Working Drawings Handbook
is—e.g. where a particular window is located in the
building. (This includes general arrangement plans
and elevations, locating all major building elements—
walls, doors, windows, etc.—and indicating where
more detailed information may be found.
Component drawing (coded C) showing whatit is—
e.g. what the window looks like, how big it is, etc.
(This includes the size and appearance of all
components—windows, doors, shutters, fitments,
cupboards, etc.).
Assembly drawing (coded A) showing howit is
incorporated in the building—e.g. how the window
relates to the sill and to the wall in which it is built.
(Demonstrating the manner in which the various
building elements and components fit together.
Storey sections through external walls are an obvious
instance.)
Sub-component drawing (coded SC) showing the
detailed construction of each component—e.g. the
section of the window frame. (A timber window, for
example, would be treated as a component—
coded C—whereas sections of its frame, glazing,
beads, etc. would be the subject of an SC drawing.)
Schedule (coded S), providing an index to the
retrieval of information from other sources, and
tabulating items—e.g. windows, doors, manholes,
etc.—located on other drawings throughout the
building.
Information drawing (coded IN) giving supplementary
information which is relevant, but not part of the
building—e.g. survey drawings, bore hole
analyses, etc.
2.0) Each category is then divided into broad sections
or elements, each of which deals with a different
subject. The codes for these are given in brackets
following the drawing category, as follows:
(1-) Substructure.
(2-) Primary elements
(i.e. walls, floors, roofs, stairs, frames).
(3-) Secondary elements
(i.e. everything filling openings in walls, floors and
roofs; suspended ceilings and balustrades).
(4-) Finishes.
(5-) Services.
(6-) Installations.
(7-) Fixtures
(i.e. sanitary fittings, cupboards, shelving, etc).
(8-) Loose equipment (i.e. fire extinguishers, unfixed
furniture, etc.).
(—) The project in general
(i.e. information of a general nature which cannot
readily be allocated to any of the preceding
elements).3.0) All of these codes will not necessarily be used on
any one project. A list of the elements into which the
present set is divided is given at the end of this guide.
The element will always be recognisable from the
drawing number box however. For example:G(2-)003 is a general arrangement drawing, and deals
with the positioning and referencing of primary
elements. It is the third drawing in that series.C(3-)012 is a component drawing, and is of a secondary
element component, such as a door or a roof
light. It is the twelfth drawing in that series.4.0) One further sub-division is built into the system.
(C3-) indicates that the drawing deals with a secondary
element component. (C32) however indicates that it is a
secondary component in an internal wall, and (C37) that
it is a secondary element in a roof. A complete table
(known as CI/SfB Table I) is given below. Once again all
these sub-divisions will not necessarily appear in this
drawing set. Furthermore you may well find a general
arrangement drawing coded GA(3-) covering all
secondary elements but containing in it references to
component drawings (C31), (C32), C(37), etc. This is so
that component drawings relating to windows, internal