The contract is for site infrastructure works. These works comprise the performance of the execution design, procurement and construction of the following:

Concrete service trenches (galleries):

— internal dimensions (width in mm x height in mm) ranging from: smallest 2 200 x 1 650, largest 2 700 x 5 500 and 4 300 x 2 850,

— average thickness of the walls: 300 mm,

— length of service trenches to be implemented: 3 000 lm.

Precipitation drainage:

— concrete pipe works.

Special foundations:

— reinforced concrete foundations for load centres including blast walls,

— reinforced concrete slabs for tanks or other equipment,

— inclusions expected: rails, embedded plates or others,

— example of dimensions to be considered (width in mm x length in mm): e.g. laydown area 17 slab: 48 200 x 45 300.