Trenching and Shoring

What are 4 reasons for injury?

• Attitude, Lack of Training, Insufficient Enforcement & Costs

• Poor Posture, Negligence, Unsafe Conditions and Hazards

• Carelessness, Unsafe Practices, Inadequate Supervision & Risk

• Negligence, Unsafe Environments, Poor Maintenance and Hazards

What are Requirements for Protective Systems (Select all that apply)

• Discuss requirements for protective systems to be held by foreman at jobsite.

• Excavation less than 5 feet in depth may require shoring if there are indications of trench failure

• Excavations 5 feet or greater in depth, unless in entirely stable rock

• Tools needed for protective system (Ladder, Shoring, etc.)

[BLANK] Slide is when the top of the wall caves in and is a less severe version of a shear wall collapse

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2

[BLANK] happens when cubic yards of soil instantly fall.

Tags

NGSS.MS-ESS3-2

Which of the following are considered causes of Trench Failure?

• Sliding Failure

• Subsidence

• Toppling

• Cracking

• Boiling

Tags

NGSS.MS-ESS3-2