Excavation, Trenching, and Soil Mechanics

11/1/01


Click here to start


Table of Contents

Excavation, Trenching, and Soil Mechanics

Points To Be Covered:

DANGER!

PPT Slide

PPT Slide

Fatal Facts!

PPT Slide

1926.650-Scope and Application

What Is Soil?

Weighing in on Soil

Mechanics of a Cave-In

Diagram of a cave in

PPT Slide

Protecting Employees in Excavations

Protective Systems

So We have Options:

29 CFR 1926.652(b)(4)(i)

Competent Person

1926.651(k)(1) Inspections

Access and Egress 1926.651 (c)(2)

Soil Tests

Visual Test

Manual Tests

Thumb Penetration Test

SOLID ROCK

Type A Soil

A Soil is NOT type A IF:

Sources of Vibration

Type B Soil

Type C Soil

Sloping Requirements by Soil Type

Sloping in Type A Soil

Sloping in Type B Soil

Sloping in Type C Soil

Trench Boxes or Shield Systems:

Trench Boxes or Shield

Is this allowable?

Trench Boxes and Sloping or Benching

PPT Slide

PPT Slide

PPT Slide

Shoring (Shoring System)

Hydraulic Shoring

Stacked Hydraulic Shores

Whaler System

Surface Encumbrances

Utilities

Locates

Can an Excavation be a Confined Space?

Summary

Author: Mark Hodges

Download presentation source