Main Divisions of Project Drawings

Figure 2-3.—Symbols used to identify sections, elevations, and details. GENERAL NOTES refer to all of the notes on the drawing not accompanied by a leader and an arrowhead. As used in this TRAMAN, general notes for a set of drawings that cover one particular type of work are placed on the first sheet of the set. General notes are usually placed a minimum of 3 inches below the Revision block. General notes for architectural and structural drawings may include, when applicable, roof, floor, wind, seismic, and other loads, allowable soil pressure or pile-bearing capacity, and allowable unit stresses of all the construction materials used in the design. General notes for civil, mechanical, electrical, sanitary, plumbing, and similar drawings of a set may include, when applicable, references for vertical and horizontal control (including sounding) and basic specific design data. General notes may also refer to all of the notes grouped according to materials of construction in a tabular form, called a SCHEDULE. Schedules for items, like doors, windows, rooms, and footings, are somewhat more detailed. Formats for these are covered later in this chapter. MAIN DIVISIONS OF PROJECT DRAWINGS Generally, working or project drawings are divided into the following major divisions: civil, architectural, structural, mechanical, electrical, HVAC, and fire protection. In Seabee construction, however, the major divisions most commonly used are as follows: civil, architectural, structural, mechanical, and electrical. As Builders, you will deal mainly with civil, architectural, and structural divisions. For the electrical division, you can refer to the Construction Electrician (CE) Advanced along with the fire protection division. For information pertaining to the mechanical division, along with heating, venting, and air-conditioning (HVAC), you can refer to the Utilitiesmen Advanced. Regardless of the category, working drawings serve the following functions: They provide a basis for making material, labor, and equipment estimates before construction begins. They give instructions for construction, showing the sizes and locations of the various parts. They provide a means of coordination between the different ratings. They complement the specifications; one source of information is incomplete without the others. CIVIL DRAWINGS CIVIL WORKING DRAWINGS encompass a variety of plans and information to include the following: Site preparation and site development Fencing Rigid and flexible pavements for roads and walkways Environmental pollution control Water supply units (that is, pumps and wells) Depending on the size of the construction project, the number of sheets in a set of civil drawings may vary from a bare minimum to several sheets of related drawings. Generally, on an average-size project, the first sheet has a location map, soil boring log, legends, and sometimes site plans and small civil detail 2-6