The flat, segmental, semicircular, horse-shoe and Stilted arches are ______

In ________ arrangement, the treads and Risers of stones are provided is in case of timber steps.

The formwork for an _______ consists of rows of the vertical post which carry small wooden beams at their tops.

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

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

The protecting part of the tread beyond the face of Riser is known as a ______

The vertical or Front member of the step, which is connected to the treads, is known as a ______

The ______ formwork should be neither too dry nor too wet.