Railroad crossing signal foundation

Details Railroad crossing signal foundation Railroad crossing signal foundation

1991-10-15

1993-11-02

Safavi, Michael

Static structures (e.g., buildings)

Footing or foundation type

Concrete type

52301, 52742, 405252, E02D 2742, E04G 2114

Patent

active

052574890

ABSTRACT:
A railroad crossing signal foundation 10 comprises a base 11 having a lower concrete slab 15' to which a set of upright guide rods 18 is mounted and upper concrete slabs 15 supported upon the lower slab through which the guide rods extend. A pillar 12 is mounted upon the base that has concrete blocks 16 through which the guide rods extend. The pillar blocks have a support area size substantially less than the support area size of the base slabs such that the pillar may be erected with workers standing upon the base. A concrete crown 13 is mounted upon the pillar through which the guide rods extend. The weight of the foundation components is such that the center of gravity of the foundation is located in the base.

REFERENCES:
patent: 178438 (1876-06-01), Hill
patent: 1447942 (1923-03-01), Fitzgerald
patent: 1529895 (1925-03-01), Chance et al.
patent: 2282251 (1942-05-01), Schwendt
patent: 2367146 (1945-01-01), Siebs
patent: 2373798 (1945-04-01), Williams
patent: 2374624 (1945-04-01), Schwendt
patent: 2381014 (1945-08-01), Thornley
patent: 2917901 (1959-12-01), Lackner
patent: 4592678 (1986-06-01), McNinch, Jr. et al.
patent: 4704052 (1987-11-01), Aubert

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