The form work for an RCC floor consists of a _______ to receive the concrete.

___________ consist of slabs of Stones which are placed across the opening.

____________ is the lower half portion of the arch between the crown and the skewback.

________ stairs are now not frequently used.

The usual concrete mix for RCC lintel is _______ (cement:sand:aggregate).

Identify the type of Arch given below.

__________ arches can be constructed in rubble masonry or ashlar masonry.

The boxes for beams are play prepared from ____ sides and ____ bottom in formwork for an RCC floor.