Figure 4-1.—Hot- and cold-water riser diagram.Show the location and direction of all new utilities,of all materials, such as concrete and reinforcing steel.unless separate utility site plans are included in otherdivisions, such as the mechanical, plumbing, orelectrical divisions. That is sometimes done for large,complex projects.ARCHITECTURAL DIVIS1ONThe architectural division includes drawings, suchas floor and roof plans, interior and exterior elevations,millwork, door and window schedules, finish schedules,special architectural treatments, and nonstructuralsections and details. For a discussion of these drawings,you should review chapter 10 of the EA3 TRAMAN.STRUCTURAL DIVISIONThe structural division is comprised of all of thedrawings that fully describe the structural compositionand integrity of a building or structure. Included in thedivision are the foundation plan and details; floor, wall,and roof framing plans and details; reinforcing plans anddetails; beam and column details; and other suchstructural plans and details. In a set of drawings, the firstsheet in the structural division also should include, whenapplicable, roof, floor, wind, seismic, and other loads,allowable soil bearing capacity, and allowable stressesAgain, you should review chapter 10 of the EA3TRAMAN.MECHANICAL DIVISIONThe mechanical division includes the plans, details,and schedules that describe the heating, ventilating, andair-conditioning (HVAC) systems equipment andinstallation requirements. We’ll discuss more aboutthese systems later in this chapter.The mechanical division also includes plumbingdrawings that show the fixtures, water supply and wastedisposal piping, and related equipment that are to beinstalled in a building. The drawings include plumbingplans, riser diagrams, details, and fixture schedules.Remember, that in the order of drawings, plumbingdrawings always follow the HVAC drawings.As you recall from your study of chapters 8 and 10of the EA3 TRAMAN, a plumbing plan (or layout) is aplan view of the fixtures, lines, and fittings to beinstalled in a building. For an uncomplicated buildingcontaining, let’s say, one water closet and one lavatory,you can easily prepare a plumbing plan that can beclearly interpreted by the planners and estimators,inspectors, or other users of the drawing. For such abuilding, the plumbing plan might well be all that is4-2
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