Oldcastle Precast, Inc.

George Clinton Brookhart

Paul B Miller

James A Baker

Daniel M Nyce

Kelly Patterson

A prefabricated concrete pole base and adjustable method of connection and use to receive, support, and stabilize light poles and the like having different hole mounting patterns, securing the pole to the base and facilitating rapid installation of poles while eliminating the need for on-site concrete forms and lengthy concrete cure times.

Prefabricated concrete pole base and adjustable connector

The present invention discloses a precast railway crossing slab adapted to extend transversely across the surface of conventional railway ties, with slots or gaps dimensioned and disposed to receive a pair of railway rails therethrough. The crossing slab includes a post-tensioning system in which metal cable strands or tendons are sheathed within plastic tubes and are positioned in the slab mold frame prior, to pouring of concrete. Tendon anchors are also disposed in the slab mold frame prior to pouring. After the concrete hardens, a hydraulic jack is used to tension and anchor the tendons in a stressed condition, thus providing reinforcement to the slab. The railway crossing slab of the present invention may be utilized with or without surface or edge metal plating. Flange way fillers which typically comprise rubber strips extending between the sidewalls of the metal rail and the concrete slab may optionally be employed. The slab may be formed integrally with grooves to receive the rails, or alternatively may take the form of three separate slabs provided with screw holes for securement to conventional wooden or concrete railway ties.

Precast reinforced concrete railway crossing slab

The present invention discloses a precast railway crossing slab adapted to extend transversely across the surface of conventional railway ties, with slots or gaps dimensioned and disposed to receive a pair of railway rails therethrough. The crossing slab includes a post-tensioning system in which metal cable strands or tendons are sheathed within plastic tubes and are positioned in the slab mold frame prior to pouring of concrete. Tendon anchors are also disposed in the slab mold frame prior to pouring. After the concrete hardens, a hydraulic jack is used to tension and anchor the tendons in a stressed condition, thus providing reinforcement to the slab. The railway crossing slab of the present invention may be utilized with or without surface or edge metal plating. Flange way fillers which typically comprise rubber strips extending between the sidewalls of the metal rail and the concrete slab may optionally be employed. The slab may be formed integrally with grooves to receive the rails, or alternatively may take the form of three separate slabs provided with screw holes for securement to conventional wooden or concrete railway ties.

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Littleton, CO, United States of America

George Clinton Brookhart