This is a very telling time and will show how well you vibrated the concrete. If the concrete seat is lovely and smooth, then didn't you do well!
On the other hand, if it has a bit of a rough surface and a few air holes, then just say you planned it that way as you prefer a more rustic look.
A big fat Warning
Heed this warning.
It is almost time to turn the seat up the right way and position it in place on blocks by footing.
The seat is very heavy and awkward, and has pieces of reinforcing rod sticking out the end.
You will need some type of mechanical lifting device or a few very strong people who know how to lift and maneuver heavy, awkward structures.
Step 11: Dig the footing and place the seat
Dig the footing hole at least 100mm deeper than the reinforcing rods that stick out of the bottom of the seat. The rods stick out the bottom of the seat by 500mm, therefore the hole
will need to be 600mm deep.
Sit the chair in place on blocks by the footing, making sure you first read the warning above.
Step 12: Pour the footing
Now it's just a matter of filling up the footing hole with concrete and that is basically all the hard work done.
Forget about it for a couple of weeks to give the concrete footing a chance to cure.