OSHA Compliant Stairs

The following Lapeyre egress and stair systems are in compliance with OSHA Standards.

Because individual municipalities may modify or tighten the requirements of the major codes (IBC, SBCCI, BOCA, etc), it is always recommended that local code officials review the dimensional prints provided by Lapeyre. See Lapeyre’s Building Code Policy Statement for additional information.

Alternating Tread Stair

OSHA has issued a letter stating that the alternating tread stair "is safe for use, meets the intent of the Occupational Safety and Health Act and no citations will be issued if it is properly installed and maintained per your specifications." This letter can be found on OSHA's website: Standards Interpretation and Compliance Letters.

In April 1982, OSHA issued a directive to field compliance officers concerning the use of alternating tread stairs. This directive can also be found on OSHA's website: Instruction STD 1­1.11

OSHA's proposed revision of industry standards for workplace walking and working surfaces (29 CFR part 1910) addresses alternating tread stairs (Section 1910.25, of Federal Register / Vol. 55, No. 69 / April 10, 1990 / Proposed Rules). The proposed rule is still outstanding and was re-opened in May 2003. The status of this rule and the full document may be viewed on their website under Walking and Working Surfaces; Personal Protective Equipment (Fall Protection Systems) ­ 68:23527­23568

Industrial Stair (Stair Model 01AA / 02AA)

Stair Type/Applications:
  • Industrial Equipment Access
  • Industrial Secondary Access
  • Fixed Industrial Stair

This stair may not be applied as part of any fire or emergency egress path. Nor may it be used where an accessible stair is required.


This stair design allows for 15" gap rule, open risers, and open treads. This stair may be used as an auxiliary stair when other pre­existing stairs provide the egress capacity component.

  • Designed to meet section 1910.23(e)(1).
  • Baluster spacing is designed to comply with OSHA requirements and is adjustable within those guidelines
Baluster spacing is designed to comply with OSHA requirements and is adjustable within those guidelines
Design Specs:
  • Safety factor of 5 required on anticipated live loads. – 1910.24(c)
  • 1000 # moving load – 1910.24(c)
  • 200# load any direction on top rail. – 1910.23(e)(3)(iv)
  • Stair design/features based on requirements listed in: 1910.23, 1910.24, 1910.28, and 1910.37