18-01-12, 08:30 AM
Phil
A good move. People often think concrete is the way to go, but in reality in most instances concrete just spreads the load over a wide area. On dodgy ground, thin concrete may crack as loads shift with ground movement , or may even start to tip over.For very light domestic loading , tbh, well compacted soil will usually be OK, but clay soil is the issue, as it heaves and shrinks depending on ground water levels. As such , anything on clay should have a good depth of MOT , well compacted( dont use big brick ends etc as it does not form a good crust) , and then ideally a pad of concrete to spread the load over this. But for a simple shed, well bedded paving slabs on a good hardcore layer is OK. Hardcore to be 150mm min, up to whatever ground condition dictates.
A good move. People often think concrete is the way to go, but in reality in most instances concrete just spreads the load over a wide area. On dodgy ground, thin concrete may crack as loads shift with ground movement , or may even start to tip over.For very light domestic loading , tbh, well compacted soil will usually be OK, but clay soil is the issue, as it heaves and shrinks depending on ground water levels. As such , anything on clay should have a good depth of MOT , well compacted( dont use big brick ends etc as it does not form a good crust) , and then ideally a pad of concrete to spread the load over this. But for a simple shed, well bedded paving slabs on a good hardcore layer is OK. Hardcore to be 150mm min, up to whatever ground condition dictates.