Isaac Kremer/ September 9, 2018/ / 0 comments
A grade of load-bearing concrete masonry unit limited to use above grade, in exterior walls with weather-protective coatings, or in walls not exposed to the weather. (Ching, 1995)
Your email address will not be published. Required fields are marked *
Δ
This site uses Akismet to reduce spam. Learn how your comment data is processed.