SPECIFICATIONS FOR STEEL HIGHWAY BRIDGES. 31 
In cases of unavoidable eccentricity the members 
affected thereby shall be proportioned and the connection 
details designed to resist the stresses produced. 
The effective area of single angles in tension shall ^^ aril' S^lnsils^a 
assumed as the net area of the connected leg plus 50 per tension. 
cent of the area of the unconnected leg. 
The effective area of a double-angle tension member 
shall be assumed as 80 per cent of the net area of the 
member unless the end details and connections are such 
that the individual angles are held against bending in 
both directions, in which case the full net area may be 
used. When the angles connect to separate gusset 
plates, as in the case oi a double-webbed truss, the gusset 
plates shall be stiffened by diaphragms in the line of the 
connected angles or by tie-plates extending to the ends 
of the angles if they are to be considered as offering such 
resistance to bending that the full net area can be used. 
When the angles are connected back to back on opposite 
sides of a single gusset plate the support may be assumed 
to be sufficient to allow the use of the full net section. 
Lug angles shall not be considered as effective in trans- 
mitting stress. 
Unless otherwise provided all connections shall be 22. strength of 
proportioned to develop not less than the full strength ^^"^^^ ^°^" 
of the members connected. 
No connection, except for lacing bars and handrails, 
shall contain less than three rivets. 
Continuous compression members in riveted struc- 23. spuces. 
tures, such as chords and trestle posts, shall have milled 
ends and full contact bearing at the splices. 
All splices, whether in tension or compression, shall be 
proportioned to develop the full strength of the members 
spliced and no allowance shall be made for milled ends of 
compression members. 
Splices shall be located as close to panel points as pos- 
sible and, in general, shall be on that side of the panel 
point which is subjected to the smaller stress. 
The arrangement of the plates, angles, or other splice 
elements shall be such as to make proper provision for 
the stresses in the component parts of the members 
spliced. 
In all splice plates not in direct contact with the parts 24.J ° ^ ^ ^ ® '^ '^ 
they connect, the number of rivets on each side of the 
joint shall be in excess of the number which would other- 
wise be required for a contact splice to the extent of two 
extra transverse lines for each intervening plate. 
Where indirect splices involve rivets carrying stress 25. Fillers. 
and passing through fillers, the fillers shall be extended 
beyond the splicing material and the extension secured 
by additional rivets sufficient in number to develop the 
section of the filler. 
When the filler is less than 34 inch thick the splicing 
material shall also be extended. 
