The purpose of the preliminary design studies is :
1° Determine the detailed surface areas of all the elements in the programme;
2° Establish the dimensions of the structure and its appearance in plans, sections and façades;
3° Define the construction principles, materials and technical installations;
4° Drawing up the final estimate of the provisional cost of the works, broken down by trades;
5° Enabling the client to finalise the programme;
6° Enabling the fixed remuneration to be set in accordance with the conditions laid down in the public works contract.