Browse Forums General Discussion 1 Jul 27, 2009 11:28 am Hi I have just discovered this really really helpful forum. thank you to all the contributors. i am going to be a new home owner. and very new to the terms and definitions used in construction. so please beear with me. i just bought a piece of land at tarniet. and am deciding betwen carlisle and NBG I learnt that after chooisng ur builder, one is required to put in a deposit of (eg $1000) to do soil tests and that will determine your concrete slab. it would be helpful to learn the type of slabs as i know the prices vary and also i like to know what is "typical" slab. my land is fairly flat, but ive been told there may be rocks so i wont be grateful if someone can point me to a website explaining the types of slabs. also i am getting my head around this term, "fall" as in the 'the fall of your land is 30mm'. so does that mean the more fall u have the more concrete is need to fill it (that is concrete is need to fill a depth of 30mm)? i've read the definitions but i need to visually see to better understand it which is posted as a link below http://4.bp.blogspot.com/_Fsw__nrllMI/S ... age001.gif images taken from cbtek.com.au. except for the bit in red thank you for any help Re: Classes of concrete slab / and what does fall mean? 2Jul 27, 2009 12:37 pm mulibear Hi I have just discovered this really really helpful forum. thank you to all the contributors. i am going to be a new home owner. and very new to the terms and definitions used in construction. so please beear with me. i just bought a piece of land at tarniet. and am deciding betwen carlisle and NBG I learnt that after chooisng ur builder, one is required to put in a deposit of (eg $1000) to do soil tests and that will determine your concrete slab. it would be helpful to learn the type of slabs as i know the prices vary and also i like to know what is "typical" slab. my land is fairly flat, but ive been told there may be rocks so i wont be grateful if someone can point me to a website explaining the types of slabs. also i am getting my head around this term, "fall" as in the 'the fall of your land is 30mm'. so does that mean the more fall u have the more concrete is need to fill it (that is concrete is need to fill a depth of 30mm)? The classification of your site is determined by the type of material your land is down to a certain depth (ie. sand, loam, clay). The classification ranges from A (stable) which you'd have if it was very sandy material. It then progresses to S (slightly reactive), M (moderately "), H (highly "), E (extremely "). Generally the more clay you have the higher the site classification will be. There is also sub-classes (I wont go into that). The classification of your site will determine the design of your slab. A and S sites have relatively simple slabs consisting of a deeper footing around the outside of the house and your regular 100mm slab in the middle. M, H and E sites all need stiffening beams through the slab to prevent movement and cracking - and will increase the price of your slab. Fall determines the slope of your block, ie. the wall the land falls. If the front of your block is the lowest point, then the block falls to the front. On sloping blocks, you'll either need to get rolled fill (up to 450mm fill) if the slope is minimal or controlled fill (over 450mm fill) if the slope is bigger. You can get the block CUT and FILLED to reduce the amount of fill you need. Simply - you need a flat area to put your slab down on, so the either fill up one side - or cut one side and fill the other. Re: Classes of concrete slab / and what does fall mean? 3Jul 27, 2009 3:05 pm jeraldo The classification of your site is determined by the type of material your land is down to a certain depth (ie. sand, loam, clay). The classification ranges from A (stable) which you'd have if it was very sandy material. It then progresses to S (slightly reactive), M (moderately "), H (highly "), E (extremely "). Generally the more clay you have the higher the site classification will be. There is also sub-classes (I wont go into that). The classification of your site will determine the design of your slab. A and S sites have relatively simple slabs consisting of a deeper footing around the outside of the house and your regular 100mm slab in the middle. M, H and E sites all need stiffening beams through the slab to prevent movement and cracking - and will increase the price of your slab. Fall determines the slope of your block, ie. the wall the land falls. If the front of your block is the lowest point, then the block falls to the front. On sloping blocks, you'll either need to get rolled fill (up to 450mm fill) if the slope is minimal or controlled fill (over 450mm fill) if the slope is bigger. You can get the block CUT and FILLED to reduce the amount of fill you need. Simply - you need a flat area to put your slab down on, so the either fill up one side - or cut one side and fill the other. now i understand thank you so much for explaining the terms to me. appreciate it very much.! I've got a challenge here. 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