It is usually the case that clients opt for one option or the other according to which is the least expensive. It is in the company’s belief that, by providing the client with all the information possible, we can better explain the design solution and therefore arrive to a mutual agreement on the way forward. It is has become good practice to provide the client with a comparative statement of the estimated expenditures prepared prior to commencement of works. When properly detailed, it is a general rule that the price variation between one option and the other is negligible. What usually makes a difference is the way the precast planks are detailed.