Concrete will probably be delivered to the site by a local ready-mix company in a truck-mounted mixer unit. When you call for concrete, the supplier will need to know when you want the concrete delivered, how much you need, and what type of mix you want.

Timing is critical. Concrete can only be held for two to three hours after mixing before it starts to harden.

Cost

Concrete is sold by the cubic yard. Estimate how many cubic yards you will need to fill your form work, then add about one-fourth of a yard to make sure you do not run short.

Transport

For the transport of concrete, straight steel pipes of various lengths and thicknesses are used. Rubber hoses and steel bends may be inserted along the pumping line, which make it possible to avoid obstacles and to overcome differences in levels, up to the point of discharge. In order to meet practical requirements and provide for fast assembly when connecting the pipes for concrete, special couplings are used to close the ends of the pipes, which are fitted with particular collars.

-- Tips courtesy of HomeAdvisor.com