Galvanized Wall Ties Salisbury MD

Do wall ties need to be galvanized in solid masonry walls in Salisbury? The steel used in concrete is typically not coated. Wouldn't solid masonry offer protection similar to that offered by concrete?

Aes Architech Llc
(410) 543-4595
110 West Church Street Suite A
Salisbury, MD

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Fisher Architecture
5928 Morgans Way
Salisbury, MD
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Maurice Chyke & Associates, Inc.
902 W. Main Street,P.O. Box 1456
Salisbury, MD
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Delaware, District of Columbia, Georgia, Maryland, Virginia
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Davis, Bowen & Friedel, Inc.
One Plaza East,Suite 200
Salisbury, MD
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American Institute of Architects

Archt Wireless Holdings
(410) 749-0691
7757 Jersey Rd
Salisbury, MD
 
Design Atlantic Ltd.
130 East Main Street
Salisbury, MD
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Delaware, District of Columbia, Maryland, Pennsylvania, Virginia
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Todd & Associates Inc., Architects
(410) 749-2447
753 Richwil Dr
Salisbury, MD
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American Institute of Architects

Hayes Architecture, Inc.
1323 Mount Hermon Road,Suite 4B
Salisbury, MD
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American Institute of Architects

David D. Quillin Architecture
5705 Waterside Drive
Berlin, MD
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American Institute of Architects

Andrew W Booth & Associates
(410) 742-7299
1942 Northwood Dr
Salisbury, MD
 
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Galvanized Wall Ties

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Source: MASONRY CONSTRUCTION MAGAZINE
Publication date: October 1, 1998

Do wall ties need to be galvanized in solid masonry walls? The steel used in concrete is typically not coated. Wouldn't solid masonry offer protection similar to that offered by concrete?
There is a substantial difference between the protection to steel offered by masonry and that offered by concrete. In concrete, the fluid cement paste completely covers the bars. In masonry, the steel is often dry-laid on the units and the mortar placed on the top. Therefore, the bars are not always encased completely in mortar. Sometimes there are voids along the bottom of the bars, which can allow condensation and moisture to accumulate.The corrosion potential of the steel is also affected by material porosity and diffusion rates of harmful ions (such as chlorides). Bare steel is protected initially by a passivating layer that forms in the highly alkaline environment of wet concrete or mortar. Carbonation will reduce the alkalinity of the mortar or concrete and eliminate this protection. Mortars, being more porous than concrete, will carbonate at greater rates. There is also greater potential for diffusion from chloride ions from acid cleaning or other sources. Depending on their concentration, chloride ions will eliminate the pacifying effect of the mortar. For these reasons, unprotected steel encased in mortar will have an increased corrosion potential at a young age.Requirements for concrete or mortar cover...

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