Construction (29 CFR 1926)

General Requirements for Storage (Construction)

Verified vs OSHA sources · 2026-10-05

29 CFR 1926.250

29 CFR 1926.250 sets the general requirements for storing, handling, and disposing of materials on construction sites: materials stored in tiers must be stacked, racked, blocked, interlocked, or otherwise secured to prevent sliding, falling, or collapse, aisles and passageways must be kept clear, and floor load limits must be observed and posted.

29 CFR 1926.250 at a glance

What it requires: Construction materials secured against collapse, clear aisles, and observed floor load limits
Who it covers: Construction employers storing and handling materials
Stacking rule: Materials stored in tiers must be secured to prevent sliding, falling, or collapse (1926.250(a)(1))
Key duty: Stack and secure materials, keep aisles clear, and respect posted floor load limits
Max penalty (2026): $16,550 per serious violation; $165,514 per willful
The #1 confusion: A stack must be blocked or interlocked to be stable: height alone makes it dangerous

What 29 CFR 1926.250 requires (plain English)

29 CFR 1926.250 sets the general requirements for the storage, handling, and disposal of materials on construction sites. Because construction materials are heavy and stacked high, the standard focuses on keeping stored material stable, keeping travel paths clear, and not overloading the structure.

Materials stored in tiers must be stacked, racked, blocked, interlocked, or otherwise secured to prevent sliding, falling, or collapse. Aisles and passageways must be kept clear and in good repair to provide safe travel and material handling. The weight of stored materials on floors and structures must not exceed the maximum safe load limits, which must be posted, and materials must be stored a safe distance from edges, excavations, and openings. Specific rules cover bagged materials, brick, block, and lumber.

1926.250 parallels general industry's materials-handling standard (1910.176) and works with the general safety-and-health provisions (1926.20) and the crane and rigging standards for moving stored material. It addresses the struck-by and structural-overload hazards of the material that a construction site constantly stockpiles and moves.

The regulatory text

“All materials stored in tiers shall be stacked, racked, blocked, interlocked, or otherwise secured to prevent sliding, falling or collapse.”

29 CFR 1926.250(a)(1)

Key facts about 29 CFR 1926.250

Materials stored in tiers must be secured to prevent sliding, falling, or collapse (1926.250(a)(1)).
Aisles and passageways must be kept clear and in good repair.
Floor and structure load limits must not be exceeded and must be posted (1926.250(a)(2)).
Materials must be stored a safe distance from edges, excavations, and openings.
Specific rules cover bagged materials, brick, block, and lumber stacking.
Struck-by from collapse and structural overload are the primary hazards.
It parallels general industry's materials-handling standard (1910.176).

Scope: who 29 CFR 1926.250 applies to

Regulatory framework: Construction (29 CFR 1926)
Citation reference: 29 CFR 1926.250
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 1926.250

#	Employer obligation
1	Stack materials to prevent sliding, falling, or collapse
2	Keep storage areas free from accumulation of materials that create hazards
3	Store materials clear of hoistway
4	Post maximum load limits for temporary storage areas
5	Remove protruding nails from lumber

Summarized from the text of 29 CFR 1926.250. Always read the full regulation for the binding language.

Common Materials Storage (Construction) violations

Deficiencies OSHA cites under 29 CFR 1926.250 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.

Materials stored in tiers not secured against sliding, falling, or collapse (1926.250(a)(1)).
Aisles and passageways blocked or not kept clear (1926.250(a)(3)).
Floor or structure loaded beyond safe limits, or limits not posted (1926.250(a)(2)).
Materials stored too close to edges, excavations, or openings (1926.250(b)).
Improper stacking of brick, block, lumber, or bagged materials (1926.250(b)).

A stack must be blocked or interlocked: stacking it high is not the same as stacking it safely

Crews often stack materials high to save space without securing them, but 1926.250(a)(1) requires materials stored in tiers to be stacked, racked, blocked, interlocked, or otherwise secured to prevent sliding, falling, or collapse. A tall stack of block, brick, pipe, or bagged material that is not interlocked or blocked can slide or topple from vibration, a bump, or its own weight, striking a worker passing by. A second overlooked point is floor loading: piling heavy material where the floor cannot carry it can overload and collapse the structure. Securing the stack and respecting posted load limits are what make storage safe.

