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    Excavation Terrain Object Classes.
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    Soils can be classified into four groups: solid rock, Type A, Type B, and Type C. Solid rock is the most stable, while Type C soil is the least stable. Type A soil is the most stable soil in which to excavate. If you are unsure of the soil type, always assume it is Type C. Soil removed from a trench must be kept at least two feet back from the edge of the trench.
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    Trenching—Soil types - IHSA
    The foreperson or supervisor on a project must be knowledgeable about soil types and plan protection accordingly. There are four general types of soil—from dry, dense, and hard (Ty…
    www.ihsa.ca
    https://www.ihsa.ca › pdfs › safety_talks › trenching_soil_types.pdf
    Trenching Safety | OSHA Safety Manuals
    OSHA classifies soil into four groups: solid rock, Type A, Type B, and Type C. Solid rock is the most stable, with Type C soil being the least stable. If you are unsure of the soil…
    OSHA Safety Manuals
    https://www.safetymanualosha.com › trenching-safety
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    Soil Types | Environmental Safety | Murray State
    OSHA classifies soils into four categories: Solid Rock, Type A, Type B, and Type C. Solid Rock is the most stable, and Type C soil is the least stable. Soils are typed not only by …
    Murray State University
    https://www.murraystate.edu › about › Offices › esh › OccupationalSafetyHealth › TrenchingShoring › SoilTypes.aspx
    Soil Classification | Transcript | Occupational Safety and Health ...
    Soils can be classified as Type A, Type B, or Type C. Type A soil is the most stable soil in which to excavate. Type C is the least stable soil. It's important to remember that a t…
    Occupational Safety and Health Administration
    https://www.osha.gov › vtools › construction › soil-testing-fnl-eng-web-transcript
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