WORKING DRAWINGS HANDBOOK, Fourth Edition

Component, sub-component and assembly drawings

description of what is to be fixed. It is only common
sense to treat such drawings as components rather than
assemblies. Furthermore, the alternative fixing methods
shown and the references back to the general
arrangement drawing for overall sizes, make this one
small detail of universal applicability when shelving of

this nature is required throughout even the

largest project.

Sub-component drawings

These have a limited use and often the

information they convey will be better

shown on the component drawing. There

are instances, however—particularly when

a range of components is being dealt with

of which the sizes and appearance differ

but the basic construction remains

constant—when it may be more

economical to present details of the

construction on a separate drawing.

For example, 3.9shows two doorsets of

different sizes and types. The basic

sections from which they are fabricated are

similar however and that fact has been

acknowledged in this instance by the

production of a sub-component drawing

3.10to which the various components

drawings refer.

The method is really best suited to large

projects, or to those offices which have

produced their own standard ranges of

component details.

The assembly drawing

The juxtaposition of two or more

components constitutes an assembly, and

depending on the complexity of the

arrangement and on how far it may be

thought to be self-evident from other

information contained elsewhere in the set,

it will need to be drawn at an appropriate

3.6 External works components such as this lend themselves to
standardisation. Illustration from Landscape Detailingby Michael
Littlewood, Architectural Press, London, 1984