HVAC Systems Design Handbook, Fourth Edition

While drawings and specifications in a sense are the designer s end product, this is not really the case. From the owner s point of view, the built and operating facility is the only real product. All other activity is only a prelude to the real thing. To truly succeed, the designer must follow the design through bidding and construction to start-up and eventual operation.1
Some parts of the in-construction work and project closeout work, with transition of the project to the owner, are assigned by specification to the contractor. Such work should include, as a minimum: first-run inspections; preparation of operating and maintenance manuals; testing, adjusting, and balancing; and instruction of owner s operating personnel. But getting the project off on the right foot with the contractor, being available during construction, and helping the owner take over and get the project running well are also of serious concern to the project designer.
Designer participation during construction and beyond varies greatly with design office practice and with the owner s desires. Some design offices have one or more individuals dedicated to construction review in service to the owner. Some owners have their own people watch the job during construction, relieving the design office of any possible involvement, except to clarify a conflict in documents or a design error.
When the project design is completed, drawings and specifications are given to contractors with a request to prepare a proposal, to submit a bid. During the bidding period,...