Table 1: Alternating Tread Stair Technical & Dimensional Data
|
Dimensional/Technical Data |
56° Steel |
68° Steel |
68° Aluminum
|
|
Minimum Height, Floor to Floor |
36"
(91.44 cm)
|
42"
(106.68 cm)
|
24"
(60.96 cm)
|
|
Maximum Height, Floor to Floor ** |
240"
(609.60 cm)
|
240"
(609.60 cm)
|
216"
(548.64 cm)
|
|
Overall Height, (Standard Handrails) |
H + 42"
(H + 106.68 cm)
|
H + 42"
(H + 106.68 cm)
|
H + 42"
(H + 106.68 cm)
|
|
Overall Height, (Optional Parapet) |
H + 5 3/4"
(H + 14.61 cm)
|
H + 5 3/4"
(H + 14.61 cm)
|
H + 3 3/4"
(H + 9.53 cm)
|
|
Overall Width |
23"
(58.42 cm)
|
23"
(58.42 cm)
|
23"
(58.42 cm)
|
Run
(within +/- 1" (2.54 cm)) |
0.675 (H-6.42") + 9.5"
0.675(H-16.301 cm) + 24.13 cm
|
0.404 (H-7.517") + 9.5"
0.404 (H-19.093 cm) + 24.13 cm
|
0.404 (H-7.175") + 9.5"
0.404 (H-18.225 cm) + 24.13 cm
|
|
Recommended Minimum Floor Opening Width |
35"
(88.90 cm)
|
|
Recommended Minimum Floor Opening, Length |
70" (177.8 cm) + 2/3 Floor Thickness
|
62" (157.48 cm) + 2/5 Floor Thickness
|
|
Minimum Riser Height |
6.417"
(16.299 cm)
|
7.517"
(19.093 cm)
|
7.175"
(18.225 cm)
|
|
Maximum Riser Height |
7.700"
(19.558 cm)
|
9.020
(22.911 cm)
|
9.566"
(24.298 cm)
|
|
Approximate Net Weight |
1.428(H) + 32 lbs. (H <120")
1.688(H) + 32 lbs. (H ≥120")
0.255(H) + 14.52 kg (H <3.05m)
0.301(H) + 15.42 Kg (H ≥3.05m)
|
1.332(H) + 21 lbs. (H <144")
1.488(H) + 31 lbs. (H ≥144")
0.238(H) + 9.53 kg (H <3.66m)
0.266(H) + 14.06 Kg (H ≥3.66m)
|
.690 (H) + 20 lbs.
0.1232 (H) + 9.07 Kg
|