CM3

The CM3 principle

Patented structures, particularly well suited to strong heights of backfillings, consisting of two half-arches leaning one on the other’s key,combined longitudinally by junction, installed on a ledger line or a general concrete invert.

Specifics

Hydraulic section from 10 m2 to 55 m2.

Maximum height of backfilling: 35 m above the key.

Section (m²)r (m)R (m)Interior height (m)Opening (m)
10.001.384.833.404.12
12.501.384.833.984.15
15.001.854.654.154.70
20.002.406.004.845.40
25.002.406.005.405.98
30.002.636.575.926.55
34.003.047.595.647.71
40.003.047.596.847.52
48.003.568.907.218.78
50.003.568.907.408.76
55.003.568.908.018.64

Advantages

 

Mounting of structure without scaffolding

alternate support at the key of arch

Quick installation

CM3 principle is especially dedicated to underpasses strongly backfilled, adapted to all type of traffic, and allows the construction of :

Covered trenches
Hydraulic structures

 

Technical galleries