Increase Productivity with Haydite Lightweight Masonry Units
The masonry process is perceived to be one of
the most labor intensive aspects of construction today. Since masonry units (blocks) must
be handled and placed one-by-one, increased mason productivity is the key to effective
management of masonry construction. In tests conducted both in the field and at the
National Concrete Masonry Association Research and Development Laboratory, it has been
dramatically shown that the size and weight of masonry units are primary factors
influencing the speed at which blocks can be laid.
The test results confirm that lightweight block made with expanded shale, clay or slate
aggregate significantly increased mason productivity over heavyweight units,
especially when 24" units were used. These facts alone make lightweight block walls
cost competitive with any other wall system. But considering the reduced structural
loading, better fire rating, greater strength, and much better thermal insulating and
sound absorbing properties, lightweight concrete blocks are more than cost competitive.
They are cost effective.
The productivity gained with 8"x 8"x 16" (standard size) lightweight block is represented by the "Field Test" graph. Although productivity improvement varied from course to course, the graph shows there was a significant overall increase in productivity with the lightweight units. The Productivity Comparison Tables are based on laboratory data compiled during the construction of four wall sections. The figures shown reflect averages for all six courses of each wall section. Table 1 (Size Factor) compares 24" masonry units to l6" units.The table shows that the use of 24" masonry units significantly increases mason productivity: 39% with heavyweight units; 43.6% with lightweight units. InTable 2 (Weight Factor) the gains in productivity attributed to lighter weight are shown. Productivity increased 14.9% with 16" lightweight 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 l6" 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.
Request Information
Brooklyn, IN