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Outdoor Stairs and Other Heavy Duty Stair Kits
As part of
our extensive line of wood spiral staircases, metal spiral staircases
and custom staircases – both in kit form and fully assembled - Stairways
Inc. offers standard and custom heavy duty spiral stair kits and other
Outdoor Stairs, in both
steel and aluminum. Heavy-duty spiral staircase kits are assembled
in-house, and then dismantled and disassembled for economical shipment
to you, the customer. Our disassembly process also allows for easy
reassembly on the job site, with the added advantage of a finished metal
spiral staircase appearance and finish. Standard heavy-duty spiral
stairs are available in steel or aluminum.
Standard
outdoor stairs and heavy-duty spiral staircase kits feature the following:
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 Heavy Duty
¼” Base Plate
3.5” Outer
Diameter Center Column
Continuous
Sleeve Tread Hubs
Twelve (12)
¾” Solid Round Steel Balusters, complete with machined bottoms
and milled top countersunk holes for attachment to the 1.5” Round Steel
Handrail
Eleven (11)
3/16” Steel Treads
Complete
Set of Fasteners
Step-by-Step Assembly Instructions
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Outdoor Stairs and Heavy-duty
spiral stair kits are available in diameters from 40” to 72”; tread
sizes range from 18” to 34”, with landing sizes from 21” to 37”.
Heavy-duty steel spiral staircase kits weigh from 403 pounds to 519
pounds; heavy-duty aluminum spiral stair kits weigh from 180 pounds to
275 pounds.
Optional
handrails available with heavy-duty spiral staircase kits include:
1.25” Round
Steel, Aluminum or Brass
1.5” Round
Steel, Aluminum or Brass
1.5” x 2”
Square Solid Wood (Oak), or specify preference
2” Round
Solid Wood (Oak), or specify preference
Several
types of balusters are offered with heavy-duty spiral stair kits, such
as:
0.75”
Center Square or Round, in Steel, Aluminum or Brass
0.75”
Center, 4” Spacing, in Steel, Aluminum or Brass
0.75”
Center with Collar, in Steel, Aluminum or Brass
0.75”
Center Spiral in Steel
0.75”
Center with Ornate Design, in Steel, Aluminum or Brass
Numerous
styles of treads are available with heavy-duty spiral staircase kits,
including:
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Bar Grating |
Radial Grating |
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Checker Plate |
Smooth Steel with Oak Overlay |
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Filigree Pattern |
Continuous Sleeves – each tread sleeve is cut
out to exact height (metal closed ends are
optional) |
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Traditional Pattern |
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Heavy-duty
spiral stair kits produced by Stairways Inc. are more expensive, due to
the special handling and manufacturing processes used in the
construction of these units. Another advantage to our heavy-duty spiral
staircase kits is all parts that are used for fully assembled spiral
staircases are available for heavy-duty spiral stair kits (except for
balusters). No matter what your heavy-duty spiral staircase kit
requirements are, Stairways Inc. can meet the needs of your specific
application – call us today for prompt customer service!
Stair Features:
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Easy To Assemble |
Interior Or Exterior |
Vinyl Or Optional Handrail |
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Fast Installation Time
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No Welding Required |
Adjstable Height |
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All Parts Included
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Any Height |
Hidden Welds |
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No Special Skills Needed |
Any Diameter |
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Space Saving
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All Steel Construction |
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Economical
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Fast Delivery Worldwide |
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Stock Stair Can Be Installed In Either Clockwise Or Counterclockwise
Directions |
Code:
BOCA and UBC codes require a minimum 60" diameter (64" wood)
with 30° treads and a 4 inch baluster spacing. Before ordering,
check with your local building inspector for your code requirements.
Installation:
Our Kit Stair systems come in a box with instructions and can
be installed by two people in less than a day without the need for
any special tools or expensive equipment.
Table of Risers
| 30°
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Finish
Floor
Height |
Number
of Steps
30° |
Degree
of
Circle |
| 85" to 95" |
9 |
270 |
| 96" to 104" |
10 |
300 |
| 105" to 114" |
11 |
330 |
| 115"to 123" |
12 |
360 |
| 124" to 133" |
13 |
390 |
| 134" to 142" |
14 |
420 |
| 143" to 152" |
15 |
450 |
| 153" to 161" |
16 |
480 |
| 162" to 171" |
17 |
510 |
| 172" to 180" |
18 |
540 |
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Layout
12 Treads per circle. Make opening 2" larger
than stair diameter.
11 Treads are standard. |
Standard Spiral Kit:
We can ship these kits fast and economically mostly from stock.
Universal direction and readily available in heights up to 114".
Taller elevations are available.
