Description

The project, located in the municipality of Maia, consists of the construction of a new gallery, with an extension of 367m, to the north of the two existing ones, downwards (Ermesinde / Porto), including the expansion and improvement for 2x4 roads.

The main activities include:

• Excavation (explosives and mechanical means).
• Temporary excavation support (shotcrete with metallic fibers.
• Swellex nailing, metal crankshafts, micro-pile tapping, fiberglass nailing).
• Waterproofing and drainage (2mm PVC geotextile and membrane).
• Ultimate reinforced liner.
• Electromechanical installations (lighting, ventilation, fire extinguishing system, CCTV).

Responsible

Being a work of great social impact, all the principles of good construction rules and greater care in monitoring existing buildings in the surroundings.