FS Industries ENGINEERED STEEL PRODUCTS
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PO Box 72659 Providence, RI 02907
Toll free:(800) 421-0314 • In RI:(401) 421-0314 • Fax:(401) 421-5679
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STAIRS WITH HORIZONTAL PLATFORM
EXTENSIONS
Reach, cross, or access any area with Stor Deck custom fit stair
designs. Sketched below are just a few of the possible configurations
which can be created to provide the path necessary to solve your
personnel access or production requirements. Now you can use
any of our standard stair designs in combination with our horizontal
stair extensions to form the walkway most suited to your building or
manufacturing process. The sketches below are just a few examples
of the limitless possible configurations.
• Quality engineered to your specific height requirements
• Designed for safety and convenience
• Heavy duty bar grating or diamond plate stair treads
   won’t sag or dish (standard).
• Factory welded handrails of 1 1/2" x 14 Ga. square
   tubing.
• 2 rail system with toeguard (standard).
• 10" structural channel stringers.
• Structural connections are made with 5/8" dia. Bolts
   and 3/8" butt plates.
• Fire proof construction.
• Meets OSHA requirements. See OSHA standard
   1910.24 (Fixed Industrial Stairs) listed below price
   table.
• Standard finish gray enamel, others available upon
   request.
• Provides safe walkways over conveyors, pipes and
   other obstacles.
• Choose 36" or 48" tread width - special sizes
   available upon request.
• Overall width = tread width + 4".

NEW! Optional Finishes!

Our standard finish is a quick dry enamel in a variety of colors.
Now we are pleased to offer our products with a hot-dipped galvanized finish or in a
duplex system which is paint over a hot-dipped galvanized undercoat.


OSHA
Nominal 45 degree stair angle
BOCA
Nominal 7/11-rise/run 32 degree
stair angle
Ships Ladder
Nominal 68 degree
ladder angle
Open Riser Diamond Plate Stair Treads
1/8" Thick x 9" or 11" Deep
Steel Stair Treads
8 9/16" and 10 15/16" Tread Depth
9" OSHA
Bar grating stair treads are safe, self-cleaning, skid-
resistant and economical.
Welded steel stair treads are the most widely
used for their strength and ease of installation and
are universally used in most industrial and commercial
applications.
11" BOCA
CHOOSE FROM MANY DIFFERENT COMBINATIONS
(SEE BELOW FOR SOME EXAMPLES)
OSHA DESIGN
BOCA DESIGN
SHIPS LADDER DESIGN
3 RAILS
OSHA - WALKWAY -
OSHA
BOCA 2 RAILS - WALKWAY -
SHIPS LADDER
OSHA - WALKWAY -
SHIPS LADDER
OSHA - WALKWAY -
SHIPS LADDER
SHIPS LADDER - WALKWAY -
BOCA 3 RAILS
SHIPS LADDER - WALKWAY -
SHIPS LADDER
CUSTOM SIZES - SAME DAY QUOTES
Custom sizes and configurations are readily available. We provide same day price quotes if you require a special
stair angle, specific tread rise/run, or a maximum horizontal stair run to satisfy available floor space constraints.

FACTORY LOAD TEST
In addition to theoretical
design analysis
FS Industries has
performed actual load
tests with a 25%
overload to insure
design conformance to
OSHA standard 1910.24
which is printed below
test photos.
1250 lbs. concentrated load applied
to the center span of stair tread on a
3" long x 1 1/2" flat bar bearing surface.
Underside view of 1250 lbs.
Concentrated load suspended
from center of stair tread.
1250 lbs. load on the center of
the crossover span.
1250 lbs. Load applied to the center
of the horizontal crossover section.
1250 lbs. Load applied to the bolted
structural connection point of the stair
and the horizontal crossover section.
OSHA STANDARD 1910.24 FIXED INDUSTRIAL STAIRS
1910.24(a)

"Application of requirements." This section contains specifications for the safe design and construction of fixed general
industrial stairs. This classification includes interior and exterior stairs around machinery, tanks, and other equipment,
and stairs leading to or from floors, platforms, or pits. This section does not apply to stairs used for fire exit purposes,
to construction operations to private residences, or to articulated stairs, such as may be installed on floating roof tanks
or on dock facilities, the angle of which changes with the rise and fall of the base support.

