Page 322 - Masonry and Concrete

Masonry Garden Walls

321
MASONRY GARDEN WALLS

“QUEEN”
CLOSER
“QUEEN” CLOSER
CUT BRICK

FIGURE 9-8
English corner bond.

brick called a queen closer (Figure 9-8). The common or American
bond pattern uses header units in every sixth course. With common
bond, it is customary to begin with a header course at the base of the
3
wall, and field-cut 4 closure units are required to make the corner
pattern (Figure 9-9). The inside and outside wythes of double-wythe
walls must be laid at the same time so that the ties or header units can
be set in place. The collar joint between stretcher wythes should be
completely filled with mortar so that water does not collect in the
voids, where it could cause freezing and thawing damage.
A masonry wall cap is called a coping. The appearance of a wall is
affected by the type of coping that is used (Figure 9-10). Some manu-
facturers produce special-shaped brick copings that are sloped or con-
1
toured to shed water and project beyond the face of the wall 2 in. on
both sides. Brick copings can also be made of solid bricks laid as head-
ers or of cored bricks laid as rowlocks. Stone or precast concrete cop-
ings can also be used to cap a brick wall. The top of a masonry wall
exposed to the weather requires special care and attention. Since
water can penetrate through the joints in a masonry coping, extra

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