[8] Carnot wall
Description
The defensive buildings of the provision office and armoury were connected by a strong, free-standing wall that ran behind the rampart at intervals of 7 - 10 metres, a so-called Carnot wall, named after the French fortress engineer Lazare Nicolas Maguerite Carnot.
Carnot´s wall is an arcade wall that is aligned towards the rampart for infantry defence and replaces the missing front wall on the outer embankment. This combination of Carnot´s Wall and the rampart running in front of it was chosen at this location because the ground was swampy and boggy and this type of construction meant that less weight had to be stabilised.
The wall has a height of 5 metres and a maximum thickness of 2.60 metres. The inner wall has arches 4 metres wide, so that the wall is only 1.30 metres thick within the arches. Three embrasures are set into the wall under each arch.
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