Brick Veneer Bowing East Lansing MI

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

A & A Construction
(517) 367-0000
1039 1/2 S Pennsylvania Ave
Lansing, MI
 
R J Masonry
(517) 455-0099
1535 Linval St
Lansing, MI
 
Contractor'S Wall Repair Inc
(517) 882-8483
5218 South Waverly Road
Lansing, MI
 
Hanneman & Fineis Concrete Construction Inc
(517) 371-4053
16101 S US Highway 27 Ste 6
Lansing, MI
 
Alpha & Omega
(517) 349-8660
3654 Okemos Rd
Lansing, MI
 
Able Concrete Inc
(517) 371-4855
1305 S Cedar St Ste 105
Lansing, MI
 
Bashore Marco Masonry Inc
(517) 393-9704
6237 Aurelius Rd
Lansing, MI
 
Tozier'S Chimney Sweeping
(517) 372-7805
6141 Beechfield Dr Apt 203
Lansing, MI
 
Bornor Restoration Inc
(517) 482-1625
525 Filley St
Lansing, MI
 
Kennedy Masonry Inc
(517) 322-9310
6554 Sloan Hwy
Lansing, 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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