FS Industries ENGINEERED STEEL PRODUCTS
Priced Full Line Products Catalog
PO Box 72659 Providence, RI 02907
Toll free:(800) 421-0314 • In RI:(401) 421-0314 • Fax:(401) 421-5679
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OSHA PREFAB STAIRWAYS

Acceptable Usage: For industrial/commercial maintenance
access and industrial/commercial storage access.
This is a steep incline stair not acceptable for public access,
office use, or residential applications.
prefab stairs
STEEP INCLINE STRUCTURAL STEEL STAIRWAYS
Quality engineered to your specific height requirements
   at a nominal 45 degree angle of rise.
Designed for safety and convenience.
Extra heavy duty bar grating stair treads won’t sag or dish
   (supplied as standard).
Factory welded handrails of 1 1/2" x 14 Ga. square tubing.
10" structural channel stringers.
Fire proof construction.
Meets OSHA requirements. See OSHA standard 1910.24
   (Fixed Industrial Stairs) listed below price table.
Standard finish gray enamel (Chart I), galvanized
    (Chart II), or duplex galvanized and painted (Chart III).
Standard 36" wide treads, 40" overall stair width. Other
    widths available upon request.
Tread depths are 9" for diamond plate, and 8 9/16" for
    bar grating treads.
Special colors available upon request
Shipped as 2 welded side frames and 1 bundle of treads for bolted
assembly.
prefabe stairway
45 Degree angle of rise
galvanized stairways osha stairs steep incline stairs
*Important Note When Ordering:
Specify actual floor to floor height
when ordering. Stairways are custom
designed to meet your height
requirements. *Other sizes available
upon request.
Order all galvanized
frame
and tread finish
for maximum durability
and corrosion resistance.
OSHA stair shown with optional
horizontal extension
.
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.

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.

CHART I
PRICING FOR OSHA STAIRS WITH STANDARD PAINTED ENAMEL FRAME
This is a steep incline stair not acceptable for public
access, office use, or residential applications.
Back to Top
Steel Stair Treads
stair treads
dimond plate stair tread
Bar grating stair treads are safe, self-
cleaning, skid-resistant and economical.
Painted Gray

Order Online, by Phone, or by E-Mail

~ Add items to your online shopping cart ~
Click a Price of the item you wish to purchase.

FRAME FINISH-GRAY OR BLUE
TREAD SELECTION
OSHA
TYP.
MODEL
NO.
PRICING
HEIGHT
RANGE
(Floor to Floor)
HORIZONTAL
RUN
TREAD
WIDTH
OVERALL
WIDTH
(A)
BLK BAR
GRATING
8 9/16" TREAD
OPEN RISER
(B)
GAL. BAR
GRATING
8 9/16" TREAD
OPEN RISER
(C)
DIA. PLATE
9" TREAD
PAINTED GRAY
OPEN RISER
S3038-P 36"-41" 26 9/16"-33 5/8" 30 33
S3638-P 36"-41" 26 9/16"-33 5/8" 36 39
S4838-P 36"-41" 26 9/16"-33 5/8" 48 51
         
S3044-P 42"-47" 33 3/4"-40 5/16"  30 33
S3644-P 42"-47" 33 3/4"-40 5/16"  36 39
S4844-P 42"-47" 33 3/4"-40 5/16"  48 51
         
S3050-P 48"-53" 40 9/16"-44 5/16"  30 33
S3650-P 48"-53" 40 9/16"-44 5/16"  36 39
S4850-P 48"-53" 40 9/16"-44 5/16"  48 51
         
S3056-P 54"-59" 44 9/16"-51 1/8"  30 33
S3656-P 54"-59" 44 9/16"-51 1/8" 36 39
S4856-P 54"-59" 44 9/16"-51 1/8" 48 51
         
S3062-P 60"-65" 51 7/16"-57 3/4"  30 33
S3662-P 60"-65" 51 7/16"-57 3/4"  36 39
S4862-P 60"-65" 51 7/16"-57 3/4"  48 51
         
S3068-P 66"-71" 58 1/16"-62 1/4"  30 33
S3668-P 66"-71" 58 1/16"-62 1/4"  36 39
S4868-P 66"-71" 58 1/16"-62 1/4"  48 51
         
S3074-P 72"-77" 64 9/16"-68 7/8"  30 33
S3674-P 72"-77" 64 9/16"-68 7/8"  36 39
S4874-P 72"-77" 64 9/16"-68 7/8"  48 51
         
S3080-P 78"-83" 69 1/4"-75 3/8"  30 33
S3680-P 78"-83" 69 1/4"-75 3/8"  36 39
S4880-P 78"-83" 69 1/4"-75 3/8"  48 51
         
S3086-P 84"-89" 75 3/4"-81 13/16"  30 33
S3686-P 84"-89" 75 3/4"-81 13/16"  36 39
S4886-P 84"-89" 75 3/4"-81 13/16"  48 51
         
