General

A bolt having jagged edges to prevent its being withdrawn from the object into which it is driven.

In medieval construction, a mark cut in a dressed stone to identify the stonecutter.

Soil or rock in place before excavation or blasting .

1. A measure of the volume of a mass of soil or rock, before excavation, in its natural position. 2.

The number of cubic meters of material in its original place in the ground.

Aggregate taken directly from natural deposits; contains both large and small stones.

Compared to lake sand, a sand having sharp edges so that when used in plastering it results in a better

The number of cubic yards of material in its original place in the ground.

A room used for dining, social gatherings, or meetings accommodating large numbers of people.