Working Drawings Handbook
elsewhere in the set at a scale large enough for the
intricacies of its moulding to be described accurately,
then it is a waste of time and a possible source of
confusion if an attempt is made to reproduce the
mouldings on a 1:20 assembly drawing whose real
function is to indicate the frame’s position in relation to
the wall in which it sits.
Some conventional methods of representation which are
generally speaking appropriate for a range of elements
at various scales are given in Appendix 1.
Handing and opening The conventions for describing
the side on which a door is hung are many and varied.
These are sometimes ambiguous, at worst contradictory,
and few areas where precise description is vital suffer so
much in practice from imprecision as this one.Possibly the simplest and most easily remembered
convention is this: that the hand of an opening is the
side on which the hinges may be seen. (BSI’s ‘clockwise
closing’ and ‘anti-clockwise closing’ cut across long
engrained terminology.)4.6 Overlapping smaller sheets allow the appropriate scale to be used for the plan of a large area without recourse to
unwieldy A0 sheets