fixture, located to avoid pipe runs, and extending from center to center of
the double wall. Walls and partitions shall be adequately reinforced for
support of wall-hung plumbing fixtures when chair carriers are not
specified.
3.2.4
Clay or Shale Brick Units
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NOTE: Specify type of bond required, if other than
running bond is desired.
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Brick facing shall be laid with the better face exposed. Brick shall be
laid in running bond with each course bonded at corners, unless otherwise
indicated. Molded brick shall be laid with the frog side down. Brick that
is cored, recessed, or has other deformations may be used in sills, treads,
soldier courses, except where deformations will be exposed to view. [Lay
fire brick by dipping each brick in a soft mixture of fire clay and water
and then rubbing the brick into place with joints as thin as practicable or
provide refractory mortar with joints not more than 10 mm 3/8 inch thick.]
3.2.4.1
Wetting of Units
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NOTE: If clay, shale brick, or hollow brick is
specified, include wetting requirements for units
having an initial rate of absorption of more than
0.155 gm per minute per square cm (1 gm per minute
per square inch) (one gram per minute per square
inch) of bed surface.
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Wetting of clay, shale brick, or hollow brick units having an initial rate
of absorption of more than 0.155 gm per minute per square cm 1 gram per
minute per square inch of bed surface shall be in conformance with ASTM C 67.
The method of wetting shall ensure that each unit is nearly saturated but
surface dry when laid. Test clay or shale brick daily on the job, prior to
laying, as follows: Using a wax pencil, draw a circle the size of a
quarter on five randomly selected bricks. Apply 20 drops of water with a
medicine dropper to the surface within the circle on each brick. If the
average time that the water is completely absorbed in the five bricks is
less than 1-1/2 minutes, wet bricks represented by the five bricks tested.
3.2.4.2
Solid Units
Bed, head, and collar joints shall be completely filled with mortar.
3.2.4.3
Hollow Units
Hollow units shall be laid as specified for concrete masonry units.
3.2.4.4
Brick-Faced Walls
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NOTE: Use the first bracketed option for masonry
cavity wall construction. Use the second bracketed
option for cold-formed steel framing and brick
veneer.
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SECTION 04200
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