..1910.24(b)

1910.24(b)

"Where fixed stairs are required." Fixed stairs shall be provided for access from one structure level to another where
operations necessitate regular travel between levels, and for access to operating platforms at any equipment which
requires attention routinely during operations. Fixed stairs shall also be provided where access to elevations is daily or
at each shift for such purposes as gauging, inspection, regular maintenance, etc., where such work may expose
employees to acids, caustics, gases, or other harmful substances, or for which purposes the carrying of tools or
equipment by hand is normally required. (It is not the intent of this section to preclude the use of fixed ladders for
access to elevated tanks, towers, and similar structures, overhead traveling cranes, etc., where the use of fixed ladders
is common practice.) Spiral stairways shall not be permitted except for special limited usage and secondary access
situations where it is not practical to provide a conventional stairway. Winding stairways may be installed on tanks and
similar round structures where the diameter of the structure is not less than five (5) feet.

1910.24(c)

"Stair strength." Fixed stairways shall be designed and constructed to carry a load of five times the normal live load
anticipated but never of less strength than to carry safely a moving concentrated load of 1,000 pounds.

1910.24(d)

"Stair width." Fixed stairways shall have a minimum width of 22 inches.

1910.24(e)

"Angle of stairway rise." Fixed stairs shall be installed at angles to the horizontal of between 30 deg. and 50 deg. Any
uniform combination of rise/tread dimensions may be used that will result in a stairway at an angle to the horizontal
within the permissible range. Table D-1 gives rise/tread dimensions which will produce a stairway within the permissible
range, stating the angle to the horizontal produced by each combination. However, the rise/tread combinations are not
limited to those given in Table D-1.

Table D-1
________________________________________________________
Angle to horizontal | Rise (in inches) | Tread run (in inches)    
__________________________   |____________________________
30 deg. 35'............|    6 1/2             |            11
32 deg. 08'............|    6 3/4             |            10 3/4
33 deg. 41'............|    7                   |            10 1/2
35 deg. 16'............|    7 1/4             |            10 1/4
36 deg. 52'............|    7 1/2             |            10
38 deg. 29'............|    7 3/4             |            9 3/4
40 deg. 08'............|    8                   |            9 1/2
41 deg. 44'............|    8 1/4             |            9 1/4
43 deg. 22'............|    8 1/2             |            9
45 deg. 00'............|    8 3/4             |            8 3/4
46 deg. 38'............|    9                   |            8 1/2
48 deg. 16'............|    9 1/4             |            8 1/4
49 deg. 54'............|    9 1/2             |            8
_______________________________________________________


..1910.24(f)

1910.24(f)

"Stair treads." All treads shall be reasonably slip-resistant and the nosings shall be of nonslip finish. Welded bar grating
treads without nosings are acceptable providing the leading edge can be readily identified by personnel descending the
stairway and provided the tread is serrated or is of definite nonslip design. Rise height and tread width shall be uniform
throughout any flight of stairs including any foundation structure used as one or more treads of the stairs.

1910.24(g)

"Stairway platforms." Stairway platforms shall be no less than the width of a stairway and a minimum of 30 inches in
length measured in the direction of travel.

1910.24(h)

"Railings and handrails." Standard railings shall be provided on the open sides of all exposed stairways and stair
platforms. Handrails shall be provided on at least one side of closed stairways preferably on the right side descending.
Stair railings and handrails shall be installed in accordance with the provisions of 1910.23.

1910.24(i)

"Vertical clearance." Vertical clearance above any stair tread to an overhead obstruction shall be at least 7 feet
measured from the leading edge of the tread.


[39 FR 23502, June 27, 1974, as amended at 43 FR 49744, Oct. 24, 1978; 49 FR 5321, Feb. 10, 1984]

--------------------------------------------------------------------------------

Next Standard (1910.25)


Regulations (Standards - 29 CFR) - Table of Contents

Galvanized Stairs, Industrial Stairs, Metal Stairs, Open Tread Stair, OSHA Prefab Stairways, Outdoor Steel Stairs, Prefab Metal Stairs,
Prefab Steel Stairs, Prefabricated Stair, Stair Manufacturers, Steel Pan Stairs, and Steel Stairs from your complete source for material
handling equipment.
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