Page 30 - Quick Guide to Welding and Weld Inspection by S.E. Hughes, Clifford Matthews

Abbreviations, Terminology and Welding Symbols

Figure 1.12 Specifics of BSEN 22553

to specify the ‘other side’. This makes good sense because
engineering drawings represent what you cannot see as a
dashed line and obviously you cannot see the ‘other side’
of a joint. It helps reduce the risk of drawings being read
wrongly and welds being incorrectly placed on the wrong
side of a joint.
. The dashed line specifying ‘other side’ can be omitted if a
double-sided weld is symmetrical about the reference line.
. Fillets leg sizes must be prefaced with the letter z.
. Nominal fillet throats are preceded by the letter a.
. Effective throat thickness for deep penetration fillet welds
and partial penetration butt welds is preceded by the letter
s.
AWS A2.4 specifics (Fig. 1.13)
. AWS A2.4 may use more than one reference line from the
arrow line to indicate the sequence of welding.
. Weld dimensions may be given as fractions or decimals
and in metric or imperial units.
. Welding processes are indicated using standard AWS
abbreviations.
. Single plate preparations are indicated by a directional

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