S3090-P 90"-95" 82 3/16"-86 3/4" 30 33
S3690-P 90"-95" 82 3/16"-86 3/4" 36 39
S4890-P 90"-95" 82 3/16"-86 3/4" 48 51
         
S3098-P 96"-101" 88 9/16"-93 3/16"  30 33
S3698-P 96"-101" 88 9/16"-93 3/16"  36 39
S4898-P 96"-101" 88 9/16"-93 3/16"  48 51
         
S30104-P 102"-107" 93 9/16"-99 9/16"  30 33
S36104-P 102"-107" 93 9/16"-99 9/16"  36 39
S48104-P 102"-107" 93 9/16"-99 9/16"  48 51
         
S30110-P 108"-113" 99 15/16"-105 7/8"  30 33
S36110-P 108"-113" 99 15/16"-105 7/8"  36 39
S48110-P 108"-113" 99 15/16"-105 7/8"  48 51
         
S30116-P 114"-119" 106 1/4"-111"  30 33
S36116-P 114"-119" 106 1/4"-111"  36 39
S48116-P 114"-119" 106 1/4"-111"  48 51
         
S30122-P 120"-125" 112 9/16"-117 5/16" 30 33
S36122-P 120"-125" 112 9/16"-117 5/16" 36 39
S48122-P 120"-125" 112 9/16"-117 5/16" 48 51
         
S30128-P 126"-131" 117 3/4"-123 5/8"  30 33
S36128-P 126"-131" 117 3/4"-123 5/8"  36 39
S48128-P 126"-131" 117 3/4"-123 5/8"  48 51
         
S30134-P 132"-137" 124 1/16"-129 7/8" 30 33
S36134-P 132"-137" 124 1/16"-129 7/8" 36 39
S48134-P 132"-137" 124 1/16"-129 7/8" 48 51
         
S30140-P 138"-144" 130 5/16"-136 1/16"  30 33
S36140-P 138"-144" 130 5/16"-136 1/16"  36 39
S48140-P 138"-144" 130 5/16"-136 1/16"  48 51

CHART II
PRICING FOR OSHA STAIRS WITH GALVANIZED FRAME
Back to Top
This is a steep incline stair not acceptable for public
access, office use, or residential applications.
Steel Stair Treads
diamond plate stair treads
Bar grating stair treads are safe, self-
cleaning, skid-resistant and economical.

Order Online, by Phone, or by E-Mail

~ Add items to your online shopping cart ~
Click a Price of the item you wish to purchase.

FRAME FINISH-GALVANIZED TREAD SELECTION
OSHA
TYP.
MODEL NO.
PRICING
HEIGHT
RANGE
(Floor to Floor)
HORIZONTAL
RUN
TREAD
WIDTH
OVERALL
WIDTH
(B)
GAL. BAR
GRATING
8 9/16" TREAD
OPEN RISER
(C)
GAL. DIA.
PLATE
9" TREAD
OPEN RISER
S3038-G 36"-41" 26 9/16"-33 5/8" 30 33
S3638-G 36"-41" 26 9/16"-33 5/8" 36 39
S4838-G 36"-41" 26 9/16"-33 5/8" 48 51
         
S3044-G 42"-47" 33 3/4"-40 5/16"  30 33
S3644-G 42"-47" 33 3/4"-40 5/16"  36 39
S4844-G 42"-47" 33 3/4"-40 5/16"  48 51
         
S3050-G 48"-53" 40 9/16"-44 5/16"  30 33
S3650-G 48"-53" 40 9/16"-44 5/16"  36 39
S4850-G 48"-53" 40 9/16"-44 5/16"  48 51
         
