Subpart 5136.2 - Special Aspects of Contracting for Construction 5136.201 Evaluation of contractor performance.5136.208 Concurrent performance of firm-fixed-price and other types of construction contracts.5136.209 Construction contracts with architect-engineer firms.5136.213 Special procedures for sealed bidding in construction contracting.5136.270 Expediting construction contracts.5136.272 Prequalification of sources.Parent topic: Part 5136 - Construction and Architect-Engineer Contracts