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Excavations and Shoring | Up
Construction Electrician Intermediate - Electricity handbook for electricians | Next
Figure 1-6.—Approximate angle of repose. |
Figure 1-4.—Alphabetical index of facilities.
material, or stored material; and vibration from
equipment, blasting, traffic, or other sources..
PROJECT PLANNING
Materials used for sheeting and sheetpiling,
bracing, shoring, and underpinning have to be in
good serviceable condition. Timbers must be sound
and free from large or loose knots and must be
designed and installed to be effective to the bottom of
the excavation.
Throughout the life of a project, information that
reflects the complete history and requirements for that
project is being accumulated and updated. The project
package is the collection of all information required to
plan, schedule, monitor, and execute a project. During
the construction phase of a project, inspection reports,
field change reports, and numerous items of project
Cross braces or trench jacks must be placed in
correspondence are added to the project package to
true horizontal position, be spaced vertically, and
complete the project history file. This file is con-
be secured to prevent sliding, falling, or kickouts.
tinually updated until the project is completed. The
Minimum requirements for trenching timbers are
most critical part of this project package is the project
shown in figure 1-7.
planning package.
1-7
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