Browse Forums Building Standards; Getting It Right! 1 Oct 02, 2018 2:00 pm Just had a conversation regarding turning the dpc up the face of the concrete slab on ground in regard to what is required in the BCA /NCC section 3 /3.2 slabs and footings The Concreter’s have not allowed for a turn up and are insisting that it complys as it as engineering drawing , the certifier agrees with me it’s not correct but as Engineer has signed off on it as an engineered solution and when I asked what the actual alternative solution was they can’t answer me there is nothing to stop moisture entering through slab Where do you stand with a situation like this . Thanks Re: Engineered solutions 4Oct 02, 2018 2:36 pm My builder did it for me after I pointed out the exact same thing you did. It's in your contract that they build to code so they have to do it. Re: Engineered solutions 5Oct 02, 2018 4:08 pm sweetswisssteel My builder did it for me after I pointed out the exact same thing you did. It's in your contract that they build to code so they have to do it. The problem I have nobody will speak to me they are all dodging the question Also the dpc is 70 -100 mm short of the external form Boards , all signed off by certifier and engineer It’s a joke Re: Engineered solutions 6Oct 02, 2018 4:41 pm Maybe quietly get your own inspector and engineer to back you up then see what they say, sorry about how they are treating you. Re: Engineered solutions 7Oct 02, 2018 4:58 pm I would tell concreter that "what he thinks is compliant" is NOT enough, there is no logic and enough waterproof protection in what he says and that you would not be paying him for his sub-par job, you can always provide a certifier and, if necessary, independent inspector report with photo evidence, if he wants to bring it on to the tribunal instead of rectifying it. Re: Engineered solutions 9Oct 02, 2018 6:08 pm alexp79 I would tell concreter that "what he thinks is compliant" is NOT enough, there is no logic and enough waterproof protection in what he says and that you would not be paying him for his sub-par job, you can always provide a certifier and, if necessary, independent inspector report with photo evidence, if he wants to bring it on to the tribunal instead of rectifying it. I spoke at great length to the certifier and he agreed with me it non compliant However he said the engineer is happy , I also spoke with construction manager who quoted me As2870- 2011 that if local knowledge deemed it unnecessary they don’t need it Makes a mockery of ncc I asked him what stops moister coming up through slab and he couldn’t answer it’s just BS Re: Engineered solutions 10Oct 02, 2018 8:47 pm Tim65 I suggest you venture down to your local hardware store and get some waterproofing and apply it yourself to the edge of the slab. That is my recommended Engineered solution if you are unable to Turn up The WPM BTW photos also help others Cheers Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Engineered solutions 11Oct 02, 2018 9:39 pm StructuralBIMGuy @Tim65 I suggest you venture down to your local hardware store and get some waterproofing and apply it yourself to the edge of the slab. That is my recommended Engineered solution if you are unable to Turn up The WPM BTW photos also help others Cheers Yes this is my thoughts as well will be doing it over the weekend , just find it so frustrating that they can get away with slack work , can’t belive a engineer is happy to sign this type of practice Off The other problem I have picked up on is cover to Steel or lack of it Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: Engineered solutions 12Oct 02, 2018 10:15 pm Tim, would also - wise old owl that I might possibly be - suggest that you back off a little bit with too frontal an approach with the builder. With these situations it can be much better to take a "how can we fix it, mate" tack. You go in slapping away with your own paint and you'll have buckley's getting any assistance in the future with damp-linked or infestation problems. Right now, it's the builder's site and not an owner's province to move in and do their own work. You've got a long haul ahead of you with the build, don't have the builder classify you as a pain, look for a solution to problems that involves the contractor. But what do I know. Re: Engineered solutions 13Oct 02, 2018 10:58 pm A Performance Solution, formerly known as an Alternative Solution, must meet one of the BCA Assessment Methods and the document certified and signed off by an industry expert in the field. Unfortunately, a Building Surveyor can also use their discretion to sign off on a non compliance and some are known to erroneously refer to this as signing off on a Performance Solution which it isn’t. You should check with your State’s regulatory body for a ruling. