Trench shoring box unit

Details Trench shoring box unit Trench shoring box unit

1987-02-24

1988-06-21

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

E02D 1708

Patent

active

047521570

ABSTRACT:
A trench shoring box unit having hollow partition walls and internal support webs. The partition walls positioned spaced apart and facing each other and connected together by adjustable length braces. The partition walls are constructed of aluminum and have a tongue-and-groove joint formed on the longitudinal edges for interlocking with adjacent partition walls. The transverse edges of each partition wall tightly engages a recess formed on one side of shoe bars. A flange is formed on the other side of the shoe bar and projects outwardly beyond the surface of the partition wall along the transverse edge. The adjustable length braces are connected to the flanges.

REFERENCES:
patent: 3937026 (1976-02-01), Krings

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