All Wood Spiral Kit::
All solid wood construction. 12 sided center column. Each all wood
kit stair is built by hand, disassembled and placed into a box ready
for shipment. It can be used with other options we offer like additional
balusters, and custom handrails from the completely assembled wood
stair line.
Heavy Duty Kit:
Built with 3/16" steel treads, 3/4" solid balusters milled to fit
the exact angle of handrail. Built one stair at a time, disassembled,
and placed in a box ready for shipment to your jobsite. For residential
and industrial installations that require kits, this stair is the
best.
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| 48 SKD w/ oak handrail and treads |
48 SKD Standard Kit |
48 AWKD |
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48 SKD w/ 1-1/4" Rd. brass
handrail, 3/4" Rd. brass balusters
and oak treads |
72 HDKD Heavy Duty Kit, Aluminum |
48 AL-KD Standard Aluminum Kit |
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Includes a 3.50" OD center column with a 10" square ¼"
thick base plate, formed landing, 11 - 12 gauge smooth steel
treads, 11 ¾" square steel balusters, and a coil of 1 ¼"
black vinyl handrail, 36" tall landing rail with ¾" balusters,
standard red oxide primer finish, and all necessary fasteners
and instructions. |
| Standard Kits |
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Steel |
Aluminum |
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| Diameter |
Model# |
Weight (lb.) |
Model# |
Weight (lb.) |
Tread Size |
Landing Size |
40"
48"
52"
60"
64"
72" |
40-SKD
48-SKD
52-SKD
60-SKD
64-SKD
72-SKD
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270
290
300
325
340
360 |
40-AKD
48-AKD
52-AKD
60-AKD
64-AKD
72-AKD |
135
146
153
166
174
190 |
18"
22"
24"
28"
30"
34" |
21"
25"
27"
31"
33"
37"
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Standard Wood Spiral Kit includes center column, base
plate, (11) 1 ¼" wood treads, (12) 1 ¼" square wood balusters,
solid oak handrail 1½" X 2", with all fasteners and instructions
needed to assemble the stair. The wood spiral can be assembled
around a twelve-sided solid oak column. The red oak treads
are mortised and screwed into the center column. The balusters
are attached to the end of the tread, and bolted into the
fine curved top handrail. After assembly, the solid oak
spiral stair kit looks like a fine piece of furniture.
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| Wood Kits |
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Wood |
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| Diameter |
Model# |
Weight (lb.) |
Tread Size |
Landing Size |
40"
48"
52"
60"
64"
72" |
40-WKD
48-WKD
52-WKD
60-WKD
64-SKD
72-WKD
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202
231
250
290
308
347 |
18"
22"
24"
28"
30"
34" |
21"
25"
27"
31"
33"
37"
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Standard Heavy Duty Kit includes a 3 1/2" OD center column,
heavy duty 1/4" base plate, (11) 3/16" steel treads, (12)
¾" solid round steel balusters, with a machined bottom and
milled top countersunk holes for attachments to the 1½"
round steel handrail, continuous sleeve tread hubs, complete
with fasteners and instructions of installation of the stair.
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| Heavy Duty Kits |
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Steel |
Aluminum |
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| Diameter |
Model# |
Weight (lb.) |
Model# |
Weight (lb.) |
Tread Size |
Landing Size |
40"
48"
52"
60"
64"
72" |
40-SKD-HD
48-SKD-HD
52-SKD-HD
60-SKD-HD
64-SKD-HD
72-SKD-HD
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403
430
444
460
492
519 |
40-AKD-HD
48-AKD-HD
52-AKD-HD
60-AKD-HD
64-AKD-HD
72-AKD-HD |
180
200
210
230
245
275 |
18"
22"
24"
28"
30"
34" |
21"
25"
27"
31"
33"
37" |
Handrails
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1-1/4" Round
Steel, Alum., Brass |
1-1/2" Round
Steel, Alum., Brass |
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1-1/2" x 2" Square
Solid Wood, Oak, Specify |
2" Round
Solid Wood, Oak, Specify |
Balusters
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3/4" Center
Square or Round
Steel, Alumn., Brass |
3/4" Center
4" Spacing
Steel, Alumn., Brass |
3/4" Center with Collar
Steel, Alumn., Brass |
3/4" Center
Spiral
Steel |
3/4" Center with Ornate Design
Steel, Alumn., Brass |
Treads
Checker Plate |
Bar Grating |
Continuous Sleeves
Each Tread Sleeve
Cut out to Exact Height
* Metal closed ends optional |
Filigree Pattern |
Smooth Steel
with Oak Overlay |
Radial Grating |
Traditional Pattern |
Kit Stair Installation
Standard Kit Stair - Steel or Aluminum
Fig. 1. a |
Receiving your Order
When you receive your kit stair, unpack it and make sure
you have received all of your parts according to your proposal
order we have sent you. It will show you the number of treads;
balusters; landing; handrail and guard rail.
