Browse Forums Building A New House 1 Nov 27, 2014 11:15 pm Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Just need some advice on this slab. This is our slab at the porch... So our inspector said this should be fixed, obviously. Our builder said that this is deeper than the required 100mm so it shouldn't matter. And when we get our driveway it will be covered as well, so shouldnt cause any structural defects. Our builder said that they could just patch it up... Any suggestions as to what should be done about this ? Cheers Re: Porch slab cracked 2Nov 28, 2014 9:36 pm Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ The crack is on the left side facing garage. Not seen in the first photo but just to gone you an idea what it looks like overall. Well I have no idea what the foam is. For soil movement ? We plan to put decking on it afterwards.. Re: Porch slab cracked 3Nov 30, 2014 8:29 am Re: Porch slab cracked 4Dec 07, 2014 11:02 pm Hi Guysd, The foam is there is separate the slab from the wall /pier as a control joint just like a masonry articulation joint which are seldom placed beside the windows they appear under (as required). This foam will stop the slab adhering to the wall / pier. It is good workmanship. The crack however might be insignificant but keep monitoring it I suggest. Difficult to assess even from good photos without specs for the slab. Up to 2mm cracks are permitted even in house floor slabs in Victoria, good luck and cheers, Leonardo_23 Re: Porch slab cracked 5Dec 07, 2014 11:48 pm The crack is of little structural concern and unlikely to cause any issue in the location it is in. It would be good practice for the builder to at least patch it for you though. They could grind it open then fill it with a cementitious epoxy like kf2. www.buildwestconsultants.com Re: Porch slab cracked 6Dec 10, 2014 7:20 am Thanks for the replies. We are having our driveway done so that part will hopefully be covered anyway, just want to make sure there is no issue with the slab.. Re: Porch slab cracked 7Dec 10, 2014 8:23 am building inspector The crack is of little structural concern and unlikely to cause any issue in the location it is in. It would be good practice for the builder to at least patch it for you though. They could grind it open then fill it with a cementitious epoxy like kf2. http://www.buildwestconsultants.com Are you not worried that the front of the porch is dropping away? Agree it not a problem in current state but it certainly highlightw there is an issue some where right? If the crack opens just 1mm what does this equate to at the 3 meter ceiling height? Re: Porch slab cracked 8Dec 10, 2014 5:17 pm B STAR building inspector The crack is of little structural concern and unlikely to cause any issue in the location it is in. It would be good practice for the builder to at least patch it for you though. They could grind it open then fill it with a cementitious epoxy like kf2. [Edit: Advertising links removed by moderator] Are you not worried that the front of the porch is dropping away? Agree it not a problem in current state but it certainly highlightw there is an issue some where right? If the crack opens just 1mm what does this equate to at the 3 meter ceiling height? My opinion based on the photos is that the movement is most likely from the clay soil evident. Once the ground is consolidated with a driveway any fluctuations should be minimal. if the ground around it is left as is over an extended period of time and it is subjected to an uneven seasonal watering pattern then it could become an issue. Based on the poster intimating a driveway will be placed there then I would say that scenario is unlikely. Re: Porch slab cracked 9Dec 10, 2014 7:01 pm Poobear The fact the porch slab has been poured independent means there is going to be a crack there of some description. It's purely superficial and of no concern at all. It's things like this and your building inspector not re assuring you that it's not a problem that cause my negativity towards them. Plumbers 'can be' plumbers, made all the worse by self certification which the building surveyor invariably accepts as proof of compliance! The good thing is that you know know. 3 4872 DIY, Home Maintenance & Repair Hi there, I just recently received my new house from my builder. We handed the house to another company to deal with the… 0 8914 Thanks for the insights, that makes perfect sense, and yeah, I will be leaning on the experience of the excavator operator entirely. 6 16159 |