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Interior and Exterior Wood Spiral Stairs


14 Ft. - 0 In. Diameter, Quarter Turn Series, Spiral Stair


Back to Product Specs

Stock Number:
USS140-86-QT
Stair Diameter:
14'- 0" (426.72cm)
Minimum Opening:
87" x 110 (220.98cm x 279.4cm)
Outside Radius:
84" (213.36cm)
Inside Radius:
43" (109.22cm)
Stringer Width, Outer:
11 - 1/4" (28-58cm)
Stringer Width, Inner:
8" (20.32cm)
Stringer Thickness:
2" (50.8mm) - Opt. 2 -1/2" (63.5mm) or 3" (76.2mm)
Tread Width at Outer Stringer:
12 -1/2" (31.75cm)
Tread Width at Inner Stringer:
7 - 1/2" (19.05cm)
Tread Thickness:
1 - 1/2" (38.1mm)
Tread Passageway:
37" (93.98cm) - Opt. 35" (88.9cm) or 36" (91.44cm)
Handrail Width:
4 - 1/2" (11.43cm) - Opt. 5 - 1/2" (13.97cm)
Handrail Thickness:
2" (50.8mm) - Opt. 2 - 1/2" (63.5mm) or 3" (76.2mm)
Baluster Spacing:
Approx. 6" (15.24cm), - Opt. 4" (10.16cm), or alternating 2", 3", 2"
Turn per Inch of Rise:
0.9375 Degrees
Rise per Degree of Turn:
1.067" (27.l mm)

Floor to Floor
Risers
Degrees of Turn
74" to 82" (187.96cm to 208.28cm)
10
62 to 69 Degrees
>82" to 90"   (208.28cm to 228.60cm)
11
69 to 77 Degrees
>90" to 98"   (228.60cm to 248.92cm)
12
77 to 84 Degrees
>98" to 106"   (248.92cm to 269.24cm)
13
84 to 92 Degrees
>106" to 114"   (269.24cm to 289.56cm)
14
92 to 99 Degrees
> 1 14" to 122"    (289.56cm to 09.88cm)
15
99 to 107 Degrees

Tread Capacity lbs. / kgs.
1080 / 492
Stair Capacity lbs. / kgs. @ 114" Ht.
7306 / 3316

Specifications for heights up to 190" (4.83m) are available upon request.






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