Uprights

Uprights means the vertical members of a trench shoring system placed in contact with the earth and usually positioned so that individual members do not contact each other. Uprights placed so that individual members are closely spaced, in contact with or interconnected to each other, are often called sheeting.

Source

29 CFR § 1926.650

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Scoping language

Scope and application. This subpart applies to all open excavations made in the earth's surface. Excavations are defined to include trenches.

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