S3056-G 54"-59" 44 9/16"-51 1/8"  30 33
S3656-G 54"-59" 44 9/16"-51 1/8" 36 39
S4856-G 54"-59" 44 9/16"-51 1/8" 48 51
         
S3062-G 60"-65" 51 7/16"-57 3/4"  30 33
S3662-G 60"-65" 51 7/16"-57 3/4"  36 39
S4862-G 60"-65" 51 7/16"-57 3/4"  48 51
         
S3068-G 66"-71" 58 1/16"-62 1/4"  30 33
S3668-G 66"-71" 58 1/16"-62 1/4"  36 39
S4868-G 66"-71" 58 1/16"-62 1/4"  48 51
         
S3074-G 72"-77" 64 9/16"-68 7/8"  30 33
S3674-G 72"-77" 64 9/16"-68 7/8"  36 39
S4874-G 72"-77" 64 9/16"-68 7/8"  48 51
         
S3080-G 78"-83" 69 1/4"-75 3/8"  30 33
S3680-G 78"-83" 69 1/4"-75 3/8"  36 39
S4880-G 78"-83" 69 1/4"-75 3/8"  48 51
         
S3086-G 84"-89" 75 3/4"-81 13/16"  30 33
S3686-G 84"-89" 75 3/4"-81 13/16"  36 39
S4886-G 84"-89" 75 3/4"-81 13/16"  48 51
         
S3090-G 90"-95" 82 3/16"-86 3/4" 30 33
S3690-G 90"-95" 82 3/16"-86 3/4" 36 39
S4890-G 90"-95" 82 3/16"-86 3/4" 48 51
         
S3098-G 96"-101" 88 9/16"-93 3/16"  30 33
S3698-G 96"-101" 88 9/16"-93 3/16"  36 39
S4898-G 96"-101" 88 9/16"-93 3/16"  48 51
         
S30104-G 102"-107" 93 9/16"-99 9/16"  30 33
S36104-G 102"-107" 93 9/16"-99 9/16"  36 39
S48104-G 102"-107" 93 9/16"-99 9/16"  48 51
         
S30110-G 108"-113" 99 15/16"-105 7/8"  30 33
S36110-G 108"-113" 99 15/16"-105 7/8"  36 39
S48110-G 108"-113" 99 15/16"-105 7/8"  48 51
         
S30116-G 114"-119" 106 1/4"-111"  30 33
S36116-G 114"-119" 106 1/4"-111"  36 39
S48116-G 114"-119" 106 1/4"-111"  48 51
         
S30122-G 120"-125" 112 9/16"-117 5/16" 30 33
S36122-G 120"-125" 112 9/16"-117 5/16" 36 39
S48122-G 120"-125" 112 9/16"-117 5/16" 48 51
         
S30128-G 126"-131" 117 3/4"-123 5/8"  30 33
S36128-G 126"-131" 117 3/4"-123 5/8"  36 39
S48128-G 126"-131" 117 3/4"-123 5/8"  48 51
         
S30134-G 132"-137" 124 1/16"-129 7/8" 30 33
S36134-G 132"-137" 124 1/16"-129 7/8" 36 39
S48134-G 132"-137" 124 1/16"-129 7/8" 48 51
         
S30140-G 138"-144" 130 5/16"-136 1/16"  30 33
S36140-G 138"-144" 130 5/16"-136 1/16"  36 39
S48140-G 138"-144" 130 5/16"-136 1/16"  48 51

CHART III
PRICING FOR OSHA STAIRS WITH DUPLEX COLORZINQ FRAME

Back to Top

This is a steep incline stair not acceptable for public
access, office use, or residential applications.
Steel Stair Treads
diamond plate stair treads
Bar grating stair treads are safe, self-
cleaning, skid-resistant and economical.

Order Online, by Phone, or by E-Mail

~ Add items to your online shopping cart ~
Click a Price of the item you wish to purchase.

