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Brick Veneer Bowing Cary NC

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

Stonebridge Yards
(919) 267-5121
109 Parkcanyon Ln
Cary, NC
 
Bill Ibison Stone Company Llc
(919) 851-3835
2509 Piney Plains Rd
Cary, NC
 
Carolina Stone Setting
(919) 467-4693
603 Page St
Cary, NC
 
Pinnacle Masonry Inc
(919) 469-4522
101 Brady Ct Ste A
Cary, NC
 
Vandergriff Masonry
(919) 906-0741
11457 Claybank Place
Raleigh, NC
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Brick, Stone, Concrete, Repairs, Retaining Wall, Step, Patio, Walk, Fireplace, Column, Point up, Masonry Cleaning, Sealing, Chimney, Lattice, Fence, Stairs, Foundation, Veneer, Repair
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Byrd & Goff Construction Co
(919) 854-0800
202 Travis Park
Cary, NC
 
Residential Construction Services Inc
(919) 467-4335
118 E State Ave
Cary, NC
 
Vertical Walls
(919) 468-0313
104 Woodwinds Industrial Ct Ste D
Cary, NC
 
American Chimney Sweep Co A
(919) 467-5088
303 Trappers Run Dr
Cary, NC
 
Moore'S Masonry Contracting
(919) 361-3060
5505 Kemmont Dr
Durham, NC
 

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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