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// CODE SNIPPET

2109.6.2 Bonding With Masonry Headers

NYC Building Code 2008 > 21 Masonry > 2109 Empirical Design of Masonry > 2109.6 Bond > 2109.6.2 Bonding With Masonry Headers
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2109.6.2.1 Solid Units

Where the facing and backing (adjacent wythes) of solid masonry construction are bonded by means of masonry headers, no less than 4 percent of the wall surface of each face shall be composed of headers extending not less than 3 inches (76 mm) into the backing. The distance between adjacent full-length headers shall not exceed 24 inches (610 mm) either vertically or horizontally. In walls in which a single header does not extend through the wall, headers from the opposite sides shall overlap at least 3 inches (76 mm), or headers from opposite sides shall be covered with another header course overlapping the header below at least 3 inches (76 mm).

2109.6.2.2 Hollow Units

Where two or more hollow units are used to make up the thickness of a wall, the stretcher courses shall be bonded at vertical intervals not exceeding 34 inches (864 mm) by lapping at least 3 inches (76 mm) over the unit below, or by lapping at vertical intervals not exceeding 17 inches (432 mm) with units that are at least 50 percent greater in thickness than the units below.

2109.6.2.3 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 of masonry bonded units extending not less than 3 inches (76 mm) into the backing. The distance between adjacent bonders shall not exceed 24 inches (610 mm) either vertically or horizontally.

Related Code Sections


2109.6.2 Masonry, Bonding With Masonry Headers
Where the facing and backing (adjacent wythes) of solid masonry construction are bonded by means of masonry headers, no less than 4 percent ...
NYC Building Code 2008 > 21 Masonry > 2109 Empirical Design of Masonry > 2109.6 Bond > 2109.6.2 Bonding With Masonry Headers
Reference Standard 10 Structural Work [PDF] (page 12)
masonry see section 8. 7.2 BONDING WITH MASONRY HEADERS.-Where the facing and backing of solid masonry construction are bonded by means of masonry headers ...
NYC 1968 Code (Vol II) [PDF] > Reference Standard 10 Structural Work
2109.6.4.1 Masonry, Ashlar Masonry
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 > 2109.6.4.1 Ashlar Masonry
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
2109.6.3 Masonry, Bonding With Wall Ties or Joint Reinforcement
Except as required by Section 2109.6.3.1.1, where the facing and backing (adjacent wythes) of masonry walls are bonded with wire size W2.8 (MW 18 ...
NYC Building Code 2008 > 21 Masonry > 2109 Empirical Design of Masonry > 2109.6 Bond > 2109.6.3 Bonding With Wall Ties or Joint Reinforcement
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