Concrete Construction
- Accessory Products For Concrete Works
- Cement Spacers
- Cement Spacer Technical Information
- Chair Spacers For Reinforcement
- Dowel Bar Sleeves
- Grade Plate Spacers
- Pile Cage Spacer
- Reinforcement Bar Safety Caps
- Technical Data For Plastic Spacer Chairs And Wheels
- Wheel Spacers For Reinforcement
Fixing Products
Wall Tie Accessories
Damproofing & Remedial
Scaffolding Accessories
Heavy Duty Plastic Shim
Plastic Packers
Technical Data For Plastic Spacer Chairs And Wheels
To achieve the required cover to reinforcing steel according to BS8110, BS5400 and BS8007, spacer chairs or wheels must be used according to a standard method of application. The spacers manufactured by Techmarkets are of the plastic "clip on" type, in wheel or chair form. Spacers are available to give cover to a range of bars in nominal steps, typically 15, 20, 25, 30, 35, 40, 45, 50 and 60mm. Plastic chair spacers NC and NP are used for spacing of lower reinforcing steel in slabs and beams, the NW wheel spacers are for vertical reinforcing steel in walls and columns.
To ensure correct positioning of the steel, spacers must be placed according to the recommended pattern and the load capacity of the individual chair.
Maximum applied vertical load per chair: NC = 0.40Kn NP = 0.80Kn
CHAIR SPACING FOR SLAB CONSTRUCTION (d = bar diameter)
Plan for Individual Bars
WHEEL SPACING IN COLUMN CONSTRUCTION (d = bar diameter) Spacers to be fixed vertically to links at top, middle and bottom of each lift, at centres not exceeding 100 x d.
