Identify the type of Arch given below.

___________ is the wedge shaped unit at the Crown of an arch.

The stairs which are kept in motion by a revolving drum is known as a ___

The formwork for _______ consists of sheets, studs, Wales, ties and braces.

_________ stairs have any geometrical shape and they require no newel posts.

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

Identify the type of Arch given below.

The ___ is used for formwork when it is desired to reuse the formwork several times.