Injury Illness Prevention Plan - Flipbook - Page 201
Health and Safety Program Manual
Teamwrkx
Construction, Inc.
Issue Date: 10/16/23
Revision Date: 10/16/23
Trenching and Excavation
Reference: A-15
PENETROMETER or SHEARVANE TEST Note: Used to estimate unconfined compressive strength of
cohesive soils.
Test Performed
Yes
No
Device Used / Serial Number:
Soil with unconfined compressive strength of 1.5 tsf of greater
Type A
Soil with unconfined compressive strength of greater than 0.5 tsf and less than 1.5 tsf.
Type B
Soil with unconfined compressive strength of 0.5 tsf or less. Note: if the soil is
Type C
submerged, seeping water, subjected to surface water, runoff, exposed to wetting.
No soil is Type A if fissured, subject to vibration, previously disturbed, layered dipping into excavation on a
slope of 4h: 1v
SOIL CLASSIFICATION
Stable Rock
Type A
Type B
Type C
SELECTION OF PROTECTIVE SYSTEM (Refer to Appendix F of 29CFR1926)
Sloping (Appendix B)
Timber Shoring
Trench Shield
Hydraulic Shoring
Specify angle:
(Appendix C)
Max depth in this soil:
(Appendix D)
Keep one copy of each Soil Analysis Checklist on site for project duration – Forward original to
the Safety Director at the Main Office
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