drawings that are complete enough for the user to require no further information. Project drawings include all of the drawings necessary for the different Seabee ratings to complete the project. These are the drawings that show the size, quantity, location, and relationship of the building components.

A complete set of project drawings consists of general drawings, detail drawings, and assembly drawings. General drawings consist of "plans" (views from above) and elevations (side or front views) drawn on a relatively small defined scale, such as 1/8 in. = 1 ft. Most of the general drawings are drawn in orthographic projections, although sometimes details may be shown in isometric or cavalier projections. Detail drawings show a particular item on a larger scale than that of the general drawing in which the item appears, or it may show an item too small to appear at all on a general drawing. Assembly drawings are either an exterior or a sectional view of an object showing the details in the proper relationship to one another. Usually, assembly drawings are drawn to a smaller scale than are detail drawings. This procedure provides a check on the accuracy of the design of detail drawings and often discloses errors.

Construction drawings are reviewed and evaluated for design and technical accuracy by NAVFACENGCOM to ensure good quality, consistency, and cost effectiveness of the design. Special terms covered in the following paragraphs describe these procedures from the initial development of the project to the final phase of construction.

PRELIMINARY DRAWINGS

PRELIMINARY DRAWINGS are the initial plans for projects prepared by the designer or architect's and engineer's (A/E) firm during the early planning or promotional stage of the building development. They provide a means of communication between the designer and the user (customer). These drawings are NOT intended to be used for construction, but they are used for exploring design concepts, material selection, preliminary cost estimates, approval by the customer, and a basis for the preparation of finished working drawings. Notice that most of the design work incorporated into the preliminary drawings at the 35 percent stage of completion contain, as a minimum, the following information: site plans, architectural floor plans, elevations, building sections, preliminary finish schedule and furniture layouts, interior and exterior mechanical and electrical data, and civil and structural details. All of the preliminary project drawings scheduled for use by the Seabees are reviewed by the COMSECONDNCB or COMTHIRDNCB, as appropriate e, for construction methods or procedures, whereas preliminary contract drawings are reviewed by the ROICC.

FINAL DRAWINGS

FINAL DRAWINGS are 100 percent complete, signed by the contracting officer, and are used for bidding purposes. This set of plans becomes the official contract drawings once the contract is awarded. Final drawings are often revised to show changes made by a scope change or by a change order with the concurrence of both the contractor and the contracting officer. At this stage of completion, no further functional input may be introduced into the final drawings because of time constraints. In general, final drawings, together with project specifications, cost estimates, and all of the calculations, comprise the final stages of design requirements.

RED-LINED DRAWINGS

RED - LINED DRAWINGS are the official contract drawings that you will mark up during construction to show as-built conditions. They are marked in the color "red" to indicate either a minor design change or a field adjustment.

AS-BUILT DRAWINGS

AS - BUILT DRAWINGS are the original contract drawings (or sepia copies) that you will change to show the conditions from the red-lined drawings. When the facilities have been completed, the construction contractor or the military construction force (NMCB) is required to provide the ROICC with as-built drawings, indicating construction deviations from the contract drawings. All of the as-built marked-up prints must reflect the exact conditions on all features of the project as constructed. After the project is completed, the ROICC transmits the as-built marked-up prints to the engineering field division (EFD).

RECORD DRAWINGS

The original contract drawings, corrected according to the marked prints, provide a permanent record of as-built conditions when the construction work on a project is completed. The original RECORD DRAWINGS may be retained in the custody of the