A Stair turning through three right angles is known as a ____ stair.

The ______ of formwork plays a significant role in the cost of concrete.

_________ types of arches are constructed from bricks which are cut to a wedge shaped by means of an axe.

In case of ___ stair, there is a well or hole or opening between the flights in the plan.

In the case of ____ the arrangement is made to show rectangular steps which contain Rebated joint.

At present, the lentils of _____ are widely used to span the openings for doors, windows, etc. in a structure.

It is found that moisture content of about ______ is appropriate for the timber formwork.

The projecting course at the upper part of a Pier or an abutment to stress the springing line is called as the _______