Page 351 - Design of Reinforced Masonry Structures

WALLS UNDER GRAVITY AND TRANSVERSE LOADS 6.3

FIGURE 6.1 Load-bearing and nonload-bearing walls.

A brief discussion of Seismic Design Categories is presented in Chap. 7. Both MSJC-08
(Section 7.6) and 2009 IBC (Section 2103.8) [6.2] require use of Type S or N mortar for
glass unit masonry.
3. Masonry walls can be described in terms of the number of wythes used to build them.
A wythe is simply a continuous vertical section of masonry, one unit in thickness. A
wall may be a single- (Fig. 6.3) or multiple-wythe (Fig. 6.4), depending on the number
of wythes used (as seen in plan). In some older unreinforced multistory brick buildings,
solid brick walls have been found to have as many as four wythes. Single-wythe walls
consist of hollow masonry units laid with face-shell mortar bedding. Hollow units may

FIGURE 6.2 Typical gravity and lateral loads
acting on a wall.