CM 3503 Final Exam and All Actual
Answers 2026 Updated.
Excavation - Answer Any man-made cut, cavity, trench or depression in an earth surface
formed by earth removal
Trench excavation - Answer A narrow underground excavation with a depth greater than the
width but no wider than 15 ft.
Competent Person - Answer One who is capable of identifying existing and predictable
hazards in the surroundings, or working conditions which are unsanitary, hazardous, or
dangerous to employees, and who has authorization to take prompt corrective measures to
eliminate them.
Qualified Person - Answer One who, by possession of a recognized degree, certificate, or
professional training, and experience, has successfully demonstrated his ability to solve or
resolve problems relating to the subject matter, the work, or the project.
Registered Professional Engineer (RPE) - Answer One who is registered as a professional
engineer in the state where the work is to be performed. A professional engineer, registered in
any state is deemed to be a 'registered professional engineer' within the meaning of this
standard when approving designs for 'manufactured protective systems' or tabulated data to be
used in interstate commerce.
Tabulated Data - Answer tables and charts approved by a registered professional engineer
and used to design and construct a protective system. The tabulated data for protective systems
must be made available on the job-site.
Cave-in - Answer - Separation of a mass of soil from the side of an excavation or
- Loss of soil from under a trench shield or support system and its sudden movement into the
excavation
- Could entrap, bury, injure or immobilize a person.
Cubic foot soil weight - Answer 114 lbs./ft3
Cubic yard soil weight - Answer 3078 lbs.
Occupational Safety Health Administration - Answer The organization within the Department
of Labor (DOL) that is authorized to conduct job-site inspection is the _________________
, Subpart P - Answer The OSHA standards for excavation that employers are required to follow
are found in 29 CFR 1926 _________ __.
Excavations - Answer OSHA's 1926 Subpart P applies to all open _______________ made in
the earth's surface.
Trenches - Answer Excavations are defined to include _________.
For competent person - Answer training in soil analysis, protective systems, and OSHA
standards
For excavation workers - Answer training in recognition and avoidance of hazards to avoid
unsafe conditions
Worker safety orientation for excavations includes - Answer - An identification of specific job-
site hazards and safe-guards
- Proper uses of protective systems
- Emergency action plan for the site
Performance Standard - Answer A standard in which the method of compliance is not
specified
Interpretation letters - Answer ______________ _______ explain OSHA requirements and
how they apply to specific circumstances
False, 15 ft - Answer (T/F) According to OSHA, a trench is a narrow excavation that is no
greater than 10 ft. at its base
False, OSHA standards enforce all excavations regardless of depth - Answer (T/F) OSHA does
not enforce any violation on an excavation that is less than 5ft.
True - Answer (T/F) The most likely person to act as a competent person are supervisors and
excavator operators.
False - Answer (T/F) Trenchless technology is covered by OSHA standard
Factors Affecting Soil Strength - Answer - Soil Type
Answers 2026 Updated.
Excavation - Answer Any man-made cut, cavity, trench or depression in an earth surface
formed by earth removal
Trench excavation - Answer A narrow underground excavation with a depth greater than the
width but no wider than 15 ft.
Competent Person - Answer One who is capable of identifying existing and predictable
hazards in the surroundings, or working conditions which are unsanitary, hazardous, or
dangerous to employees, and who has authorization to take prompt corrective measures to
eliminate them.
Qualified Person - Answer One who, by possession of a recognized degree, certificate, or
professional training, and experience, has successfully demonstrated his ability to solve or
resolve problems relating to the subject matter, the work, or the project.
Registered Professional Engineer (RPE) - Answer One who is registered as a professional
engineer in the state where the work is to be performed. A professional engineer, registered in
any state is deemed to be a 'registered professional engineer' within the meaning of this
standard when approving designs for 'manufactured protective systems' or tabulated data to be
used in interstate commerce.
Tabulated Data - Answer tables and charts approved by a registered professional engineer
and used to design and construct a protective system. The tabulated data for protective systems
must be made available on the job-site.
Cave-in - Answer - Separation of a mass of soil from the side of an excavation or
- Loss of soil from under a trench shield or support system and its sudden movement into the
excavation
- Could entrap, bury, injure or immobilize a person.
Cubic foot soil weight - Answer 114 lbs./ft3
Cubic yard soil weight - Answer 3078 lbs.
Occupational Safety Health Administration - Answer The organization within the Department
of Labor (DOL) that is authorized to conduct job-site inspection is the _________________
, Subpart P - Answer The OSHA standards for excavation that employers are required to follow
are found in 29 CFR 1926 _________ __.
Excavations - Answer OSHA's 1926 Subpart P applies to all open _______________ made in
the earth's surface.
Trenches - Answer Excavations are defined to include _________.
For competent person - Answer training in soil analysis, protective systems, and OSHA
standards
For excavation workers - Answer training in recognition and avoidance of hazards to avoid
unsafe conditions
Worker safety orientation for excavations includes - Answer - An identification of specific job-
site hazards and safe-guards
- Proper uses of protective systems
- Emergency action plan for the site
Performance Standard - Answer A standard in which the method of compliance is not
specified
Interpretation letters - Answer ______________ _______ explain OSHA requirements and
how they apply to specific circumstances
False, 15 ft - Answer (T/F) According to OSHA, a trench is a narrow excavation that is no
greater than 10 ft. at its base
False, OSHA standards enforce all excavations regardless of depth - Answer (T/F) OSHA does
not enforce any violation on an excavation that is less than 5ft.
True - Answer (T/F) The most likely person to act as a competent person are supervisors and
excavator operators.
False - Answer (T/F) Trenchless technology is covered by OSHA standard
Factors Affecting Soil Strength - Answer - Soil Type
