Page 145 - Masonry and Concrete

Masonry Construction Techniques
144 CHAPTER FIVE

ROWLOCKS
STUD
FRAME
HEADERS
BACKING
WALL
SOLDIER
COURSE

VENEER

FIGURE 5-8

Half rowlocks and half headers in masonry veneers. (from Beall, Christine, Masonry
Design and Detailing, 4th edition, McGraw-Hill, New York).

covers to prevent wetting, staining, or discoloration. Masonry units
that are kept dry but subjected to freezing temperatures while stored
may be used in construction without damage to the units or to the
masonry. Masonry units that have absorbed moisture from rain or
snow and are then frozen, however, must be thawed before they can be
used, so it is always easiest to keep the units covered and dry. Aggre-
gates should be protected against contamination from rain, ice, and
snow and from blowing dust and soil during construction so that they
do not contribute to staining or reduced mortar bond strength. Differ-
ent aggregates should be stored in separate stockpiles and all aggregate
stockpiles covered with a waterproof tarp or plastic covering when not

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