Shear bolt connected precast concrete units

Details Shear bolt connected precast concrete units Shear bolt connected precast concrete units

E - Fixed Constructions

04

B

E04B 1/38 (2006.01) E01C 11/02 (2006.01) E01D 19/12 (2006.01) E01D 22/00 (2006.01) E04B 1/04 (2006.01) E04B 1/41 (2006.01) E04C 5/16 (2006.01) F16B 5/00 (2006.01) F16L 9/08 (2006.01) F16L 25/00 (2006.01)

Patent

CA 2090520

SHEAR BOLT CONNECTED PRECAST CONCRETE UNITS ABSTRACT OF THE DISCLOSURE An apparatus for joining precast concrete units. A precast concrete unit, such as a section of pipe, decking and pavement includes a plurality of spaced, longitudinally aligned tubular members. The ends of each concrete unit are flush and are bounded by rounded edges to prevent chipping. The ends of the tubular members are flush with the end of the concrete unit. When two of such units are to be joined together, a guide member is inserted in one end of each tubular member on one concrete unit while an internally threaded insert member is inserted into each end of the tubular member in a second concrete unit. The guide members and insert members have axial apertures with the aperture in the insert member being internally threaded. The two precast concrete units are brought together so that the guide member on one concrete unit enters into the ends of the tubular members containing the inserts in the second concrete unit. A bolt is passed through each guide member and is threaded into the internally threaded aperture in the insert member. The bolts are tightened to join the two precast concrete units together. A resilient gasket can be cast into one end of a concrete unit when it is formed or can be inserted into a groove which is formed in a face of a precast concrete unit at the time it is formed. The gasket used in the groove is U-shaped and a resilient cord is inserted to the bottom of the groove to spread the sides of the gasket to securely lock it in place in the groove. The method of assembling precast concrete units is also disclosed. -31-

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