Galvanized Wall Ties Baltimore MD

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

Allen & Associates Pa
(410) 783-1574
1441 Light Street
Baltimore, MD

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Architecture By Design
(410) 480-3210
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BASUHAIL ARCHITECTS PC
(646) 520-2542
11 W. Mount Vernon Place
Baltimore, MD
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JRS Architects, Inc.
2031 Clipper Park Drive,Suite 106
Baltimore, MD
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American Institute of Architects

Grieves Worrall Wright & O'Hatnick, Inc.
(410) 332-1009
800 Wyman Park Drive,Suite 300
Baltimore, MD
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Commercial facilities, Libraries, Municipal buildings, Museums, Schools K-12
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Architectural Design / Documentation, Historic Preservation, Programming, Space Planning, Sustainable Building Design
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American Institute of Architects

ADR Builders, Ltd.
1850 York Rd, Suite H
Timonium, MD
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Mueller Homes
7520 Main St
Sykesville, MD
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Custom Builder, Designer / Architect
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Brown, Craig & Turner Architects
100 North Charles Street,18th Floor
Baltimore, MD
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American Institute of Architects

Plan Z architects
3405 Greenway,Suite 104
Baltimore, MD
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American Institute of Architects

Kann Partners
(410) 234-0900
33 South Gay Street,Suite 400
Baltimore, MD
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Delaware, District of Columbia, Illinois, Maryland, New Jersey, New York, North Carolina, Virginia, West Virginia
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American Institute of Architects

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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...

Click here to read full article from Masonry Construction

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