Engineering Graphic Modelling

3.0

THE DRAWING CODE

SUMMARY

Codes are sets of rules according to which the information on a

graphical model is presented. Coding exists where use is made of:

e.g.

pneumatic symbols, thread notations or where three-dimensional

objects are represented as isometric drawings.

Graphic models are primarily for communication. For the drawing to

be interpreted correctly, the code used in formulating the information

should be known to the recipient of the message i.e. the receiver

should know pneumatic symbols, thread notation and isometric

representation.

It is important that in a given situation the code is chosen correctly,

so that the receiver