Construction of sewage systems in Poznań

45100000 – Site preparation work.

45110000 – Building demolition and wrecking work and earthmoving work.

45200000 – Works for complete or part construction and civil engineering work.

45231000 – Construction work for pipelines, communication and power lines.

45231220 – Construction work for gas pipelines.

45233000 – Construction, foundation and surface works for highways, roads.

45233120 – Road construction works.

45262600 – Miscellaneous special-trade construction work.

45311000 – Electrical wiring and fitting work.

45332400 – Sanitary fixture installation work.

45330000 – Plumbing and sanitary works.

45332000 – Plumbing and drain-laying work.

45332200 – Water plumbing work.