BOCA 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 “BOCA, for an Industrial Access Stair”, 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 (IBC, SBCCI,
BOCA, etc). Often times, local code jurisdictions will tighten requirements above
and beyond the IBC listed requirements. 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
The 1999 National Building Code permits alternating tread stairs with a minimum
projected tread of 5 inches and a minimum tread depth of 8.5 inches as a means of
egress from mezzanines, roofs and various areas in penal facilities; exception as
a means of egress from a mezzanine area not more than 250 sq. ft. not serving more
than 5 occupants, shall have a minimum projected tread of 8.5 inches, minimum tread
depth of 10.5 inches. (Section 1014.6.6 and 1027.0)
Industrial Stair (Uses Stair Model 01AA / 02AA)
Stair Type/Applications:
-Industrial Equipment Access
-Industrial Secondary Access
-Fixed Industrial Stair
Limitations:
-This Stair can be used only in F1 and F2 (Factory) or S (Storage) Occupancies.
-This stair may not be used where an accessible stair is required.
Allowances:
-This Stair Allows for 21" sphere rule
-Open treads, open risers.
-The guard rail is allowed to also be used as a handrail. Therefore, the handrail
does not need to be a separate rail from the guard rail
-1014.3 Ex 4 that allows a 36" wide stair if the whole building has < 50 occupants
Rails:
-Guards and Handrails may be combined into one rail, with the height set at 42”.
(1022.2.2 Ex)
-The baluster spacing is designed to comply with BOCA’s 21” sphere rule, and is
adjustable within those guidelines.
-Handrail not required if less than three risers. (1014.7 Ex 1)
-Guards should not have an ornamental pattern that would provide a ladder effect
(1021.3).
Design Specs:
-Design Live Load 100#/SF (1014.9.1)
-Design Concentrated Load 300#/SF (1014.9.1)
-Stair design/features based on requirements listed in sections 1014, 1021, and
1022.