is exposed to the air, humidity and water without the protection of a damp proof course, so it should be at least H3 treated, H2 isn't enough. I'd never accept such an overhang. Matter of fact I'm having my slab fixed tomorrow, by cutting/grinding the edges to square/size and adding to the concrete on one side. I'm passing the corrected dimension to the frame suppliers, so I'll have a good fit (hopefully). Adding to the slab isn't so simple. By the standards, the addition has to be at least 100mm wide (to make it that wide the slab may have to be cut first), it must be secured by dowels epoxied into the old concrete (my engineer specified N16s every 500mm). Bonding admixture is recommended for the new concrete. If the physical termite barrier has been selected for the house, it needs to be inserted into the joints. All this takes time, costs money, and is a sheety and complex job that the tradies HATE. Took me 3 weeks to find someone to do this for me. Concretors are HOPELESS!! BTW, anybody knows what the tolerance for overhang is ?? My frame supplier told me (irritably) that it's 0!! Chris My father rode a camel, I drive a car, my son flies in a jetliner, his son will ride a camel.Saudi saying Re: My house slab is in wrong size 10Mar 24, 2009 12:35 pm I remember reading in a previous post from a few months ago that the tolerance for frame overhang is 10mm but I can't find the post at the moment. Re: My house slab is in wrong size 11Mar 24, 2009 12:49 pm mrsnrub I remember reading in a previous post from a few months ago that the tolerance for frame overhang is 10mm but I can't find the post at the moment. Tollerance will depend on what size studs they are using. Houses can technically be built with 75 will studs. However you can not drill into or have any tolerance with this size. So i guess if you use 90mm studs then you can overhang 15mm if you dont not drill an holes in it, or dont plane the studs. Chances are that you will have to do one or the other (holes for cables and or planing to straighten wall). So i would not except more than 10mm in worst case provided 90mm studs are used. welcome to learning that colours vary in different lighting conditions. 1 2927 2 31429 there is only 20% difference in concrete strength between 20 mpa and 25 mpa, so check with your engineer first if it fits his calculation tolerances. There are ways to… 6 18339 |