Set Up; Machine Set Up - Barbco TRIBOR Series Operation Manual

MACHINE SET UP

DESIGNING THE JOB AND PREPARATION OF THE ENTRANCE PIT
When the job is in the planning stage, provide enough room for safe loading and unloading of
equipment, and for spoil removal. Accidents are less likely to occur at sites that are open and kept clear
of debris.
In most instances, an entrance pit will be required at the approach side of the bore. The dimensions
of the pit floor required to install 20 feet (6.1 m) sections of casing, are found in the following illustrations.
These dimensions will provide the most convenient and safest working conditions. They can be reduced
but at the expense of efficiency and production.
It is the responsibility of the owner to make a safe pit that is in accordance with the rules set forth in
the (OSHA) Code of Federal Regulations 29. There are specific requirements for pit construction,
protection, barricades, traffic control, installation and type of ladders used in the pit and personal safety
equipment. Barbco, Inc. recommends that the owner become familiar with the requirements of the
(OSHA) Regulations CFR29. Information can be obtained from your Regional Department of Labor
Office.
The floor of the pit must be aligned with the proposed casing grade. It must also be solid enough to sup-
port the equipment being used without settling. A base of crushed stone should be used to prevent settling.
The use of concrete under the tracks is required and should be allowed for when bringing the floor up to
grade. The use of a concrete base is required on all bores.
The boring operation requires that a square and secure backstop tied into the pit floor be provided for the
track push plate. The thrust for the entire bore is transferred through the track to the backstop. Should the
backstop fail during the bore campaign, valuable time will be lost in rebuilding. The backstop should be
designed to withstand 1-1/2 to 2 times the maximum thrust of the boring machine being used. Barbco,
Inc. strongly recommends using the services of a competent engineer to assist in the pit floor, anchoring
and backstop design.
A SECURE BASE, ANCHORING SYSTEM AND BACKSTOP ARE ESSENTIAL FOR ALL BORES.
The possibility of flooding always exists during the boring operation. The location of a pit sump pump
for dewatering should be considered during the design of the pit.
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Set Up