Page 97 - Masonry and Concrete

Understanding Masonry
96 CHAPTER FOUR

weight as much as possible. The long exterior sides of the blocks are
called face shells, and the short sections connecting the face shells are
called webs. The core holes are tapered slightly to make it easier to
remove the block from the manufacturing molds, and to provide a bet-
ter grip for handling in the field. The wider surface should always be
on top when the units are placed in a wall because it also gives a larger
area for spreading mortar (Figure 4-9).

LARGER MORTAR
BEDDING AREA
AT TOP

FACE SHELL
A

FLARED STRAIGHT
WEB CORE
SHELL TAPER
SECTION A

5 5 5 5 5 5
5 / 8 7 / 8 15 / 8 9 / 8 7 / 8 15 / 8

5 5 5 5 5 5 5 5 5
3 / 8 7 / 8 15 / 8 7 / 8 7 / 8 15 / 8 11 / 8 7 / 8 15 / 8
4 8 16 6 8 16 8 8 16 10 8 16 12 8 16
NOMINAL
FIGURE 4-9
Concrete block terminology.

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