The longitudinal prestressing of the slabs is achieved by ______

In stage construction, the main function of the longitudinal prestress is to prevent ______

The design principles of continuous flat slab floors are similar to ______

Fold plates are widely used for ______

The base slab forming the floor or tank is generally made of ______

The joint between the walls of the tank and floor slab may be any of the following of?

In the case of tapered poles with a reduced cross section the effective prestressing force should be ______

The compressive state of stress in the shell membrane results in which construction?