Rebar Support Chairs SPEC SHEET

PRODUCT: Rebar Support Chairs/Post-tension chairs

MATERIAL: Polypropylene plastic (MSDS sheet attached)

PRODUCT DUCT DESCRIPTION: Plastic rebar chairs are used to support reinforcing bars in reinforced concrete. They may be used to support horizontal reinforcing steel, wire mesh or post tension cable.

ADVANTAGES:

CODE APPROVAL: Support chairs have been approved by the Iowa Department of Transportation. In order to be approved by I.D.O,T., supports must meet or exceed the load carrying capacity of the steel wire supports.

TESTING PROCEDURE: The testing procedure involves determining a point load limit for all supports. the point load limit is determined by placing #4 reinforcing bar on the support. The support is then placed on a 3/4" piece of fir plywood. A load is applied to the bar at a rate of .5" deflection per minute until the support fails. Point loads are determined at the weakest point on continuous supports.

Chair Sizes
Maximum Load (lbs.)
1-1/2"
1085
2"
1400
2-1/2"
1146
3"
1062
3-1/2"
1199
4"
1150
4-1/2"
349
5"
384
5-1/2"
403

INSTALLATION: Rebar chairs should be installed by laborers who are experienced with reinforcing steel placement. Maximum spacing of chairs should not exceed 48-inches. Comply with applicable codes and structures design criteria for minimum spacing of reinforcement from edges of forms.

Chair Data


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