What OSHA inspectors look for

A compliance officer looks for unstable or unsecured material stacks, materials stored too close to edges or in aisles, blocked passageways, and floors loaded beyond their posted limits. Leaning stacks and materials that could slide or collapse are the classic findings.

Example: how a violation is cited

A stack of masonry block stored in tiers without blocking or interlocking topples onto a worker passing in the aisle. OSHA cites 1926.250(a)(1) because materials stored in tiers must be secured to prevent sliding, falling, or collapse, with penalties from $16,550.

Illustrative example, not a specific OSHA case.

Materials Storage (Construction) compliance checklist

Use this to evaluate your compliance with 29 CFR 1926.250. Each item is a key requirement OSHA may verify during an inspection.

Stack, rack, block, or interlock materials stored in tiers so they cannot slide, fall, or collapse.
Keep aisles and passageways clear and in good repair for safe travel and handling.
Observe and post the maximum safe floor and structure load limits.
Store materials a safe distance from edges, excavations, and floor openings.
Follow the specific stacking rules for brick, block, lumber, and bagged materials.
Coordinate with the crane and rigging standards when moving stored materials.

2026 penalties for 29 CFR 1926.250

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)

Materials-storage citations arise on active construction sites. Serious violations reach $16,550 and willful or repeat violations $165,514; unstable stacks and blocked aisles are the usual findings.

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 Materials Storage (Construction) compliance

Stored materials are heavy, and an unstable stack that slides or collapses strikes and crushes workers passing by. Securing stacks, keeping aisles clear, and respecting floor load limits prevent both the struck-by injuries of a collapse and the structural overload of piling material where the floor cannot carry it.

Free compliance tools for 29 CFR 1926.250

Weekly Site Safety Inspection Inspection Action Plan Job Hazard Analysis Builder

Materials Storage (Construction) penalties by state

Penalties and enforcement vary by state. State-Plan states may impose higher penalties and additional requirements beyond federal 29 CFR 1926.250.

Alabama Arkansas Colorado Connecticut Delaware District of Columbia

View all 50 states + DC →

Frequently asked questions about 29 CFR 1926.250

How must construction materials be stored?

Under 1926.250(a)(1), all materials stored in tiers must be stacked, racked, blocked, interlocked, or otherwise secured to prevent sliding, falling, or collapse. In addition, aisles and passageways must be kept clear, floor load limits must be observed and posted, and materials must be kept a safe distance from edges, excavations, and openings.

Do floor load limits have to be posted on a construction site?

Yes, where materials are stored on a structure. Under 1926.250(a)(2), the weight of stored materials must not exceed the maximum safe load of the floor or structure, and the maximum safe load limits must be posted in the storage areas. Overloading a floor with stacked material can overload and collapse the structure.

Why do material stacks have to be blocked or interlocked?

Because a tall stack that is merely piled up can slide or topple from vibration, a bump, or its own weight, striking a worker passing by. 1926.250(a)(1) requires materials in tiers to be blocked, interlocked, racked, or otherwise secured so the stack stays stable. Struck-by from a collapsing stack is a preventable but serious hazard on busy sites.

How does 1926.250 relate to general industry's 1910.176?

They are the materials-handling and storage standards for their industries: 1926.250 for construction and 1910.176 for general industry. Both require materials stacked and secured to prevent collapse, clear aisles, and respect for load limits. The construction version adds detail suited to jobsite stockpiling of brick, block, and lumber, but the secure-stacking principle is the same.

Regulatory history of 29 CFR 1926.250

1926.250 has anchored Part 1926 Subpart H (materials handling, storage, use, and disposal) since OSHA's early construction standards. Its secure-stacking and load-limit requirements parallel general industry's 1910.176 and address the struck-by and structural-overload hazards inherent in the way construction sites stockpile heavy materials.

Related glossary terms

Key terms that appear in 29 CFR 1926.250, each with a full plain-English explainer.

Competent Person Personal Protective Equipment (PPE)Hierarchy of Controls National Emphasis Program (NEP)

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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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