Prestressed Concrete
Application Suggestions 1. Vibrators are placed 5 to 10’ apart on alternate sides of form. Spacing depends on height of form and slump of concrete. Start by mounting vibrators 2 to 3’ from the ends, 16 to 24” from bottom. 2. Start vibrators when concrete reaches 6 to 10” above them. Keep on vibrating until a flattened glistening surface appears on top and no more air bubbles break on surface. 3. The most popular vibrators for the prestressed and precast industries where a large mass of concrete has to be vibrated are the high frequency pneumatic SVR line. An alternative in the electric line is the 2P, 3600 rpm, 3-phase units. *Based on 3-5” slump concrete; steel form; average” conditions. Other shapes and conditions see "General Guide" on next page.

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Ornamental Concrete    Concrete Vibratory Tables    Concrete Walls    Concrete Columns    Concrete Septic Tanks and Vaults    Concrete Steps    Tampers and Trowels    Screeds    Precast Forms    Concrete Pipes    Manholes and Box Culverts    Concrete Tunnels    75 STILSON RD, P.O. Box 8 WYOMING, RI 02898 Phone: (401) 539-2392 (800) 633-0032 Fax: (401) 539-2584 E-Mail:vibrators@vibco.com