CM2

The CM2 principle

Specifics

 

Span from 1.5 m to 4 m by step of 0.50 m.

Backfilling height from 0.60 m to 35 m.

3 modular forms (ogival vault, semicircular, basket-handle), depending on the backfilling height.

 

Ogival vault
ogive
L
(m)
H
(m)
R
(m)
r
(m)
S
(m²)
1.491.351.230.431.50
1.751.841.900.582.50
2.252.092.350.703.50
2.502.542.600.865.00
3.003.133.201.007.50
Semicircular
CM2
L
(m)
H
(m)
R
(m)
S
(m²)
2.001.141.001.80
2.501.391.252.74
3.001.641.503.88
3.501.891.755.22
4.002.142.006.75
Raised semicircular
(exemple for a level of 3,50m)
CM2
Height (excluding arch)
H (m)
Interior height
H (m)
Usable surface
H (m)
0.001.895.20
0.081.975.50
0.222.116.00
0.362.226.50
0.512.407.00
0.652.547.50
0.792.688.00
0.942.838.50
1.082.979.00
1.223.119.50
1.363.2510.00
1.513.4010.50
Basket-handle
CM2
L
(m)
H
(m)
R
(m)
r
(m)
S
(m²)
2.000.851.400.601.35
2.501.021.750.752.04
3.001.202.100.902.88
3.501.382.451.053.85
4.001.552.801.204.96

Advantages

 

Flexibility of structure
Adapted weight of parts
Ease of implementation
More than 40 possible combinations
Quality control of the product

Last 10 years, more than 600 works installed, though 25 km of CM2 structures are designed, studied, fabricated and erected for:

Technical galleries
Small size underpasses
Hydraulic structures

 

Wastewater systems