OSHA Requirements for Ladder Modifications

Occupational Health and Safety Administration (OSHA) regulations regarding ladder modifications are contained in Standard 1926.1053 for ladders. OSHA requires that any modifications maintain the original designed use and strength of the ladder. Modified ladders must also meet the general requirements for all ladders, as well as for the specific type of ladder--portable, wooden, metal, etc.--being modified.

Strength and Design

• A ladder must only be used as originally designed and must retain the same strength after modification or repair. Ladders may not be tied together unless designed to do so and no modification may be made that interferes with its designed use. Spliced side rails must be as strong as a one-piece side rail of the same material. Repairs made to a ladder must maintain its original strength.

Surfaces

• Wooden ladders may not be covered with any non-transparent material, like paint, except for warning and information labels on the side rail. Steps and rungs must remain slip resistant and free from debris and grease.

General

• Modified ladders must meet the same general requirements as all ladders. Steps and rungs must be parallel, uniformly spaced and no more than 10 inches apart. Modified specific-use ladders must meet the same general requirements as unmodified specific-use ladders. These requirements are outlined in OSHA standards. All ladder surfaces must remain smooth to avoid snagging clothing or lacerating workers.