Construction (29 CFR 1926)

Assembly/Disassembly – General Requirements

Verified vs OSHA sources · 2026-10-05

29 CFR 1926.1404

29 CFR 1926.1404 governs assembly and disassembly of cranes and derricks in construction. It requires that the work be directed by an "A/D director", a person who is both a competent person and a qualified person (or a competent person assisted by qualified persons), and be carried out following the manufacturer's procedures or procedures developed by a qualified engineer. It targets the crushing, tip-over, and struck-by hazards of rigging cranes up and down.

29 CFR 1926.1404 at a glance

Who directs it: An A/D director: a competent person AND a qualified person
Procedures: Manufacturer procedures, or procedures from a qualified engineer
Key hazards addressed: Boom collapse, tip-over, pinch/crush, and struck-by during rig-up
Crew protection: Keep workers out of danger zones during high-risk steps
Part of: Subpart CC: Cranes and Derricks in Construction (2010)
Max penalty (2026): $16,550 per serious violation; $165,514 per willful

What 29 CFR 1926.1404 requires (plain English)

29 CFR 1926.1404 sets the general requirements for assembling and disassembling cranes and derricks in construction: the rig-up and tear-down of booms, jibs, outriggers, counterweights, and mast sections. It is part of Subpart CC, OSHA's 2010 cranes standard.

The central requirement is supervision by an A/D director: assembly and disassembly must be directed by a person who meets the criteria for both a competent person and a qualified person, or by a competent person who is assisted by one or more qualified persons. The A/D director must understand the applicable procedures, review them with the crew, verify each worker understands their tasks and the hazards, and address the specific dangers: such as boom and jib assembly, outrigger and stabilizer setup, and use of a crane to assist.

The work must follow the manufacturer's procedures, or, where those are unavailable or the employer uses different procedures, procedures developed by a qualified person (a registered professional engineer for certain steps). 1926.1404 and the sections that follow (1926.1405–1926.1407) also address specific hazards like workers being in the fall zone, pinch points, and using the assist crane: all aimed at the crush, tip-over, and struck-by risks that make rig-up so dangerous.

The regulatory text

“Assembly/disassembly must be directed by a person who meets the criteria for both a competent person and a qualified person, or by a competent person who is assisted by one or more qualified persons ("A/D director").”

29 CFR 1926.1404(a)(1)

Key facts about 29 CFR 1926.1404

Assembly/disassembly must be directed by an A/D director (1926.1404(a)(1)).
The A/D director must be both a competent person and a qualified person (or a competent person assisted by qualified persons).
The work must follow manufacturer procedures or qualified-engineer procedures.
The A/D director reviews procedures and hazards with the crew before starting.
Workers must be kept out of danger zones during high-risk steps.
It is part of Subpart CC, OSHA's 2010 cranes and derricks standard.
Rig-up and tear-down are among the deadliest phases of crane work.

Scope: who 29 CFR 1926.1404 applies to

Regulatory framework: Construction (29 CFR 1926)
Citation reference: 29 CFR 1926.1404
Enforcement status: In force and enforced
Jurisdiction: Federal OSHA (29 State-Plan jurisdictions may be stricter)

State-Plan states (e.g. California, Washington, Michigan) operate OSHA-approved programs that must be at least as effective as federal OSHA and frequently impose higher penalties or additional requirements. Confirm the rule as adopted in your state.

Key requirements of 29 CFR 1926.1404

#	Employer obligation
1	Use qualified or competent person to direct A/D
2	Develop A/D procedures
3	Account for wind and weather conditions
4	Ensure adequate ground conditions
5	Train assembly/disassembly crew

Summarized from the text of 29 CFR 1926.1404. Always read the full regulation for the binding language.

Common Crane Assembly/Disassembly violations

Deficiencies OSHA cites under 29 CFR 1926.1404 include the ones below, in no particular order. Distinct deficiencies can be cited as separate items, and each serious item carries up to $16,550 (2026). Broader per-instance stacking exists but is a discretionary, case-by-case OSHA enforcement policy, not an automatic multiplier.

Assembly or disassembly not directed by a qualified A/D director (1926.1404(a)).
Not following manufacturer or qualified-engineer procedures (1926.1404(b)).
Workers exposed to the danger zone during rig-up steps (1926.1404).
A/D director not reviewing procedures and hazards with the crew (1926.1404(c)).
Improvised assembly methods without engineered procedures (1926.1404(b)).

The A/D director must be BOTH competent and qualified: an experienced operator alone is not enough

A frequent shortcut is letting the crane operator or a senior crew member run the assembly because they've "done it many times." 1926.1404 sets a higher bar: the A/D director must meet the criteria for both a COMPETENT person (able to identify hazards and authorized to correct them) AND a QUALIFIED person (with the knowledge, training, or professional standing to address the technical requirements), or be a competent person actively assisted by qualified persons. Experience alone does not make someone qualified. And the work must follow the manufacturer's or a qualified engineer's procedures, not improvised methods. Running assembly without a proper A/D director is one of the most-cited crane violations because it is exactly where the fatal mistakes happen.

What OSHA inspectors look for

A compliance officer checks that an A/D director with the required competent-and-qualified credentials directed the assembly or disassembly, that manufacturer (or qualified-engineer) procedures were used, and that crew members were kept out of danger zones during pinning, boom raising, and other high-risk steps. Assembly by an unqualified crew is the classic finding.

Example: how a violation is cited

A crew disassembles a crane boom without an A/D director and steps under a supported section as pins are removed; the section shifts and crushes a worker. OSHA cites 1926.1404 for assembly/disassembly not directed by a qualified A/D director and for exposing workers to the danger zone, with penalties from $16,550.

