Table of Contents
The A base (in or on the ground) that will support the structure.
Preparing the reinforcing steel (rebar)
A length of ribbed (deformed) #4 rebar, i.e. 12mm (1/2″) thick, was bent in an ‘S’ shape as shown in the picture below. The overall finished length of the bent rebar was about 1800mm (6ft).
Pouring the footing
The hole was filled with A mixture of sand, gravel, water and cement which hardens to a stone like condition when dry..
About 900mm (3ft) or half of the length of the bent reinforcing steel was placed into the wet concrete in the hole with the other half sticking out. See picture.
Note: Make sure that all of the rebar is surrounded by concrete and that no reinforcing steel is touching any ground.
The reinforcing steel should have at least a 50mm (2″) cover of concrete as shown in the plan (Page 1).
Why should the reinforcing steel should have at least a 50mm (2″) cover of concrete?
To prevent the steel from rusting.
Reinforcing steel will eventually rust when exposed to air and moisture. The concrete cover prevents air and moisture getting to the steel.
If the reinforcing steel was to touch the ground, it would eventually begin to rust and the rust would spread along the steel into the concrete see PILE.
Note: For information on how to mix concrete click here