Hairpin™ Wheel Spacer Extender
Hairpin™ rebar spacer extenders are used in tandem with the ShaftSpacer® wheel in order to achieve eccentric spacing requirements and/or meet seismic design considerations.
When should you consider using the Hairpin™ Wheel Spacer Extender?
Unusual Design Clearance
Example: the project specification and detail states 9 inch clearance. To achieve this clearance with a wheel alone, the wheel would need to have a diameter of approximately 18 inches. By using a Hairpin™ wheel extender in conjunction with one of our standard model ShaftSpacer® wheels, the 9 inch clearance can be achieved.
Close Spacing of Horizontal Rebar
Example: the project specification and detail states 6 inch clearance, but the pitch of the spiral is 4 or 5 inches. Therefore, the ShaftSpacer® wheel that is normally used for 6 inch clearance is too large and will not attach without interfering with the adjacent spiral bars. A Hairpin™ Wheel Spacer Extender is then used to resolve the problem.
Working on a drilled shaft project? Our Sonitec® crosshole sonic logging (CSL) tubes allow for sonic structural integrity testing of concrete within drilled shafts. The CSL method has been used for more than 30 years and is the most requested method for foundation integrity testing by the Department of Transportation (DOT) and professionals throughout the construction industry.
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