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Stock Number:
USS66-20-HT
Stair Diameter:
6' - 6"
(198.12cm)
Minimum Opening:
41" x
80" (104.14cm x 203.2cm)
Outside Radius:
39"
(99.06cm)
Inside Radius:
10"
(25.4cm) - Optional 6" (15.24cm) or 12"
(30.48cm)
Stringer Width, Outer:
10-1/2"
(26.04cm)
Stringer Width, Inner:
5 - 3/4"
(14.61cm)
Stringer Thickness:
1 -1/2"
(38.1mm)
Tread Width at Outer Stringer:
12 - 1/2"
(31.75cm)
Tread Width at Inner Stringer:
4 - 3/4"
(12.07cm)
Tread Thickness:
1 -1/2"
(38.1 mm)
Tread Passageway:
26"
(66.04) - Optional 24" (60.96cm) or 30"
(76.2cm)
Handrail Width:
3 - 1/2"
(8.89cm) - Opt. 4 - 1/2" (11.43) or 5
- 1/2" (13.97cm)
Handrail Thickness:
1- 1/2"
(38.1 mm)
Baluster Spacing:
Approx. 6"
(15.24cm), - Opt. 4" (10.16cm), or alternating
2", 3", 2"
Turn per Inch of Rise:
1.816 Degrees
Rise per Degree of Turn:
0.55"
(13.97mm)
Floor to Floor
Risers
Degrees of Turn
74" to 82" (187.96cm to 208.28cm)
9
119
to 132 Degrees
>82"
to 90" (208.28cm to 228.60cm)
10
132
to 147 Degrees
>90"
to 98" (228.60cm to 248.92cm)
11
147
to 161 Degrees
>98"
to 106" (248.92cm to 2469.24cm)
12
161
to 176 Degrees
>106"
to 114" (269.24cm to 289.56cm)
13
176
to 191 Degrees
>114"
to 122" (289.56cm to 309.88cm)
14
191
to 206 Degrees
>122"
to 130" (309.88cm to 330.20cm)
15
206
to 220 Degrees
Tread Capacity lbs. / kgs.
768 / 348
Stair Capacity lbs. / kgs. @ 114" Ht.
3006 / 1364
Specifications for heights up to 190" (4.83m) are available upon request.
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