Reinforcing bars must be carefully and accurately placed to conform to the requirements of engineering. On this pool sealed engineered drawings called for a minimum 4" gunite shell with rebar enforcing placed in the center of the shell wall. These pictures were taken after a weaper was ground out and the area inspected. The high volume contractor was notified by his Project Manager who then refused to correct the problem. His reasoning was it would involve considerable time and expense to the repair. He simply ordered the structural rebar to be cut out and filled with hydraulic cement. It should be noted this particular corner of the swimming pool was at the pool spa joint, a critical area of stress. The concrete thickness from rebar to the back of the shell measured only 2.5 inches with voids less than 1 inch. This home owner unknowingly accepted a pool with a shell of 2.5 inches and considerable structural rebar removed. How did this happen? One word...volume. This contractor boasts of building over 150 pools a year. Without the ability to provide direct supervision of each phase of the pool he must rely on subcontractors to insure a thorough job is completed. Another great reason to avoid high volume production builders.....unless of course future structural failures are acceptable to you.