Through the use of a concrete delivery/mixing company, wet concrete of the correct grade can be poured into the trench. By calculating the appropriate amount required ahead of time, we can order an accurate amount to be delivered. Concrete is supplied in cubic metres and can be measured easily through the use of volume calculation formulae. To measure the amount of concrete required for a strip footing, the method is as follows. Simply measure the length of the trench along the centre point of its width. Where a trench turns around a corner, stop and start the measurements of length at the centre of the trench intersection. By adding up the length of each run, we can calculate the total length of the trench. Multiply this length by the desired width and depth of the footing, making sure to use the correct decimals for millimetres and metres. The resulting value denotes the amount of concrete required in cubic metres. The red shaded areas display where the volume of concrete is calculated twice. The green shaded area displays areas where the volume of concrete is not calculated at all. This is a result of taking measurements down the centre line of the trench. Provided that the trenches are at 90 degrees to one another, and the size of the footing remains consistent throughout, the twice measured areas account for the non-measured areas. By accurately calculating the correct amount of concrete, we can avoid unnecessary waste and reduce costs. 

Once the concrete has arrived, the trench can begin to be filled. If the truck can make it close to the trench, it can be poured directly into the hole via the chute at the back of the machine. More expensive machines can be hired that are able to pump the concrete from the truck over long distances to the desired location, in the event that access is restricted. For residential extensions however, most of the time it must be brought from the concrete truck to the trench via wheelbarrows and physical labour. As the concrete is poured in the trench, an operative on the oversight or in the trench can pull the concrete around with a rake, moving the mixture around to ensure even coverage in the trench. As the level of wet mix rises in the trench, the tops of the pegs begin to get covered. If called for in the specifications, lengths of rebar are pushed horizontally into the wet concrete at varying heights in the pour to provide more tensile strength to the finished concrete. In using the rake to pull the concrete around, the tops of the pegs can be identified in the mixture to assess the height of the concrete. Once the correct amount of concrete has been poured into the trench, a vibrator can be used if required to remove any air from the mixture and bring it to the top. Once this has been done, a light tamping can take place across the concrete to flatten out the surface for the bricklayer. This is not critical, as all of this concrete will be buried again over time. By smoothing over the surface somewhat, the first course of masonry is a little easier.