tenaille

The tenaille trace: Flanks back to back between the faces (fig. 16).

These works show various applications of the tenaille system.

The “tenaille” system and the “polygonal” system which grew out of it are mainly identified with the German school.

For a dry and level site he recommended a bastioned trace; but for wet ditches and for irregular ground, tenaille traces.

Tenaille bastion: Used when the flanked angle is too acute; that is, less than 70.