Browse Forums Renovation + Home Improvement 1 Oct 19, 2013 12:25 am Hi, My brothers and I are currently in the process of finalising our plans for lifting/re-stumping our house. However I am having some trouble designing the footing size. Details are: - House will be raised on 75x75 steel posts - Site classification is 'M' - Bore holes during soil testing revealed weathered rock at 300-400mm below ground surface. Now some of you may think ' your lucky'. The weathered rock is suitable for delivering a bearing capacity of 200kpa (well over the recommended 100kpa). However isn't a 300mm deep footing WAY too shallow? What about uplift requirements? My understanding is that the steel post should be buried in the concrete footing to a depth of around 500mm and 300mm wide and 150mm off the bottom with a square plate. We are also planning on laying a full slab down later on (6+ months). Do the footings simply need starter bars for the future works? And if the future slab is to be 100mm thick, does that mean the footings need to be 100mm below the finish slab height to be able to tie them together? Any help would be great! Tom Re: Need help with footings for steel posts! Raising House 2Nov 20, 2013 10:28 pm cornellengineers Does your certifier need your plans signed off by an engineer? Apologies for the delayed response. Just been dealing with planning issues at the moment and have only just got back to the engineering. But yes.. I will require an engineer to sign off on my work at some stage with a Form 15. I'm a civil engineer myself but am not qualified to sign off with an RPQ. My engineering firm doesn't deal with residential. Are you offering?? You’re on the right track, wire brush in a grinder then a zinc rich epoxy primer then a top coat of some sort, like a waterproofing membrane. Raising the concrete would… 1 7031 Hi I am wanting some opinions about the build of a steel shed I am going to get one about 4.5 x 2.5 m steel shed and the height will be about 2.3-2.4m high The one I am… 0 14442 Hi, We have a single story MacDonald Jones house, on a waffle pod slab with steel frame. Are we able to build a second story extension? Other info is we are 900mm from… 0 8471 |