A wall constructed with stones to protect slopes of cuttings in natural ground from the action of weathering agents, is called

The width of the hollow space between two walls of a cavity wall should not exceed

The X-ray rooms are plastered with

The process of working a flat for the finishing coat, is known

The minimum strength of the mortar used in load bearing brick masonry, is

The thickness of a reinforced brick partition wall, is generally kept

The wedge shaped bricks forming an arch ring, are called

A pointed arch which forms isosceles or equilateral triangle, is generally known as

For pointing works, the ratio of mortar used is

Light weight mortar is prepared by using