Brick Veneer Bowing Warren MI

This is fairly common in masonry veneer high-rise buildings in Warren 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.

Builder Mike
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11193 E 13 Mile Rd
Warren, MI
 
Debacker & Sons
(586) 775-8700
21750 Schmeman Ave
Warren, MI
 
Marcel Construction
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26242 Grobbel Ave
Warren, MI
 
K C Masonry And Concrete Impressions
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6345 Product Dr
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Stone Doctor
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White Lake Twp
Sterling Heights, MI
 
A Ct
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25530 SchoenheRR Rd
Warren, MI
 
Expert Construction Co
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31056 Shawn Dr
Warren, MI
 
Silverado Construction Inc
(586) 758-2600
2055 E 9 Mile Rd
Warren, MI
 
All Pro Masonry
(586) 868-3860
4778 Dunkirk Ct
Sterling Heights, MI
 
Unique Pools & Masonry
(586) 610-9939
33567 Ryan Rd
Sterling Heights, 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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