Galvanized, minimum 20-gauge steel of approved design.
MASONRY CONTROL JOINT
Rubber, cross shape ASTM D-2000 2AA-805, 80 durometer hardness when tested in accordance with ASTM D-2240. Elastic caulking shall be non sagging one or two part non-acid-curing low modulus silicone sealant.
Type S: ASTM C-270, Type S mortar with compressive strength 1800 psi at 28 days. Follow requirements ofU.B.C. Standard 24-20 (ASTM C-270).
Proportions: (by volume)
Portland Cement: Yz
Masonry Cement (Type II): 1
Aggregate: 2 Y4 to 3 times the sum of volumes of the cements used when measured in loose, damp conditions OR
Portland Cement: 1
Hydrated Lime or Lime Putty: Y4 to Yz
Aggregate: 2 Y4 to 3 times the sum of the volumes of the cement and lime
used when measured in loose, damp condition.
A. Strength: Compressive strength 2000 psi at 28 days.
Proportions (by volume):
a. b. c. d. e. f.
Portland Cement: 1 part Sand: 2 Yz to 3 parts. Pea Gravel: 1 Yz to 2 parts. Hydrated Lime: 1110 part Water: to yield slump of 9 to
10 inches. Approval required.
Cement Quantity: Minimum cement: 7.9 sacks per yard without admixture or
sacks per yard with admixture.
Grout Admixture: Grout-Aid: as manufactured by Super Concrete Emulsions Ltd. Or approved equal.
E. Ready Mix Grout: Ready mix grout to conform to ASTM C-94.
3 Section 04220