Later in the show Kevin will be erecting a 3m x 3m Absco garden shed picked from
a Mitre 10 catalogue because its by far the simplest one to put together,
however firstly we need to lay a concrete slab for the base.
Pick a level spot to build your box. Cut timber to length for the formwork,
cutting 2 pieces to the exact length of the slab and leaving the other 2
oversized so you can nail them together. Once the formwork is cut, lay the
timber down and nail together.
Position the formwork the correct distance from the fence, after checking with
your local council for the required minimum distance. Drive stakes along each
side to stop the formwork from bowing out when concrete is poured.
Remove any grass or organic matter from the top of the ground. Cut plastic
sheeting to size, to prevent moisture rising, then lay out and staple to
Use steel reinforced mesh in slab to prevent cracking from movement in earth or
tree roots. Our slab requires about 1 cubic metre of cement. By using a mini-mix
truck we can reach all sides of the slab quickly and easily. Once poured, use a
long length of timber to flatten cement. Once this is level use a wood float to
smooth the surface.
Let the cement cure before attaching the shed.
MitrePlans for this any many other DIY projects are available at Mitre 10 stores