MAGINOT LINE
The ideas and the construction

Building a fort

jThe construction of a fort start with the drilling of the galleries. Often shafts where build to get fresh air and materials down. When these shafts where no longer needed they where closed or used as emergency exit. Where the blocks where build they first made space and the shafts down. After that the block was build from concrete in one piece and the armament was put on it's place. The galleries where build from stones and finished with a small layer of concrete.
When outside the fort was finished the interior was installed including cables, railway and electrical equipment. When it was ready the fort was supplied with food, water, ammunition, etc.

Outside the barbed wires and anti-tan rails was placed. A special digging machine created a small groove for the electric cable and the telephone cable.
 

thickness of the walls and roofs
protection	against calibre	walls	roof
nr. 1	160 mm	1,75 m	1,50 m
nr. 2	240 mm	2,25 m	2,00 m
nr. 3	300 mm	2,75 m	2,50 m
nr. 4	420 mm	3,50 m	3,50 m

Thickness of the concrete depends of the importance of the block and the position against enemy fire