Page 54 - Design of Reinforced Masonry Structures

MASONRY UNITS: APPLICATIONS, TYPES, SIZES, AND CLASSIFICATION 2.7

of units shown in Fig. 2.5. A hollow brick
unit may have two or three cells, referred to
as two- or three-core (or two- or three-cell)
units, respectively. The partition between
the cells is called the web. The two parts
of the block perpendicular to the web are
called the face shells (oriented along the
length of a wall); those parallel to the web
(or webs) are called the ends (oriented per-
pendicular to the wall). The cells are used
for the placement of reinforcement and/or
grouting as necessary. Figure 2.6 shows
positioning of reinforcement in conjunc-
tion with solid and hollow brick units. A
stretcher may be produced with depressed
webs and end shells, called a bond beam
stretcher, to permit placement of horizontal
reinforcement in bond beams (Fig. 2.7).
The coring patterns shown in Fig. 2.5
are for illustrative purposes only. Coring
practices vary with manufacturers who
should be consulted for actual sizes and
patterns. ASTM C62-01: Specification for
Building Brick (Solid Masonry Units made
from Clay or Shale) [2.12] requires that the FIGURE 2.5 Configurations of hollow bricks.
(Courtesy: BIA.)

FIGURE 2.6 Reinforced masonry construction with solid and hollow brick units: (a) solid brick wall
with reinforcement in grouted pocket; (b) pilaster with solid units; (c) reinforced hollow brick wall.
(Courtesy: BIA.)