Section SPS 362.2109 - Empirical design of masonry(1) BEARING ON MASONRY . This is a department rule in addition to the requirements in IBC section 2109.1: Lintels shall be considered structural members and shall be designed in accordance with the applicable provisions of IBC chapter 16.(2) JOINTING. These are department rules in addition to the requirements in IBC section 2109: (a)Expansion and shrinkage. Joints commensurate with lateral stability requirements shall be installed in all exterior masonry to allow for expected growth of clay products and shrinkage of concrete products.(b)Vertical jointing. Vertical movement joints shall be provided at a spacing in compliance with Table 362.2109. Note: To accomplish the intended purpose, joints should be located at critical locations, such as changes in building heights, changes in framing systems, columns built into exterior walls, major wall openings, and changes in materials.
(c)Horizontal jointing. Where supports such as shelf angles or plates are required to carry the weight of masonry above the foundation level, a pressure-relieving joint shall be provided between the structural support and any masonry that occurs below this level. The joint width shall be such as to prevent any load being transmitted from the support to any element directly below. All mortar and rigid materials shall be kept out of this joint. This type of joint shall be provided at all such supports in a concrete frame structure where clay masonry is exposed to the weather. Table 362.2109
Maximum Spacing of Exterior Masonry Movement Joints Between Unr estrained Ends [DAGGER] (Feet
Openings (Percent of Total Wall Area) |
Loading Conditions | Type of Material | 0 to 20 | More than 20 |
Joint to Joint | Joint to Corner | Joint to Joint | Joint to Corner |
Load-bearing | Clay units | 140 | 70 | 100 | 50 |
Concrete units | 60 | 30 | 40 | 20 |
Nonload-bearing walls | Clay units | 100 | 50 | 60 | 40 |
Concrete units | 50 | 25 | 30 | 20 |
[DAGGER]Jointing required is a minimum and is not intended to prevent minor cracking. The distances given for maximum spacing of joints are for a single wall plane. For composite walls, the maximum spacing of joints shall be governed by the masonry material type used in the exterior wy the.
Wis. Admin. Code Department of Safety and Professional Services § SPS 362.2109
CR 00-179: cr. Register December 2001 No. 552, eff. 7-1-02; CR 10-103: r. (2), Table 62.2109-1, renum. (3) to be (2), Table 62.2109-2 to be Table 62.2109 and am. (2) (b) Register August 2011 No. 668, eff. 9-1-11; correction in (2) (b) made under s. 13.92(4) (b) 7, Stats., Register December 2011 No. 672.