Application of Steel Strap Reinforcement to Girders of Rigid Frames, Special AMC Warehouses

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Title: Application of Steel Strap Reinforcement to Girders of Rigid Frames, Special AMC Warehouses

Author(s): Reinhart R. Lunoe and A. Willis

Publication: Journal Proceedings

Volume: 53

Issue: 1

Appears on pages(s): 669-678

Keywords: no keywords

Date: 1/1/1957

Abstract:
The test applications reported were made to develop a procedure for installing the steel strap reinforcement on full-scale girders in the field, and to work out solutions for any impractical features of the design specifications. Test applications were made on one rigid frame on which the roof deck had been placed and on one rigid frame without the roof deck. Buttering the inside of the corner protection angles with grout prior to clamping the angles in place was found to be the most practical method of insuring uniform bearing between the angles and the concrete girders. A standard model stretcher calibrated by a torque indicator attached to the operating handle is satisfactory for tensioning the straps to a reasonably accurate predetermined stress. Tapping the straps at the corners of the girder both during the tensioning operation and after sealing was necessary to develop higher stresses and to produce more nearly equal stresses in the straps on all sides of the girder.