Masonry Magazine October 1978 Page. 27
Construction Group Selects
Knuth "Man of the Year"
Allan Knuth, president of Knuth Masonry, Inc., New Berlin, Wis., has been named "Construction Man of the Year" by the Allied Construction Employers Association. Shown bestowing the honor, titled the "William R. Morris Award," is Glenn E. Langer, past president of the association. Knuth was selected by the ACEA Awards Committee for his career-long leadership and service to the construction industry.
Knuth currently is president of the Mason Contractors Association of Milwaukee and vice president of the Masonry Institute of Wisconsin. A vivid pictorial example of Knuth's company's masonry skill was carried on the cover of the August, 1978 issue of Masonry and also appears in the present national advertising campaign of the International Masonry Institute.
Concrete Mat Foundation Cuts
Expense for Highrise Builder
Substituting a grade level concrete mat foundation for expensive pilings has saved Turnberry Isle Yacht & Racquet Club developers an estimated $400,000, according to geotechnical engineers for the luxury residential complex in Miami, Fla.
The project, which is next to the Intracoastal Waterway off Biscayne Blvd. at 199th St., includes twin 28-story concrete apartment towers, one with 288 and the other with 283 units. Langan Engineering Associates, Inc., Clifton, N.J., were faced with the problem of erecting high, heavy buildings on a site of loose sand and other material 60 feet deep, adjacent to the waterway.
To avoid installing pilings on bedrock, 50 to 60 feet below grade, the engineers specified excavating the area down to limerock, 15 feet below grade, and then backfilling it with uncompacted soil, using vibroflotation to vibrate it into a compact state. The site was then preloaded for three weeks with a 60,000-ton surcharge of earth which settled the site of one tower 10 inches and the other six inches. After that, the four-to-six-foot-thick reinforced concrete mat was poured at grade to support the concrete columns and shear walls.
Perlite
Filled Cavities
Conserve Energy.
Heat transmission can be reduced by 50% or more when silicone treated perlite loose fill insulation is poured into the hollow cores of concrete block or cavity type masonry walls. In fact, cavity walls of face brick and tile show a 63% reduction! But that's not all. Silicone treated perlite loose fill insulation is water repellent-indefinitely.
Specs call for a concrete block wall? Perlite loose fill insulation can help too! By filling the core holes with perlite loose fill insulation your fire rating will be doubled to 4 hours and your "U" factor improved by 54%. And you don't have to worry about permanence. Silicone treated perlite is inorganic and rot, vermin and termite proof. And it's non-combustible with its fusion point of 2300°F.
Even a veneer wall of brick and concrete block can show a 52% improvement in insulating value when filled with loose fill perlite. Don't worry about settling -silicone treated perlite supports its own weight in the wall without settling and it's easy to handle too! Thanks to its countless glass-like cells it's light-weight and easily poured. It's quick-it's inexpensive and it's permanent-the perfect material for insulating masonry walls.
Perlite Institute, Inc.
45 West 45th Street
New York, N.Y. 10036 212-265-2145