Masonry Magazine April 1993 Page. 13
Units, and 18.6% with 24" lightweight units as compared to heavyweight units of the same sizes. The test firmly establishes that masonry units of lighter weight and greater length dramatically increase mason productivity. Table 3 (Size & Weight Factor) compares the use of heavyweight 16" units to lightweight 24" units over the same time period. The result is an amazing 64.9% increase in productivity. Although not specifically identified in the test, it is logical to believe that the use of lightweight units reduces the long term fatigue experienced by masons during the life of a job. This should result in even greater increases in productivity and improved mason morale.
In short, the use of expanded shale clay or slate lightweight masonry units is better business 100% of the time. Construction with the speed of light. It's the smart way to conquer time and space.
Comments
"Using lightweight block, rather than heavyweight, has increased our production and quality of work, as well as created a better attitude and higher morale among our masonry crews. We also have less breakage with lightweight." Danny A. Batten, President Consolidated Masonry Systems, Inc. Garner, North Carolina
"As structural engineers for Wal-Mart Corporation it is our responsibility to help choose construction systems that are no compromise to quality or safety, and which lend themselves to rapid and economical construction. Concrete masonry units are attractive, economical, and provide fire safety, longevity, and lower insurance rates. They also have the structural capacity to carry gravity, wind and earthquake loads without backup support.
"We specify lightweight concrete masonry units for all Wal-Mart stores because masons may handle many more units per day without fatigue. Lightweight units weigh about 13 less than heavyweight units, so productivity is naturally increased. Maximum productivity is an advantage that we desire in each store built." Tom Wallace, P.E. Wallace Engineering Structural Consultants, Inc. Tulsa, Oklahoma
"With 8x8x16 inch lightweight masonry units we can see at least a 15% increase in mason productivity. With 12x8x16 inch lightweight units the increase is more like 35-40%. Time is money, and lightweight saves both." Bill Merillat Jayhawk Masonry Topeka, Kansas
Standard lightweight masonry units
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