all structural and architectural elements. The coordination of these systems is a critical part of the design and documentation process for laboratory construction or renovation, and the foundation for this coordination is established during the design development phase. Any drawings developed should be verified for code compliance as well as for accuracy by the appropriate specialty consultants.

Interior elevations, which give two-dimensional views of the laboratory interiors, including laboratory benches and fume hoods, and typical wall sections are often part of the design development drawings. They are used to confirm that the programmatic requirements to be met by the laboratory's components are accurately and comprehensively documented, and they provide the basis for an updated construction cost estimate as well as for the construction documents.

Related documents, such as specifications that describe all aspects of the research facility design, are also provided at this stage. These documents, based on the outline of specifications prepared for the schematic design phase, include additional information such as specific products and manufacturers and may be used to update previous estimates of construction costs. Depending on the outcome of the cost estimate, revision of the project's scope and details may be needed to meet the construction budget.

To aid in necessary communication within the client group, the architect should consider supplementing conventional pictorial documents, such as floor plans, elevations, and sections, with others that may be more meaningful to the client. These include perspective drawings, three-dimensional computer-aided design (CAD) drawings, axonometric drawings (two-dimensional drawings that depict three-dimensional objects), study models of both interior and exterior design elements, and full-size mock-ups of interior and exterior elements, made of either paper and cardboard or the proposed building materials. Construction of a full-size mock-up of the proposed laboratory module, permitting users to evaluate the proposed design prior to committing to the design and construction of several laboratories of a similar design, is highly recommended, particularly prior to the commencement of construction documents.

The client team must make the effort to understand the general and specific aspects of the design, the user representative should actively participate in the development of design elements, and the client's senior administrators should