Figure 1-4. - Alphabetical index of facilities.

material, or stored material; and vibration from equipment, blasting, traffic, or other sources.

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.

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

PROJECT PLANNING

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 planning package.