Masonry Magazine July 1979 Page. 18
Completely cover masonry with weather-resistive membrane for 24 hr.
Mean daily air temperature 25° F. (-4° C.) to 20° F. (-7° C.):
(1) Completely cover masonry with insulating blankets or equal protection for 24 hr.
Mean daily air temperature 20° F. (-7° C.) and below:
(1) Maintain masonry temperature above 32° F. (0°C.) for 24 hr. by:
(a) Enclosure and supplementary heat.
**OR**
(a) Electric heating blankets.
(a) Infrared lamps.
(a) Other approved methods.
PART II-PRODUCTS
2.01 BRICK:
Facing Brick:
1. ASTM C 216- , Grade , Type
2. Dimensions: X X
(t) (h) (2)
3. Minimum compressive strength:
4. Provide brick similar in texture and physical properties to those available for inspection at the Architect/Engineer's office.
5. Do not exceed variations in color and texture of samples accepted by the Architect/Engineer.
**OR**
Facing Brick: Provide a cash allowance of per thousand.
Glazed Brick:
1. ASTM C 126- , Grade , Type
2. Dimensions: X X
(t) (h) (ℓ)
3. Minimum compressive strength:
Building Brick:
1. ASTM C 62- , Grade
2. Dimensions: X X
(t) (h) (ℓ)
3. Minimum compressive strength:
Increase the protection time where required in Section 1.05.C.4 to 48 hr. with no change being made in the type of mortar.
Without changing the mortar type and maintaining 24-hr. protection in Section 1.05.C.4, replace type 1 portland cement in the mortar with type III. ASTM C 150.
1.05.C.4.d This section may be written to allow the contractor to select means of protection.
2.01.A.1 Grade: SW for brick in contact with earth. MW elsewhere. Type: FBX. FBS. FBA.
2.01.A.2 Determine availability. Typical actual sizes for use with 3/8-in. mortar joints: 3 5/8 x 25/16 x 7 5/8 or 11 5/8 in. (92 x 59 x194 or 295 mm): 3 5/8 x 2 13/16 x 7 5/8 or 11 5/8 in. (92 x 74 x 194 or 295 mm): 3 5/8 x 3 5/8 x 7 5/8 or 11 5/8 in. (92x92x194 or 295 mm); 3 5/8x5x7 5/8 or 11 5/8 in (92x 127 x 194 or 295 mm): 3 5/8 x 15/8x11 5/8 in. (92x41x295 mm): 5 5/8 x 2 5/16×11 5/8 in. (143 x 59 x 295 mm); 5 5/8 x2 13/16×11 5/8 in. (143x74x295 mm): 5 5/8 x 3 5/8 x 11 5/8 in. (143 x 92 x 295 mm).
2.01.A.3 Required only for structural masonry. Range: 2000 psi to 14,000 psi (13.790 kN/m² to 96,500 kN/m²).
2.01.B.1 Grade: S for narrow mortar joints: SS where face dimension variation must be very small. Type: I, II.
2.01.8.2 See 2.01.A.2.
2.01.B.3 See 2.01.A.3.
2.01.C.1 Grade: SW for brick in contact with carth. MW elsewhere in arcas exposed to moisture and freezing weather. NW in inte rior and backup areas or in exterior areas not subject to freezing.
2.01.C.2 See 2.01.A.2.
2.01.C.3 See 2.01.A.3.