Sizes
Williams 150 KSI bars are manufactured in 7 diameters from 1” (26 mm) through 3” (75 mm). All diameters are available in continuous lengths up to 50’ (15.2 m)
Steel Quality
Williams 1” through 1-3/8” 150 KSI bars are smooth, hot rolled, high strength prestressing steel. The bars are cold-stressed and stress relieved in strict compliance with ASTM A722 and AASHTO M275 Highway Specifications. The 1-3/4” through 3” 150 KSI bars are made from alloy steel that is hot rolled, quenched and tempered to meet to the prescribed mechanical properties of ASTM A722. Thorough inspection and traceability are carried out during all phases of manufacturing to assure the highest standards of quality.
Threads
All-Thread-Bars are cold rolled threaded to close tolerances under continuous monitoring procedures for quality control. Threads for Williams 150 KSI bar are specially designed with a rugged thread pitch wide enough to be fast under job site conditions and easy to assemble. They also have a smooth, wide, concentric, surface suitable for torque tensioning. This combination offers tremendous installation savings over inefficient, hot rolled, non-concentric thread forms. Threads are available in both right and left hand. Williams All-Thread-Bars are threaded around the full circumference enabling the load transfer from the bar to the fasteners to occur efficiently without eccentric point loading. Williams fasteners easily meet the allowable load transfer limitations set forth by the Post TensioningInstitute. Williams 150 KSI All-Thread-Bars and fasteners are machined to tight tolerances for superior performance and mechanical lock. Precision machining greatly reduces concern of fastener loosening or detensioning. Williams 150 KSI bars exceed the deformation requirements of ASTM A722. Williams special thread deformation pattern projects ultra-high relative rib area, much greater than conventional rebar. This provides for superior bond performance in concrete.
Tensile Strength & Working Loads
Williams 150 KSI bars are available with ultimate tensile strengths and working loads as displayed above. Safety factors and functional working loads are at the discretion of the project design engineer, however, test loads should never exceed 80% of the published ultimate bar strength.
Cutting (No Welding)
Williams 150 KSI All-Thread-Bar should not be subjected to the heat of a torch, welding or used as a ground. Field cutting should be done with an abrasive wheel or band saw.