Illustrative example, not a specific OSHA case.

Crane Assembly/Disassembly compliance checklist

Use this to evaluate your compliance with 29 CFR 1926.1404. Each item is a key requirement OSHA may verify during an inspection.

Designate an A/D director who is both a competent person and a qualified person.
Use manufacturer procedures, or qualified-engineer procedures where those are unavailable.
Have the A/D director review the procedures and hazards with the crew before starting.
Keep workers out of danger zones during boom, jib, outrigger, and counterweight steps.
Address the specific hazards (fall zone, pinch points, assist crane) called out in Subpart CC.
Verify each crew member understands their tasks and the hazards before proceeding.

2026 penalties for 29 CFR 1926.1404

Maximums set by 29 CFR 1903.15(d). 2026 amounts unchanged from 2025 (no CPI adjustment; OMB M-26-11). Not an increase. The 2025 OSHA penalty levels remain in effect for 2026; OSHA made no inflation adjustment for 2026. 29 CFR 1903.15 identifies January 15, 2025 as the effective reference for these amounts, while OSHA's public penalties page currently references penalties assessed after Jan. 15, 2026.

Violation type	Minimum	Maximum	When it applies
Serious	$1,085	$16,550	Substantial probability of death or serious physical harm.
Other-Than-Serious	$0	$16,550	Relates to safety/health but unlikely to cause death or serious harm.
Willful	$11,823	$165,514	Intentional, knowing, or voluntary disregard of the requirement.
Repeated	$4,256	$165,514	A substantially similar violation cited within the last 5 years.
Failure to Abate	None	$16,550/day	up to $16,550 per day; total capped at 30x the daily amount (FOM Ch.6)

Assembly/disassembly citations often follow crane incidents and are frequently serious or willful given the crush and tip-over risk. Serious violations reach $16,550 and willful or repeat violations $165,514.

Maximums and the willful minimum are set by 29 CFR 1903.15(d); the serious and repeated minimums are OSHA policy floors from its annual penalty adjustment memo. OSHA applies gravity-based and size, good-faith and history reductions (FOM CPL 02-00-164 Ch.6). Estimates only, not legal advice.

The business case for Crane Assembly/Disassembly compliance

Crane assembly and disassembly is one of the deadliest phases of crane work: booms under tension, heavy sections held by pins, and outrigger and counterweight operations can crush or strike workers in an instant if a step is done wrong or someone stands in the wrong place. 1926.1404 puts a qualified A/D director in charge and ties the work to engineered procedures, which is what prevents the boom-collapse and pinch-point fatalities that recur in this phase.

Free compliance tools for 29 CFR 1926.1404

Crane Lift Plan Calculator Job Hazard Analysis Builder Pre-Task Plan Generator

Crane Assembly/Disassembly penalties by state

Penalties and enforcement vary by state. State-Plan states may impose higher penalties and additional requirements beyond federal 29 CFR 1926.1404.

Alabama Arkansas Colorado Connecticut Delaware District of Columbia

View all 50 states + DC →

Frequently asked questions about 29 CFR 1926.1404

Who must direct crane assembly and disassembly?

Under 1926.1404, assembly and disassembly must be directed by an "A/D director": a person who meets the criteria for both a competent person and a qualified person, or a competent person who is assisted by one or more qualified persons. The A/D director oversees the work, reviews the procedures and hazards with the crew, and ensures the manufacturer's or a qualified engineer's procedures are followed.

What is an A/D director?

A/D director stands for Assembly/Disassembly director: the person 1926.1404 requires to direct crane rig-up and tear-down. They must be both a competent person (able to identify and correct hazards) and a qualified person (with the technical knowledge or credentials for the task), or a competent person assisted by qualified persons. Their job is to run the operation safely and keep the crew out of danger zones.

What procedures must crane assembly follow?

Under 1926.1404, assembly and disassembly must follow the manufacturer's procedures. Where the manufacturer's procedures are unavailable, or the employer uses different procedures, those procedures must be developed by a qualified person, and for certain steps, a registered professional engineer. Improvised or ad-hoc assembly methods are not permitted.

Why is crane assembly so dangerous?

Because booms and sections are heavy, held under tension or by pins, and can shift, collapse, or tip during rig-up and tear-down: crushing or striking anyone in the wrong place. Assembly and disassembly is a phase where crane fatalities cluster, which is why 1926.1404 requires a qualified A/D director, engineered procedures, and keeping workers out of the danger zones during the risky steps.

Regulatory history of 29 CFR 1926.1404

The assembly/disassembly requirements, including the A/D director role in 1926.1404, took effect with OSHA's comprehensive Cranes and Derricks in Construction standard (Subpart CC) on November 8, 2010 (75 FR 47906). The standard replaced the decades-old 1926.550 and added detailed provisions for the phases, like rig-up and tear-down, where crane fatalities cluster.

Related glossary terms

Key terms that appear in 29 CFR 1926.1404, each with a full plain-English explainer.

Competent Person Qualified Person Struck-By Caught-In/Between

Related guides & articles

Crane & Rigging Safety: OSHA Construction Guide Fall Protection in Construction: OSHA Guide 2026

Related OSHA standards

29 CFR 1926.251

Rigging Equipment

29 CFR 1926.1436

Derricks

29 CFR 1926.1400

Crane Rule Scope

29 CFR 1926.1408

Crane Power Line Safety

Primary sources

OSHA figures on this page are imported from HazComFast's verified regulatory module (verified 2026-10-05 against eCFR, OSHA.gov, and the Federal Register).

This page is an educational summary, not legal advice. OSHA standards and penalty amounts change; confirm requirements against the current regulation and your applicable State-Plan before acting.

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