WEB FRAMES 443

been omitted to obtain clear holds. Ships may be built throughout on
the web frame principle in order to get a clear hold for stowage of cargo
by doing away with a deck and compensating for the loss of strength
by means of web frames spaced about six frame spaces apart. The
web frames when associated with plate stringers form a succession of
strong transverse girders, the ordinary framing forming the necessary
local stiffening between them.

Figure 24 (i), (ii) and (in) represent three views of a web frame
of earlier construction associated with a deep stringer; the lettering
indicates the same part in each drawing, (i) is the web frame looked
at from aft; (ii) is the web frame crossed by the deep stringer plate as
viewed from inside the ship and looking transversely; (iii) is a plan
looking downwards. The web plate is connected to the shell plating by
frame angle bar c in (i) and (iii), and stiffened on its inner edge by
double angles 6 (i) and (ii).

(i) (ii) (iii)
Fig 24 —Web Frame and Stringer.
The stringer plate d (ii) and (iii) is the same depth as the web frame
plates between which it is fitted intercostally, the ends of the stringer plate
being riveted to the web of the frame by short angles Ji (i) and (iii) and
the edge of the stringer against the shell plating is united thereto by
short chock angles g (i) and (iii), fitted between the ordinary frames,
the plate being notched to fit round the frames as in (iii).
The inner edge of the stringer is stiffened by double angles e (ii)
and (iii), and the junction of the web frame and stringer plate is strength-
ened by means of a diamond plate k (i), (ii) and (iii), which is riveted
to the stiffening angles on the inner edges of the web frame and stringer
plate. See also figure 5, page 600.
A fore-and-aft angle / (i) and (iii), on the under side of the stringer,
gives a further rivet connection to the reversed frames.
The depth of the web frame depends on the depth of the .vessel,
and in cases where the stringers are deep they are supported between
the web frames by brackets which may be fitted at alternate frames*