Coordinating

dimension

Other dimensions generally. The method, although

recommended in most BSI literature, tends to be

replaced in practice by the oblique slashes shown below.

Most commonly used method for general dimensioning.

Neat, legible and rapid

Controlling line

Running dimensions. Use should be restricted to

surveys

Small dimensions are best indicated thus

Modular dimension

Leader lines, indicating where notes or descriptions

apply

Centre lines or grid lines.

Drawn in thin line to distinguish them from service runs.

(See Appendix 1)

Dotted line indicates important lines hidden in the

particular plan or section view taken. (Also, on

demolition drawings, work to be removed)

Break line

Section line. The arrows point in the direction of view and

the line joining them indicates the plane of the section

Non-active lines and

symbols

5

APPENDIX

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