Figure 2-9. - Roof framing plan.

the divisions, the most common sections are generally located in the architectural and structural divisions.

All properly prepared sections are important to those responsible for constructing a building. To Builders, the most important sectional drawings are the wall sections, such as those shown in figure 2-10. These sections, commonly drawn at a scale of 3/4 in. = 1 ft and normally located in the structural division, provide a wealth of information that is necessary to understand structural arrangement, construction methods, and material composition of the walls of the building.

Details

DETAILS are large-scale drawings of the construction assemblies and installation that were not clearly shown in the sections. These enlarged drawings show the Builder how the various parts of the structure are to be connected and placed. The construction of specific types of foundations, doors, windows, insulation, cornices, and so forth, is customarily shown in the detail drawings located within their appropriate main division of the construction drawings. Details are usually grouped together so that references may be made readily available. Figure 2-7 shows a detail of a typical concrete footing.

The scale selected for details depends on how large it needs to be drawn to explain the necessary information clearly. Details are usually drawn at a larger scale than sections, generally 3/4 in., 1 1/2 in.,