Browse Forums DIY, Home Maintenance & Repair 1 Aug 14, 2016 12:55 pm Hi Im trying to work out how many cement bags, aggregate and sand mix id need Wanting to do a slab for a shed that is 4.8mx1.3m @ 75mm thick Is anyone able to advise how i calculate this, or even be able to work it out for me? thank you Re: Shed Slab 2Aug 14, 2016 7:31 pm That's around 0.468 cubic m (plan for 0.5m3 which means 1200kg) For a typical mix the proportions are [ul][li]Cement = 1 part.[/li] [li]Sand = 2.5 parts.[/li] [li]Stone or gravel = 3 parts.[/li][/ul] So we are talking about 180kg cement 450kg of sand 540kg gravel +water The Harder You Try - the Luckier You Get ! Web site http://www.anewhouse.com.au Informative, Amusing, and Opinionated Blog - Over 600 posts on all aspects of building a new house. One corner of my shed slab will be directly over a 1400mm diameter concrete soakwell. Is it feasible to fill the soakwell with concrete then lay the shed slab over the… 0 1295 Thanks. Yeh ideally that would have been good, but have progressed too far now. Hoping some well placed internal walls fixed up into the battens will provide some… 2 5854 Hi, I am sheeting the inside of a 5.7 x 8m shed with gyprock. Unfortunately the shed wasn't designed for internal cladding but I have been framing it up as strongly as… 0 3719 |