Next, CLP's steel crew forms a rigid contoured grid of reinforcing steel to create the backbone of your swimming pool. You will see bars crossing one another for the utmost in reinforcement. Notice the tie wires at some intersections; they tie the steel together. Be advised that even though we bend the ends of the steel bars, the steel may be sharp, so please be careful when inspecting the progress of your pool's construction. You will notice that there are block spacers under the steel. This is typical of concrete swimming pool construction and helps to hold the steel above the soil, so the steel will end up being approximately in the middle of the gunite. Water weighs 62.42 lbs per cubic foot, and will apply pressure of up to .050 lbs per square inch of pressure against the bottoms and sides of the pool. It is imperative that the proper measures are taken to structurally reinforce the shell of your swimming pool. When steel is complete, it will look like the steps are missing; they will be added during a different phase.