Brick Veneer Bowing Kalamazoo MI

This is fairly common in masonry veneer high-rise buildings in Kalamazoo where relieving angles are used without horizontal expansion joints. During construction, a small gap generally is left between the bottom of each relieving angle and the top of the brick below.

Paul Henes Masonry
(734) 769-0880
3687 Jackson Rd
Ann Arbor, MI
 
Kennedy Masonry Inc
(517) 322-9310
6554 Sloan Hwy
Lansing, MI
 
Van Houten Masonry Inc
(616) 364-4140
3755 4 Mile Rd Ne
Grand Rapids, MI
 
Marcel Construction
(586) 757-8392
26242 Grobbel Ave
Warren, MI
 
Hoffman Plastering
(734) 663-5262
872 Rose Dr
Ann Arbor, MI
 
Dunritebrick
(586) 738-7498
42356 Parkside Cir
Sterling Heights, MI
 
Masonry Aesthetics Group
(616) 742-9970
1350 Scribner Ave Nw
Grand Rapids, MI
 
Omega Construction & General Repair
(734) 665-8154
4042 Ann Arbor Saline Rd
Ann Arbor, MI
 
Stone Doctor
(248) 698-3161
White Lake Twp
Sterling Heights, MI
 
Grammatico Masonry
(734) 769-4101
435 Evergreen Dr
Ann Arbor, MI
 

Brick Veneer Bowing

Provided By:

Source: MASONRY CONSTRUCTION MAGAZINE
Publication date: July 1, 1993

On a 20-story brick-veneer building, the masonry is bulging and cracking at each relieving angle. The building has no horizontal expansion joints. Could the cracking result from brick expansion? What can be done?

This is fairly common in masonry veneer high-rise buildings where relieving angles are used without horizontal expansion joints. During construction, a small gap generally is left between the bottom of each relieving angle and the top of the brick below. As the masonry grows due to moisture and thermal expansion, the gap between the masonry and the shelf angle narrows. Mortar placed at the tip of the angle creates a solid bridge between the masonry above and below the relieving angle. This portion of the joint cannot compress. Resulting forces often cause bowing and spalling. Also look at tie placement. If the nearest ties are more than 12 inches above and below the relieving angle, bowing is more likely. Corrosion of the shelf angle also can cause bowing. Steelcorrosion products are larger than steel itself. This creates pressures that act on the wall similarly to moisture and thermal expansion. These problems are compounded if the building's frame shrinks over time as the masonry expands. Bowing and spalling can be prevented by leaving adequate space beneath each angle during construction. The size of these spaces depends on expected movement. Procedures for sizing joints are given in BIA Tec...

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