Presidential utilizes those standards, specifications and/or interpretations and recommendations of professionally recognized agencies and groups, such as AISC, AWS, ASTM, AISI, MBMA, etc., as the basis in establishing its own design, fabrication and quality criteria, standards, practices, methods and tolerances.
The design loads are as specified by the customer and shall be clearly set forth in the proposal and contract documents. The design loads include material dead weight, roof live loads, wind loads, seismic loads, auxiliary loads, collateral loads, as specified. Other loads due to mezzanines, cranes, mechanical equipment supported by the roof members, etc., are applied to the structural components, as specified. Other design considerations, such as the permissible vertical and horizontal deflection of the structure under loads, are incorporated into the building design, per Presidential standards, as specified by the customer.