Step 5: Cut and shape the reinforcing rod
Cut and bend three lengths of 10mm diameter reinforcing rod to the shape of the seat, allowing for 500mm to stick out from the bottom.
The sticking out part will eventually
go into the footing.
Also cut seven pieces of 10mm diameter reinforcing rod 350mm long for the cross members.
Tip: Use a couple of pieces of pipe, such as water pipe, to help bend the reinforcing rod.
Use a pipe size that the reinforcing rod will easily go into.
Step 6: Position the framework
Screw the top stop-end piece to the top of the framework.
Sit the framework UPSIDE DOWN securely on blocks with the back covers (plywood pieces) off.
Because the framework is upside down, it means that the stop-end piece will
now be at the bottom.
This is a temporary position until the concrete has been poured and cured.
Ensure that the framework is sitting securely and the stop-end is resting on the ground.
Next, put the three long pieces of reinforcing rod in place and tie them to the cross pieces with tie wire, forming a grid of sorts. See fig.6
The three long pieces of reinforcing rod should be sticking out the top of the framework (which is really the bottom, because the framework
is upside-down) by 500mm.
It is also important to ensure that the reinforcing is placed to allow for ample concrete to surround all parts of the steel - both for strength and to prevent rust.