What Type Of Soil Cannot Be Benched (2023)

1. What Type of Soil Cannot Be Benched in Excavation?

  • Nov 25, 2019 · Type C soil cannot be benched. Appendix B does not permit an employer to bench a type C soil excavation. Therefore, it is not safe to cut ...

  • What Type of Soil Cannot Be Benched in Excavation? Type C soil cannot be benched.

2. Soil Classification and Excavation Safety - Incident Prevention

  • Feb 12, 2013 · Examples include clay, silty clay, sandy clay and clay loam. Type A soil may also be “benched,” or set at specific angles for employee ...

  • An excavation – the act of creating a man-made cut, cavity, trench or depression in the earth’s surface – is one of the most hazardous activities that we deal with in construction. This Tailgate will shed light on proper soil classification, slope angle calculations and a simple rule that will help your employees make safe […]

3. OSHA Requirements and Standards for Excavation and Trenching

  • Sep 1, 2023 · Type C soils cannot be benched, and if there is not enough room to slope the sides you must use a properly designed shoring system or a ...

  • Learn about the OSHA regulations and best practices for safe and compliant digging in excavations and trenches.


  • Soil may be considered unfissured if the soil is dry and beaks into clumps but cannot be easily broken ... Supplemental Sloping and Benching Information ( ...

5. Excavation Protect: Choosing the Correct System - Trinity Safety Group

  • Oct 25, 2018 · Benching is only feasible on type A and type B soils, you cannot bench type C soil. Benching must be constructed in accordance with OSHA's ...

  • By: Dylan Hipple CHST, GSP

6. Excavation and Trenching Safety Guideline - hsse world

7. What is Benching In Excavation and The Design Requirements

  • Jul 1, 2023 · Soil analysis is a critical component. Soils are classified into various types, typically Type A, B, and C, with Type A being the most stable ...

  • Learn about benching in excavation, a safety technique involving horizontal steps to prevent cave-ins, and the key design requirements for its implementation.

8. [PDF] SECTION 25 - U.S. Army Corps of Engineers

  • Projected soil type and method of testing to determine soil type; h. Planned method of shoring, sloping and/or benching; i. Planned method for confined space ...

9. Trenching and Excavation Toolkit - NAHB

  • NOTE: Benching cannot be done in Type C soil, which is the least stable soil type. Sloping involves cutting back the trench wall at an angle inclined away ...

  • Working in trenches and excavations can be one of the most dangerous construction operations. This toolkit helps home builders comply with OSHA's Excavation and Trenching Standard, designed to protect workers from hazards such as soil cave-ins, falling into trenches and hazardous atmospheres.

10. Excavation Safety- Instructor Version - eLCOSH

  • There are three soil types that you may encounter in Oregon: (1.) Type A soil is very stable. Clay is an example. (2.) Type B soil is less stable than type A ...

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11. [PDF] Excavations - Safe practices for business owners and contractors

  • Benching in type C soil requires a registered professional engineer. Shoring ... Soil cannot be classified type A if it has been previously disturbed. Use ...

12. 1541.1. Requirements for Protective Systems.

  • (B) Slopes specified in Section 1541.1(b)(1)(A) shall be excavated to form configurations that are in accordance with the slopes shown for Type C soil in ...

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13. 29 CFR Part 1926 Subpart P -- Excavations - eCFR

  • Granular soil cannot be molded when moist and crumbles easily when dry. ... (4) Example 4: A trench is dug in previously disturbed Type B soil, with ...

  • 40 U.S.C. 333; 29 U.S.C. 653, 655, and 657; Secretary of Labor's Order No. 12–71 (36 FR 8754), 8–76 (41 FR 25059), 9–83 (48 FR 35736), or 1–2012 (77 FR 3912), as applicable; and 29 CFR part 1911.

14. [PDF] Soil classification for construction practice in shallow trenching - GovInfo

  • Simplified Soil Classification System. Steepest Slope. Soil Type. Description ... A soil that cannot stand vertically for at least 10 minutes should not be ...

15. [PDF] Excavations: Shoring and Trenching - SUNY Geneseo

  • The sides of a trench cannot extend over the top of the trench box. Sloping ... The type of soil determines the horizontal to vertical ratio of the benched side.

16. Type B may be simply sloped or benched. - ppt video online download

  • Type C soil cannot be benched. (even if incorrectly identified as Type B) No sloping or benching when deeper than 20 feet. Unless a Registered Professional ...

  • Type B may be simply sloped or benched. “All simple slope excavations 20 feet or less in depth shall have a maximum allowable slope of 1 : 1.” ( 45 degrees )

17. [PDF] A Guide to the OSHA Excavation Standard

  • The type of soil determines the horizontal to vertical ratio of the benched side. ... In addition, uniform “preloading” cannot be achieved with screw jacks, and ...

18. [PDF] Excavation-Guidelines.pdf - Wyoming Department of Workforce Services

  • These destabilizing factors will make any good soil into bad soil, i.e., Type A to Type B or C. ... SLOPING AND BENCHING. Page 9. Page 10. Page 11. Page 12. WHAT ...

19. Trenching and Excavation - CCOHS

  • Has the soil type been considered when determining the angle of the slope? · Are they being sloped or benched back to a safe angle?

  • What is meant by a trench and an excavation? Generally speaking, an excavation is a hole in the ground as the result of removing material.

20. What is Benched Excavation? - Definition from Trenchlesspedia

  • Feb 5, 2020 · Type B soil: These are cohesive soils such as angular gravel, silt, silt loam, disturbed soils (unless classified as Type C), with an unconfined ...

  • This definition explains the meaning of Benched Excavation and why it matters.

21. WAC 296-155-657: - WA.gov

  • (ii) Slopes specified in item (i) of this subdivision, must be excavated to form configurations that are in accordance with the slopes shown for Type C soil in ...

  • Requirements for protective systems.

22. Trenching and Excavation Competent Person Responsibilities - Urbint

  • Often cracked or disturbed, Type B is cohesive, but pieces don't stick together as well as Type A. The least stable type of soil, Type C has both granular soils ...

  • A trenching and excavation competent person ensures all OSHA excavation standards are followed correctly to prevent excavation hazards like cave-ins.

23. [PDF] Compliance Directive for the Excavation Standard, 29 CFR

  • Jan 20, 2022 · The horizontal to vertical ratio of the benched side is determined by the type of soil. ... data cannot be used, the designs must be in accordance ...

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