( Fig. 1.a )
Tools needed for installation
There are no specialty tools needed for this installation.
You will need a drill & drill bits (1/8", 3/8", and 5/16");
hammer; level; measuring tape; flat head screw driver; a
tri-square (optional) and small set of tools (wrenches and
socket set). |
Fig. 1. b |
Getting started
Step One:
Stand center column in the opening and slide treads,
pan face down (flat surface up), onto the column.
The treads are all the same. Partially tread set screws
into treads making sure to slide the landing on last. ( Fig.1.b )
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Fig. 2. c |
Installing the stair
Step Two:
Slide the landing platform over the center column to
the desired finish floor height. (If your stair takes a
wood overlay lower the landing by that thickness of the
wood overlay). Using the lag screws supplied, attach the
landing flush with the finish floor. Level the center column
and attach the base plate to the floor with anchors supplied.
Next level the landing and tighten the set screws.
( Fig. 2.c ) |
Fig. 2. d |
Step Three:
Starting with the top tread, place a main baluster in
the slot closest to the landing and attach the baluster
to the tread with a 1/4" x 1 1/2" carriage bolt, nut and
washer supplied. Make sure that the flange on the top of
the main baluster is facing away from the tread.
( Fig. 2.d ) |
Fig. 3. e |
Step Four:
Align the top tread up to the proper riser height listed
in the order. If your tread has wood overlay, lower the
tread by the thickness of the wood overlay. The riser height
is measured from the top of the landing to the top of the
tread below. Next level your main baluster and bolt it to
the landing and then level the tread and tighten the set
screws on the sleeve. (Always tighten balusters bolts first
and the set screws on the sleeve last)
See ( Fig. 3.e ) |
Fig. 3. f |
Step Five:
Slide the next tread up and follow the procedures in
Step four. Continue this procedure with the remaining treads.
The last baluster only has two holes 1" apart. Level it
and fasten to tread and to the floor by using the 3/4" shoe
and anchor bolts supplied.
Your stair should look like this ( Fig. 3.f )
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Fig. 3. g |
Step Six:
Next lay your handrail on top of the balusters making
sure you leave enough overlap on both ends of the rail to
be trimmed off later. Starting with the second baluster
from the bottom, drill a pilot hole with a small drill bit
(1/8") from underneath the baluster into the handrail. Next
slide the handrail to one side and drill a 3/8" hole into
the pilot hole. Insert the toggle bolt with the washer into
the baluster as shown in ( Fig. 3.g )
Then insert the toggle bolt into the handrail and loosely
tighten the bolt. Follow the same procedure for the
balance of the treads working your way to the top baluster.
Attach the bottom baluster last. |
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Fig. 4.h
Fig. 4. i |
Step Seven
Cut the ends of the handrail approximately 1/2" away
from the bottom and top baluster and insert plastic end
caps.
See (Fig. 4.h) before
and see ( Fig. 4.i ) after
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Fig. 4. j |
Step Eight:
The next process is to attach the landing rail or rails.
Place the landing rail on the side of your stair which is
required by your order and using the self drilling and tapping
screws supplied, fasten the top of the landing rail to the
center column at a position 36" above the landing. After
the top of the landing rail is attached, drill a 5/16" hole
in the outside rail post from underneath the landing slot
and bolt with a 1/4" x 1 1/4" carriage bolt supplied.
( Fig. 4.j )
Finish:
Check to see that all bolts and set screws
are securely fastened. Your stair is then finished
and ready for painting. |
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Fig. 5. k
Fig. 5. l |
Installing the wood overlay (Optional)
After you have installed the landing; treads; balusters
and handrail and guard rail, it is time for the wood overlay.
(Make sure you have allowed for the thickness of the
wood during the installation of your metal landing and treads).
Landing
Drill a 5/16" hole on top of the landing approximately
2" away from each corner and place wood overlay on top of
the steel landing and fasten from underneath with the screws
supplied. ( Fig. 5. k)
Treads
As before you will need to drill holes on top of the
metal treads for the wood overlay. This time you will need
to drill three 5/16" holes.
From the widest part of the metal tread drill a 5/16"
hole approximately a 1 1/2" away at each corner.
Next drill a 5/16" hole at the smallest part of the metal
tread by the pipe sleeve approximately 3" away in the center.
Place the wood overlay on top of the steel tread and
fasten from underneath with screws supplied.
Follow the same procedure for the balance of the treads.
( Fig. 5.l ) |
Looking for our
previous metal kits page?
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