// CODE SNIPPET
2220.127.116.11 Bonding With Wall Ties
JUMP TO FULL CODE CHAPTER
Except as required by Section 218.104.22.168.1, where the facing and backing (adjacent wythes) of masonry walls are bonded with wire size W2.8 (MW 18) wall ties or metal wire of equivalent stiffness embedded in the horizontal mortar joints, there shall be at least one metal tie for each 41/2 square feet (0.42 m2) of wall area. The maximum vertical distance between ties shall not exceed 24 inches (610 mm), and the maximum horizontal distance shall not exceed 36 inches (914 mm). Rods or ties bent to rectangular shape shall be used with hollow masonry units laid with the cells vertical. In other walls, the ends of ties shall be bent to 90-degree (1.57 rad) angles to provide hooks no less than 2 inches (51 mm) long. Wall ties shall be without drips. Additional bonding ties shall be provided at all openings, spaced not more than 36 inches (914 mm) apart around the perimeter and within 12 inches (305 mm) of the opening.
Where the facing and backing (adjacent wythes) of masonry are bonded with adjustable wall ties, there shall be at least one tie for each 1.77 square feet (0.16 m2) of wall area. Neither the vertical nor horizontal spacing of the adjustable wall ties shall exceed 16 inches (406 mm). The maximum vertical offset of bed joints from one wythe to the other shall be 11/4 inches (32 mm). The maximum clearance between connecting parts of the ties shall be 1/16 inch (1.6 mm). When pintle legs are used, ties shall have at least two wire size W2.8 (MW 18) legs.
Related Code Sections
222.214.171.124 Masonry, Bonding With Wall Ties
and backing (adjacent wythes) of masonry are bonded with adjustable wall ties, there shall be at least one tie for each 1.77 square feet (0.16 m 2 ...
NYC Building Code 2008 > 21 Masonry > 2109 Empirical Design of Masonry > 2109.6 Bond > 2109.6.3 Bonding With Wall Ties or Joint Reinforcement > 2126.96.36.199 Bonding With Wall Ties
Reference Standard 10 Structural Work [PDF] (page 12)
the header below at least 3 in. 7.3 BONDING WITH METAL TIES.-The facing and backing (adjacent wythes) of masonry walls shall be bonded with corrosion ...
Article 9 Construction [PDF] (page 21)
of solid masonry shall be interposed between the wall section below such point and the wall section next above. (1.77). f. Bonding of Withes in Hollow ...
2109.6.4 Masonry, Bonding With Natural or Cast Stone
In ashlar masonry, bonder units, uniformly distributed, shall be provided to the extent of not less than 10 percent of the wall area. Such bonder ...
NYC Building Code 2008 > 21 Masonry > 2109 Empirical Design of Masonry > 2109.6 Bond > 2109.6.4 Bonding With Natural or Cast Stone
2188.8.131.52 Masonry, Masonry Bonded Hollow Walls
In masonry bonded hollow walls, the facing and backing shall be bonded so that not less than 4 percent of the wall surface of each face is composed ...
NYC Building Code 2008 > 21 Masonry > 2109 Empirical Design of Masonry > 2109.6 Bond > 2109.6.2 Bonding With Masonry Headers > 2184.108.40.206 Masonry Bonded Hollow Walls