Sample Architectural and Engineering Agreement (PDF). Sample Agreement for Architects and Engineers to use when working with The City.List of all current AIA Contract Documents. In preparing estimates of the Cost of Work, the Bridging Architect shall be permitted to include contingencies for design, bidding, and price. A complete project must be submitted on the registered intended submittal date (see form DSA 3: Project Submittal Checklist). The Contract Documents are intended to be cooperative and to provide for a complete work.