dry-mix shed base concrete
We want to lay a concrete shed base and extend it into a bit of a path. it would end up approx. flag shaped i.e. a rectangle with a longer thinner section coming off as the path. a friend suggested making a wooden frame, filling with some kind of dry mix, levelling & compacting then spraying with water. something he had done in his garden.. Our concrete calculator allows you to accurately work out the amount of concrete you'll need for your project. simply add the measurements for your concrete order to the relevant shapes above (you only have to fill in the shape/s you want to use) you can build up a concrete calculation for complicated areas by adding additional shapes of each type.. Tamping down the concrete. building brick wall border. while the concrete is going hard, without disturbing the posts (of which there should be at least 300mm in the ground) dig a small trench all the way around the base, right next to the frame, about 5 inches wide and 2 inches deep.. 
dry-mix shed base concrete A concrete base requires 3 inch (7.5 cm) of compacted hardcore underneath the 3 inch (7.5 cm) concrete layer. the base can be level with the ground or raised above it. if it is to be level excavate the top earth to 6 inch (15 cm) to allow for the hardcore layer and 3 inch (7.5 cm) thickness of concrete..
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