PT tendons are susceptible to corrosion from water and chloride (salt) ingress in similar ways as conventional reinforcing steel. However, unlike conventionally reinforced concrete, the effects of corrosion can result in the tendons losing tension and the concrete losing pre-compression.
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Considering GPTP is a relatively thin material compared to its overall dimension, its units are subject to bending fracture during movement and setting and, as such, require a suction-cupped frame for proper handling.
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Power washing a facade with water is often considered a simple, low-cost way to remove minor soiling. Although this is an effective cleaning method on many substrates, using a water pressure that is not properly controlled and limited to levels appropriate for the materials present can cause damage to...
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Designers need to understand how the characteristics of historic materials may have allowed a detail to function successfully when originally constructed, and that repair or replacement with present-day materials may require changes to the detail.
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When developing roof drainage details, designers need to consider not just typical conditions and geometries, but also atypical or transitional geometries that may concentrate or direct water flow in unexpected ways.
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A primary design goal for any building enclosure should be to minimize the infiltration of bulk water into the intended dry zone of the various enclosure assemblies for the duration of their anticipated service life. Significant and/or recurring water infiltration can adversely affect moisture-sensitive materials and the overall performance...
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Since many of these historic structures were designed using empirical methods and not engineering mechanics, many times there are both deficiencies in the truss configuration and the masonry buttresses to resist the outward movement.
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Without clear specification at bidding time, those pursuing LEED v4.1 certification may be missing an opportunity to ensure the Division 8 fenestration systems are manufactured with recycled content and supported with required documentation.
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For most commercially available fenestration systems, test reports outlining the performance attributes of the system—verified through laboratory testing—are available from the manufacturer.
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Stainless steel is commonly used to provide architectural metal fabrications that are corrosion resistant without the need for paint or other coatings.
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