Browse Forums General Discussion 1 Sep 11, 2016 9:50 pm I am in the preliminary planning stages of a knock down rebuild and am looking for advice on foundations and sub-floor design. Our block slopes down from the road with a natural gradient of 1:8 (~7 deg). The soil if very clayey. One of the main reasons that we are knocking down is that the current 1940's double brick house has rising damp as the damp course has deteriorated. The current house is build on brick footings that extend the main walls down to ground level and has timber joists/floors. The sub-floor area is generally damp and musty, even though I have added extra ventilation bricks and a extraction fan. I would like to avoid the same issue with the new house. We are planning to have the house ground floor at the front natural ground level and strip footings. The current concept design is ~18m long which results in a ~2.2m drop at the rear. At the rear we would like to build a basement room across the width of the house. Additionally, the garage at the front of the house has a drop of ~0.8m at the rear wall. Is there any advantage of using a suspended slab or Hebel floor over a standard timber (yellow tongue) floor? Is there any practical work that I can do to the exposed sub-foor to minimise the damp? Lay a couple of layers of waterproofing plastic sheeting? For the garage is it best to have a slab on the ground? Building Standards; Getting It Right! 1. optional, you can but normally just use the earth from the main switch board 2. should be enough but the distance determines voltage drop - sparky should work it… 1 28804 dimensions on your original plan are inconsistent and with accurate dimensions (including site plan, upstairs and down) i could make a proper scale drawing with furniture… 3 7497 CDC Housing Code 3 When to apply Floor Area external face of wall vs Gross Floor Area internal face of wall. Reading thru CDC Housing Code 3, lets take a lot 915sqm.… 0 16421 |