Civil and Building Engineering

Isometric Projections - a pictorial projection of a solid object on a plane surface drawn so that all vertical lines remain vertical and of true scale length, all horizontal lines are drawn at an angle of 30 and are of true scale length therefore scale measurements can be taken on the vertical and 30 lines but cannot be taken on any other inclined line.

A similar drawing can be produced using an angle of 45 for all horizontal lines and is called an Axonometric Projection


ISOMETRIC PROJECTION SHOWING SOUTH AND WEST ELEVATIONS OF SMALL GARAGE AND WORKSHOP ILLUSTRATED ON PAGE 23