TRUST MADE EASY.

SELECTING LADDER LENGTH
www.hymer-alu.de
Calculation of ladder length
with known vertical height:
Vertical height in m
2.00 2.50 3.00
Rrequired ladder lengths in m to meet an angle of inclination of:
3.50
4.00
4.50
5.00
5.50
6.00
6.50
7.00
7.50
8.00
8.50
9.00
9.50
10.00
75° rung ladders
2.10
2.60
3.10
3.60
4.10
4.70
5.20
5.70
6.20
6.70
7.20
7.80
8.30
8.80
9.30
9.80
10.40
70° rung ladders
2.15
2.65
3.20
3.70
4.25
4.80
5.30
5.85
6.40
6.90
7.40
8.00
8.50
9.00
9.60
10.10
10.60
68° stepladders
2.20
2.70
3.25
3.80
4.35
60° stairs
2.30
2.90
3.50
4.10
4.60
5.20
5.80
45° stairs
2.80
3.50
4.20
4.90
5.60
The minimum lengths may be found in the table.
It is generally recommended to use the next longest
ladder length of the Hymer range.
Angle of inclination = 70°
(our recommendation for rung ladders)
= vertical height × factor 1.064
Angle of inclination = 75°
(still permissible for rung ladders)
= vertical height × factor 1.035
Angle of inclination = 68°
(stepladders)
= vertical height × factor 1.080
Angle of inclination = 60°
(stairs)
= vertical height × factor 1.155
Angle of inclination = 45°
(stairs)
= vertical height × factor 1.414
Example:
vertical height (upper contact point) = 7.00 m
when using a rung ladder: 7.00 m × 1.064
(70° angle of inclination) = 7.45 m (minimum size)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
Example:
Aluminium stepladder
Vertical height
= 2.50 m
Angle of inclination = 68°
Overhang
= approx. 103 cm
Ladder length = 2.50 × 1.08 = 2.70 m
An additional 5 cm may have to be added
to the overhang for the suspension device.
3.50
4.00
Vertical height (m)
450
5.00
75° 70° 68°
60°
Overhang including stile width (cm)
7