BL-21 Ladder Reinforcement

The BL-21 consists of ladder-type masonry reinforcing with box ties lap-welded every 16” (400 mm) O.C.

• They extend across the cavity or collar joint into the outer wythe and should be embedded a minimum of 1-1/2“ (40 mm) but no closer than 5/8” (16 mm) from the outer face.
• A fabricated ladder-type reinforcement designed to be embedded in the horizontal mortar joints of cavity, veneer and composite masonry walls.

AVAILABLE FINISHES:

Finish	Material	Specification	Coating Specification	Minimum Coating Mass
Mill Galvanized	Wire	CSA A370-14	A641	.010”
Hot Dipped Galvanized After Fabrication	Wire	CSA A370-14	ASTM A153 Class B2	1.50 oz/ft2 (457 g/m²)
Stainless Steel	Wire	ASTM 79-AISI, Type 302 & 304	None	Uncoated

PACKAGING:

• 10’ (3.048 m) lengths.
• 25 pieces per bundle.

NOTE:

• Bed joint alignment for connecting wythes recommended.
• Complies with ASTM C951, ACI 530 for joint reinforcement, CSA standard A370.