10 Questions You Should to Know about Concrete Reinforcing Rebar Support Chairs

I have recently received information from an associate whom has just returned from the ConExpo. During the Expo he was approached by several people enquiring as to the extruded plastic rebar support ( bar chairs ) he was he using in an exhibit. He was queried as to where he obtained these plastic rebar support ( bar chairs )as they had not seen anything similar in the States. If this is the case what method is employed to hold the rebar in position. G'day Boffintech

Within Australia plastic bar chairs are used extensively in suspended slabs, beams and columns. I have never experienced any failure of the plastic bar chairs, nor have I ever heard of a failure. The plastic bar chairs are more than capable of supporting both materials and men.

Can you direct me to a supplier or manufacturer of plastic rebar chairs within the States as I'm interested as to the differences between the chairs as used within each country.

Thanks for the information. Never heard of a broken plastic rebar support chair? Amazing.

All I can tell you is that I inspect suspended slabs daily, and as a result I see broken plastic rebar support chairs daily. I'll take some digitals and see if I can post them. The worst ones are the ones over 6 1/2" because they are made up of two chairs zip-tied together. Any kind of twisting or lateral loading and they just pop apart of fold up. G'day boffintech

Thanks for the information.

The problems I have encountered with the plastic tipped metal bar chairs is the tendency to tip over due to the small footprint plus they are only designed to carry one bar. The plastic chairs are combinations where both top & bottom steel of the mat can be carried with a single chair.

Metal tipped bar chairs are available and utilized by some people given the size of bar chairs range from 20 mm to 360 mm high. The metal chairs are commonly used during slab on ground construction

More and more often, requests are coming in for very thick concrete floors. For thicker floors, the usual lattice girders are not sufficient, but a lattice girder is still required. A reinforcement chair can be used for this.

Trico supply professional and honest service.

What is a reinforcement chair?

Reinforcement chairs look like bars bent into a Z or inverted U reinforcement. They contribute to the stability of the reinforcement bars during the pouring of concrete.

Why do you use reinforcement chairs?

By using a reinforcement chairs, you ensure that the desired distance is maintained between reinforcing bars or reinforcing mesh on concrete floors.

More specific:

The reinforcement stays in place.

Contact us to discuss your requirements of Concrete Reinforcing Rebar Support Chairs. Our experienced sales team can help you identify the options that best suit your needs.

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• The distance between the top and bottom reinforcement is maintained.
• It increases the stress capacity of concrete.

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The reinforcement chairs hold the reinforcement firmly in place, so that the concrete can properly enclose the reinforcement from all sides.

When do you use reinforcement chairs?

You use reinforcement chairs when a very thick floor is required.

 Examples are:
- Civil projects such as the construction of a bridge.
- Silo and tank foundations that are subject to heavy loads.
- Halls where heavy machinery is to be placed.
- A local weighting of a floor.
- Projects where heavy/thick footings are used for a steel construction.

Now also in our webshop!

Because of the increasing demand, now also easily available online.

The reinforcement chairs start from 310mm up to 500mm per, 10mm increasing for the right distance between the bottom and top reinforcement of the concrete floor.

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