— 70 — 
Intensities of Work- 
ing Tensile Stress. 
The intensities of working stress for iron in tension aro to be 
taken from tlie following table. 
Member. 
Intensity. 
Plain Chord Bars 
Trussed Chord Bars 
Adjustable Diagonals 
End Main Diagonals 
Other Main Diagonals between 
Plain Hip Verticals. 
Trussed Hip Verticals 
Flanges of Rolled Beams 
Flanges of Built Beams (net soction) 
Lateral .aiul Vibration Rods 
Beam Hangers 
5.00 tons. 
4.00 >, 
4.00 „ 
5.00 ，， 
4.00 & 5.00 
4.0。 „ 
3.00 »» 
5-00 
4.00 jf 
7.5〇 
3.00 ” 
The intensities for intermediate main diagonals are to be inter- 
polated according to position. 
intemitiea of work- For struts composed of two channels with plates or latticing or 
btre^. 111 lacing, or of two channels 'vith an intermediate I beam, or struts 
built of plates aucl angles in a shape resembling that of the cliannel 
strut, the following formulae arc to be used m finding intensities of 
working compressive Btrcss. 
1st. For lateral and intermediate struts. 
v = -で 
3 + w 
and 2nd, for all oilier struts. 
+ 导 
where p is tlie intensity of working compressive stress, U tho length 
of strut divided by least diamotcr of same, 
(19.25 for two fixed ends 
/ == J 19.25 for one fixed end and one hinged end 
( 18.90 for two hinged ends 
15,820 for two fixed ends 
and C= J 3,000 for one fixed end and one hinged end 
(l,900 for two hinged ends 
The working loads for I beam struts arc to be taken from 
Table X. 