FRAME FINISH-GALVANIZED & PAINTED TREAD SELECTION
OSHA
TYP.
MODEL NO.
PRICING
HEIGHT
RANGE
(Floor to Floor)
HORIZONTAL
RUN
TREAD
WIDTH
OVERALL
WIDTH
(A)
COLOR ZINQ
BAR GRATING
8 9/16" TREAD
OPEN RISER
(C)
COLOR ZINQ
DIA. PLATE
9" TREAD
OPEN RISER
S3038-GP
36"-41"
26 9/16"-33 5/8"
30
33
S3638-GP
36"-41"
26 9/16"-33 5/8"
36
39
S4838-GP
36"-41"
26 9/16"-33 5/8"
48
51
 
S3044-GP
42"-47"
33 3/4"-40 5/16" 
30
33
S3644-GP
42"-47"
33 3/4"-40 5/16" 
36
39
S4844-GP
42"-47"
33 3/4"-40 5/16" 
48
51
 
S3050-GP
48"-53"
40 9/16"-44 5/16" 
30
33
S3650-GP
48"-53"
40 9/16"-44 5/16" 
36
39
S4850-GP
48"-53"
40 9/16"-44 5/16" 
48
51
 
S3056-GP
54"-59"
44 9/16"-51 1/8" 
30
33
S3656-GP
54"-59"
44 9/16"-51 1/8"
36
39
S4856-GP
54"-59"
44 9/16"-51 1/8"
48
51
 
S3062-GP
60"-65"
51 7/16"-57 3/4" 
30
33
S3662-GP
60"-65"
51 7/16"-57 3/4" 
36
39
S4862-GP
60"-65"
51 7/16"-57 3/4" 
48
51
 
S3068-GP
66"-71"
58 1/16"-62 1/4" 
30
33
S3668-GP
66"-71"
58 1/16"-62 1/4" 
36
39
S4868-GP
66"-71"
58 1/16"-62 1/4" 
48
51
 
S3074-GP
72"-77"
64 9/16"-68 7/8" 
30
33
S3674-GP
72"-77"
64 9/16"-68 7/8" 
36
39
S4874-GP
72"-77"
64 9/16"-68 7/8" 
48
51
 
S3080-GP
78"-83"
69 1/4"-75 3/8" 
30
33
S3680-GP
78"-83"
69 1/4"-75 3/8" 
36
39
S4880-GP
78"-83"
69 1/4"-75 3/8" 
48
51
 
S3086-GP
84"-89"
75 3/4"-81 13/16" 
30
33
S3686-GP
84"-89"
75 3/4"-81 13/16" 
36
39
S4886-GP
84"-89"
75 3/4"-81 13/16" 
48
51
 
S3090-GP
90"-95"
82 3/16"-86 3/4"
30
33
S3690-GP
90"-95"
82 3/16"-86 3/4"
36
39
S4890-GP
90"-95"
82 3/16"-86 3/4"
48
51
 
S3098-GP
96"-101"
88 9/16"-93 3/16" 
30
33
S3698-GP
96"-101"
88 9/16"-93 3/16" 
36
39
S4898-GP
96"-101"
88 9/16"-93 3/16" 
48
51
 
S30104-GP
102"-107"
93 9/16"-99 9/16" 
30
33
S36104-GP
102"-107"
93 9/16"-99 9/16" 
36
39
S48104-GP
102"-107"
93 9/16"-99 9/16" 
48
51
 
S30110-GP
108"-113"
99 15/16"-105 7/8" 
30
33
S36110-GP
108"-113"
99 15/16"-105 7/8" 
36
39
S48110-GP
108"-113"
99 15/16"-105 7/8" 
48
51
 
S30116-GP
114"-119"
106 1/4"-111" 
30
33
S36116-GP
114"-119"
106 1/4"-111" 
36
39
S48116-GP
114"-119"
106 1/4"-111" 
48
51
 
S30122-GP
120"-125"
112 9/16"-117 5/16"
30
33
S36122-GP
120"-125"
112 9/16"-117 5/16"
36
39
S48122-GP
120"-125"
112 9/16"-117 5/16"
48
51
 
S30128-GP
126"-131"
117 3/4"-123 5/8" 
30
33
S36128-GP
126"-131"
117 3/4"-123 5/8" 
36
39
S48128-GP
126"-131"
117 3/4"-123 5/8" 
48
51
 
S30134-GP
132"-137"
124 1/16"-129 7/8"
30
33
S36134-GP
132"-137"
124 1/16"-129 7/8"
36
39
S48134-GP
132"-137"
124 1/16"-129 7/8"
48
51
 
S30140-GP
138"-144"
130 5/16"-136 1/16" 
30
33
S36140-GP
138"-144"
130 5/16"-136 1/16" 
36
39
S48140-GP
138"-144"
130 5/16"-136 1/16" 
48
51

FACTORY LOAD TEST
load test stair 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.
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


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