Key stone - It is the highest
central wedge shaped block of an arch.
King closer - It is a brick which is cut in such a way that the
width of one of its end is half that of a full brick. It is formed by
cutting off the triangular piece , between the centre of one end and the
centre of one side.
King post roof truss - It is a form of roof truss which is commonly
used for spans varying from 5m to 9m.
Knotting - Knots exude resin. Knotting is the process of sealing the
knots by suitable means so that the resin from the knots may not destroy the
paint film by way of cracking , peeling or brown discoloration.