![Reinforced rectangular shafts with cup 1 Reinforced rectangular shafts with cup fotorett](https://eurobeton.it/wp-content/uploads/fotorett.jpg)
ITEM OF CONTRACT SPECIFICATIONS
SHAFTS WITH RECTANGULAR AND SQARE SECTION IN VIBRATED REINFORCED CONCRETE, MODULAR, SECTIONAL WITHOUT BASE, WITH REINFORCED SELF-LOCKING CUP-JOINT AND BREAKTHROUGH MARKS AT HALF THICKNESS FOR THE EVENTUALE INSERTION OF PIPES.