1.7 OSHA 29 CFR 1926 Job-Site Safety: Sanitation, Signage, Ladders, Scaffolds & Fall Protection

1.7 OSHA 29 CFR 1926 Job-Site Safety: Sanitation, Signage, Ladders, Scaffolds & Fall Protection

Section 1.3 covered the electrical half of job-site safety — energized work, lockout/tagout, GFCI versus an assured equipment grounding conductor program, and insulating rubber goods. The PSI Safety subject area is broader than that. Its eighteen listed sub-topics are ordinary construction-safety topics: job site sanitation, responsibility for providing PPE, excavation safety, emergency action plans, safety training, ventilation, first aid kit requirements, use of PPE, signs/signals/barricades, tools and equipment, ladders, workplace illumination, scaffolds, work around toxic materials, material cleanup and disposal, safety data sheets, handling and storing materials, and fall protection.

This is also the one subject area where the reference book does most of the work for you: 29 CFR Part 1926 is on the permitted reference list, so tab it before test day.

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1. Sanitation, First Aid, and Emergency Planning

[!IMPORTANT] PPE is the employer’s cost. 29 CFR 1926.95(d) requires the employer to provide required PPE at no cost to the employee, with narrow exceptions such as non-specialty safety-toe footwear and non-specialty prescription safety eyewear that the employee is allowed to take off-site. "Buy your own hard hat" is not a lawful job-site policy.

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2. Signs, Signals, Barricades, and Illumination

Subpart G (1926.200–.203) standardizes the color language of a job site:

• Danger signs — red, black, and white. Used only where an immediate hazard exists.
• Caution signs — yellow with a black panel. Warn against potential hazards or unsafe practices.
• Warning signs — orange. Hazards between "caution" and "danger."
• Safety instruction signs — white with a green panel. General safety information.
• Directional and exit signs must be visible at all times where an exit is required.
• Flaggers must use STOP/SLOW paddles, red flags, or approved lights and must wear high-visibility warning garments; at night the garment must be retroreflective.
• Barricades for protection of workers must conform to the Manual on Uniform Traffic Control Devices where public traffic is involved.

Illumination is set by 1926.56 Table D-3, and the exam favors the two extremes:

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3. Tools, Ladders, and Scaffolds

Hand and power tools (1926.300–.305). All hand and power tools, whether furnished by the employer or the employee, must be maintained in safe condition. Guards on point-of-operation and rotating parts may never be removed while the tool is in use. Electric power tools must be grounded through a three-conductor cord or be listed double insulated; pneumatic tool hose connections above 40 psi require a safety device at the source of supply to prevent whipping.

Ladders (1926.1053). The most-tested ladder numbers are:

• Side rails of a ladder used for access to an upper landing must extend at least 3 feet (0.9 m) above the landing surface, unless a grab rail is provided.
• Non-self-supporting portable ladders are set at a pitch of about 4 to 1 — the base is one foot out for every four feet of working length.
• Ladders may not be tied together to create longer sections unless designed for it, and rungs must be kept free of oil, grease, and wet paint.
• Portable metal or conductive ladders may not be used where the employee or the ladder could contact energized conductors.
• Employees must be trained by a competent person (1926.1060) on ladder hazards, maximum intended load, and proper erection.

Scaffolds (1926.451). Every scaffold and its components must support its own weight plus at least 4 times the maximum intended load. Platforms must be fully planked, and each platform must be at least 18 inches wide except in specific narrow-work situations. Guardrail systems are required on scaffold platforms more than 10 feet above a lower level, with the top rail between 38 and 45 inches for scaffolds erected under the current rule. A competent person must supervise erection, moving, dismantling, and altering, and must inspect the scaffold before each work shift. Training is required by 1926.454.

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4. Materials, Toxic Substances, and Housekeeping

Handling and storing materials (1926.250). Maximum safe load limits must be posted in storage areas of buildings under construction, and aisles and passageways must be kept clear. The stacking limits are exam favorites:

• Brick may not be stacked more than 7 feet high; a loose brick stack must be tapered back 2 inches in every foot above the 4-foot level.
• Masonry blocks stacked higher than 6 feet must be tapered back one-half block per tier above the 6-foot level.
• Lumber piles may not exceed 20 feet when handled by a forklift, or 16 feet when handled manually, and must be stacked on level, solidly supported sills with nails withdrawn.

Housekeeping and disposal (1926.25). Form and scrap lumber with protruding nails must be kept clear of work areas, passageways, and stairs; combustible scrap and debris must be removed at regular intervals; and containers must be provided for collection of oily or flammable waste.

Toxic materials. 1926.55 controls exposure to gases, vapors, fumes, dusts, and mists, requiring administrative or engineering controls first and PPE only where those are not feasible. Specific expanded standards apply to lead (1926.62), asbestos (1926.1101), and respirable crystalline silica (1926.1153) — the last of which reaches electricians directly whenever concrete is cored, chased, or sawed.

Hazard communication and SDS. 1926.59 adopts 29 CFR 1910.1200 for construction. The employer must maintain a written hazard communication program, keep a chemical inventory, ensure containers are labeled, make safety data sheets readily accessible on the job site, and train employees. SDSs follow a standardized 16-section format; Sections 1–8 (identification, hazards, composition, first aid, firefighting, accidental release, handling and storage, exposure controls) carry the information a crew needs during an incident.

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5. Excavation and Fall Protection

Excavations (Subpart P, 1926.650–.652).

• A protective system — sloping, benching, shoring, or shielding — is required for excavations 5 feet or deeper unless the excavation is made entirely in stable rock.
• Excavations deeper than 20 feet require a protective system designed by a registered professional engineer.
• Spoil piles and equipment must be kept at least 2 feet back from the edge.
• In trenches 4 feet or deeper, a stairway, ladder, or ramp must be within 25 feet of lateral travel.
• A competent person must inspect the excavation daily, before each shift, and after every rainstorm.
• Maximum allowable slopes for a simple sloped excavation less than 20 feet deep: Type A soil ¾:1 (53°), Type B soil 1:1 (45°), Type C soil 1½:1 (34°).

Fall protection (Subpart M, 1926.501 and .502).

• Construction fall protection is triggered at 6 feet above a lower level — guardrails, safety nets, or a personal fall arrest system.
• Guardrails: top rail 42 inches ±3 inches, midrail at about 21 inches, and a 3½-inch toeboard where objects could fall on people below. The top rail must withstand a 200-pound force.
• Personal fall arrest systems: must limit arresting force to 1,800 pounds when used with a body harness, limit free fall to 6 feet or less, bring the worker to a complete stop within a 3.5-foot deceleration distance, and be anchored to a point capable of supporting 5,000 pounds per attached employee (or designed with a safety factor of at least two under a qualified person’s supervision).
• Body belts are prohibited as part of a personal fall arrest system.
• Holes, including skylights, must be guarded by covers, guardrails, or personal fall arrest systems; covers must support at least twice the weight of employees, equipment, and materials that may cross them and must be marked "HOLE" or "COVER."