Figure 7-12.Floor framing plan.

Blueprint Reading and Sketching - Intro to drafting and architecture practices
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Figure 7-12.—Floor framing plan. Information on a floor plan includes the lengths, thicknesses, and character of the building walls on that particular floor, the widths and locations of door and window openings, the lengths and character of partitions, the number and arrangement of rooms, and the types and locations of utility installations. Framing plans show the dimension numbers and arrangement of structural members in wood-frame construction. A simple floor framing plan is superimposed on the foundation plan shown in figure 7-9. From this foundation plan you learn that the ground floor joists in this structure will consist of 2 by 8s, lapped at the girder, and spaced 16 inches on center (OC). The plan also shows that each row of joists is to be braced by a row of 1 by 3 cross bridges. More complicated floor framing problems require a framing plan like the one shown in figure 7-12. That plan, among other things, shows the arrangement of joists and other members around stairwells and other floor openings. A wall framing plan provides information similar to that in figure 7-11 for the studs, corner posts, bracing, sills, plates, and other structural members in the walls. Since it is a view on a vertical plane, a wall framing plan is not a plan in the strict technical sense. However, the practice of calling it a plan has become a general custom. A roof framing plan gives similar information with regard to the rafters, ridge, purlins, and other structural members in the roof. A utility plan is a floor plan that shows the layout of heating, electrical, plumbing, or other utility systems. Utility plans are used primarily by the ratings responsible for the utilities, and are equally important to the builder. Most utility installations require that openings be left in walls, floors, and roofs for the admission or installation of utility features. The builder who is placing a concrete foundation wall must study the utility plans to determine the number, sizes, and locations of openings he or she must leave for utilities. 7-13

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