OSHA Compliant Stairs
Great news! You don’t need to know all of the in’s and the out’s of the building
code requirements for stairs. We do that for you. Our computerized system designs
the stair for you based on the building code you tell us you need to meet. Just
tell us you need to meet “OSHA”, and the stair our system creates for you will meet
that code. However, we can not possibly keep up with each individual municipality’s
modifications to the major codes. Often times, local code jurisdictions will tighten
requirements above and beyond the requirements of the major codes. Therefore, it
is still suggested to have your local code official review the dimensional print
we will send you. See our BUILDING CODE POLICY STATEMENT
Alternating Tread Stair
OSHA has issued a letter stating that alternating tread stairs are safe, meet the
intent of the OSHA Act, and no citations will be issued. This letter can be found
on OSHA's website of "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 1-1.11
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. You may view the status
of this rule and the full document on their website underWalking and Working Surfaces; Personal Protective Equipment (Fall
Protection Systems) - 68:23527-23568
Industrial Stair (Stair Model 01AA / 02AA)
Stair Type/Applications:
Industrial Equipment Access
Industrial Secondary Access
Fixed Industrial Stair
Limitations:
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.
Allowances:
This stair design allows for 15” gap rule, open risers, and open treads. This stair
may be used as an auxiliary stair when other pre-existing stairs provide the egress
capacity component.
Rails:
Designed to meet section 1910.23(e)(1).
Baluster spacing designed to comply with OSHA requirements and is adjustable within
those guidelines
See attached
letter to/from OSHA regarding the replacement of the mid-railing with additional
balusters on our railing.
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