Name:
OSHA 29 CFR 1926.651
Excavations Subpart P
1. During excavation operations, what must be done with surface
encumbrances?
2. What must be done about underground installations prior to opening
an excavation?
3. After notification of utility companies, if they cannot respond within a
certain amount of time or as specified by local laws, when can excavation
operations begin?
4. Structural ramps used for access or egress of equipment shall be
designed by whom?
5. A means of egress from trenches 4 ft or more in depth shall be
provided within how many lateral feet?
6. What must be done to protect employees exposed to public vehicular
traffic?
7. Any trench deeper than how many feet must be tested for oxygen
deficiency?
8. Any flammable gas within a percentage of the lower flammable limit
shall be addressed with appropriate measures. What percent of the lower
flammable limit is applicable?
9. Emergency rescue equipment is indicated in the case of employees
entering bell-bottom pier holes or other similar deep and confined footing
excavations. What constitutes proper rescue equipment at a minimum?
10. What is the general rule about employees working in trenches where
water is or has accumulated?
11. If an excavation is adjacent to a building or footing, what precautions
must be taken?
1 of 3
2/9/2016
Name:
OSHA 29 CFR 1926.651
12. OSHA considers workers to be protected from falling rocks if the
spoils pile is located how far from the edge of the excavation?
13. Competent person inspection of excavations shall be conducted
before every shift and when else?
14. Where employees or equipment are permitted or required to cross
over excavations, what shall be provided?
15. Shoring may not be necessary in excavations less than how many feet
deep as long as a competent person inspects and finds no potential for a
cave in.
16. Excavation shall be sloped at an angle not steeper than what?
17. Designs by a professional engineer for sloping other than the above
shall be maintained at the jobsite for what duration?
18. What must be done with any damaged shoring material?
19. Removal of a shoring system shall begin where?
20. Excavation of material below the lowest level of a support system in
allowable in certain circumstances up to a maximum of how far?
21. Is it OK to open up a large trench before shoring begins?
22. Where do we look in the standard for help in soil classification?
23. Where do we look in the standard for help in selecting proper timber
shoring?
24. Where do we look in the standard for help in selecting proper sloping
and benching?
2 of 3
2/9/2016
Name:
OSHA 29 CFR 1926.651
25. Where do we look in the standard for help in selecting proper
aluminum hydraulic shoring for trenches?
26. For descriptive drawings of alternatives to timber shoring we can
look where in the standard?
3 of 3
2/9/2016