Page 85 - Welding of Aluminium and its Alloys

74 The welding of aluminium and its alloys

t 2 t 1
(a)

t 2 t 1

(b)

t 2

(c) t 1

5.5 Throat thickness in a butt weld: (a) full pen butt weld; (b) partial
pen butt weld; (c) T-butt weld.

(a)

t = t 2
1
t 1
t 2
(b)
5.6 Throat thickness in a fillet weld: (a) fillet weld; (b) mitre and
convex fillet weld.

pipe, t 1 in Fig. 5.5. No credit is taken in calculating permissible static design
stress of either a butt or fillet weld for the excess weld metal, i.e. that above
the surface of the parent metal for a butt or outside the isosceles triangle
of a fillet weld as given by (t 2 - t 1).