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Engineered solutions 14Oct 03, 2018 6:28 am kks Tim, would also - wise old owl that I might possibly be - suggest that you back off a little bit with too frontal an approach with the builder. With these situations it can be much better to take a "how can we fix it, mate" tack. You go in slapping away with your own paint and you'll have buckley's getting any assistance in the future with damp-linked or infestation problems. Right now, it's the builder's site and not an owner's province to move in and do their own work. You've got a long haul ahead of you with the build, don't have the builder classify you as a pain, look for a solution to problems that involves the contractor. But what do I know. As the ss is on holiday I spoke with the certifier and raised a number of concerns I had about the work and asked his opinion , he made enquirers and came back to me This was when I called the construction manager , which in his answer he is correct in what he said and quoted Which I have to accept , it complys , being in the trade and licensed myself i am not going to let things just be done if I feel it’s incorrect I will ask a question which I did in this situation no malice from me just want it right . The other items raised were steel touching the form boards , flat on the ground with no cover and where it had punctured the dpm , where pipe penetrations come through not sealed around correctly If I can see these non compliant items how can a engineer sign off on them to say it’s ok to pour You only have to read on this forum the problems encountered by customers of poor work by builders , if you don’t stand up for yourself who is going to do it for you ? I will be asking if it’s ok for me to go on site to paint the edge at the weekend I would not just go and do it Moisture and water penetration are the biggest problems in building defects and to carrying out work to prevent it can save big dollars down the line , prevention is better than cure in my book Re: Engineered solutions 15Oct 03, 2018 8:36 am Tim65 StructuralBIMGuy @Tim65 I suggest you venture down to your local hardware store and get some waterproofing and apply it yourself to the edge of the slab. That is my recommended Engineered solution if you are unable to Turn up The WPM BTW photos also help others Cheers Yes this is my thoughts as well will be doing it over the weekend , just find it so frustrating that they can get away with slack work , can’t belive a engineer is happy to sign this type of practice Off The other problem I have picked up on is cover to Steel or lack of it Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Thanks for the photo I suggest you make a deduction from the final payment for the waterproofing you have purchased No Doubt, the builder will make a 20 fold deduction from the trade payment claim In regards to inadequate cover are you in a coastal , corrosive & aggressive environment, More info required? BTW, Stick to your guns, this engineer is on your side & please let me know how you go... Cheers Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Engineered solutions 16Oct 04, 2018 6:10 am StructuralBIMGuy Tim65 StructuralBIMGuy @Tim65 I suggest you venture down to your local hardware store and get some waterproofing and apply it yourself to the edge of the slab. That is my recommended Engineered solution if you are unable to Turn up The WPM BTW photos also help others Cheers Yes this is my thoughts as well will be doing it over the weekend , just find it so frustrating that they can get away with slack work , can’t belive a engineer is happy to sign this type of practice Off The other problem I have picked up on is cover to Steel or lack of it Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Thanks for the photo I suggest you make a deduction from the final payment for the waterproofing you have purchased No Doubt, the builder will make a 20 fold deduction from the trade payment claim In regards to inadequate cover are you in a coastal , corrosive & aggressive environment, More info required? BTW, Stick to your guns, this engineer is on your side & please let me know how you go... Cheers No we are not coastal , Hunter vally The site was classed as H1 there is a lot of clay also N3 wind rating I really don’t see logic in a engineer signing Off on a technicality in this type of ground regarding the dpm , if it was free draining I would understand They poured slab yesterday , I managed to have a quick look at Steel cover from what I could see we had a min of 20-25 in the places where it was in contact with form boards , so they had attempted to rectify it I suppose Pipe penetrations were not taped up correctly I have lots of photos and I put my concerns in an e mail so it’s documented Time will tell , very frustrating on my part as I pride my self on the standard of work I do I have been in construction for 30 plus years Thanks for your comments In the end, two pieces of treated timber (20mm thick) were bolted onto the joists and planed when there was too much sticking out. Passed inspection. 13 7745 I would find out how deep your clay base is and depending on the depth install a cut off drain which is more than a normal agi drain. Where the neighbouring walls is… 2 3141 Engineering timber is certainly a less fuss option, times cheaper to supply and install and better withstands humidity. 1 15886 |