SPECIFICATIONS FOE STEEL HIGHWAY BRIDGES. 41 
Splices in flange members shall not be used except by ^J?^;^^ i a n g e 
special permission of the engineer. Two members shall 
not be spliced at the same cross section and, if practicable, 
splices shall be located at points where there is an excess 
of section. The net section of the splice shall exceed by 
. 10 per cent the net section of the member spliced. Flange 
±S angle splices shall consist of two angles, one on each side. 
Splice angles shall be fitted to secure close contact with 
the material spliced. 
Web plates shall be symmetrically spliced by plates 7o. web splices. 
on each side. The splice shall be equal in strength to 
the web in both shear and moment. There shall be at 
least two rows of rivets on each side of the joint. 
Plate girders shall have stiffener angles over end ^i. End stiff- 
bearings, the outstanding legs of which shall be as wide 
as the flange angles will allow and shall fit tightly against 
them. These end stiff en ers shall be proportioned for 
bearing on the outstanding legs of the flange angles, no 
allowance being made for the legs fitted to the fillets of 
the flange angles. End stiffeners shall be arranged to 
transmit the total end reaction and to distribute it over 
the bearings. They shall not be crimped and the con- 
nection to the web shall contain a sufficient number of 
rivets to transmit the entire reaction. 
Intermediate stiffener angles shall be riveted in pairs J2. inter medi 
to the web of the girder. The outstanding leg of each ^ ^ ^ ^ ^^^^^' 
angle shall have a width of not more than 16 times its 
thickness and not less than 2 inches plus one-thirtieth 
of the depth of the girder. 
Intermediate stiffeners shall be spaced at intervals not 
exceeding : 
(a) 6 feet; 
(b) The depth of the web; 
(c) The distance given by the formula, 
where cZ = distance between rivet lines of stiffeners, in 
inches. 
^ = thickness of web, in inches. 
^ = web shear, in pounds per square inch, at the 
point considered. 
When the depth of the web between the flange angles 
or side plates is less than 60 times the web thicliness, 
^ intermediate stiffeners may be omitted. 
Intermediate stiffener angles shall be placed at points 
of concentrated loading and shall be designed to transmit 
the reactions to the girder web. Such stiffeners shall 
not be crimped. 
Other intermediate stiffeners may be crimped. 
The upper comers of through plate girders, where ex- J^. Ends of 
posed, shall be neatly rounded to a radius consistent* ^^^^ e^rcers. 
with the size of the flange angles and the vertical height 
