Masonry Magazine February 1963 Page. 2
This is Dur-o-wal
The masonry wall reinforcement with the trussed design
Don't be misled by the common habit of calling all metal-rod reinforcement "durowal". Look for this trussed design. It distinguishes the real Dur-o-wal, insures maximum flexural strength, with all steel members effectively in tension and working together.
Impartial tests of 8" concrete block walls proved that truss-designed Dur-o-wal exceeds accepted standards-increases the horizontal flexural strength from 60 to 135 per cent, depending on the weight and spacing of Dur-o-wal used, and type of mortar.
An independent new research study shows that Dur-o-wal tied walls outfunction brick-header tied walls. Write to any Dur-o-wal address below for 44-page test report.
DUR-O-WAL
The Original Masonry Wall Reinforcement with the Truss Design
DUR-O-WAL MANUFACTURING PLANTS
Cedar Rapids, Iowa, P.O. Box 150 Baltimore, Md., 4500 E. Lombard St. Birmingham, Ala., P.O. Box 5446
Syracuse, N.Y., P.O. Вох 628 Toledo, Ohio, 1678 Norwood Ave. Pueblo, Colo., 29th and Court St.
Phoenix, Ariz., P.O. Box 49 Aurora, III, 260 S. Highland Ave. Seattle, Wash., 3310 Wallingford Ave.
Minneapolis, Minn., 2653 37th Ave. So. Hamilton, Ont., Canada, 789 Woodward Ave.
STRENGTH WITH FLEXIBILITY- basic masonry wall requirement is met for (and economically!) when Dur-a-ual, above used with the ready-made, self-lexing Rapid C trol Joint, below.