Building Construction Handbook, Eighth Edition

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

OFSMALLGARAGE AND WORKSHOP ILLUSTRATED ON PAGE 23

Communicating Information---Isometric Projections