The Saint Paul globe. (St. Paul, Minn.) 1896-1905, 1901-08-30
Sec. I42. RivetInE of Structural
Steel and Wrought Iron Work

The distance from the center of a rivet
hole to the edge of the material shall not
be less than:
9s-inch for 1Z-inch rivets
B-inch for 5s-inch rivets
1B-inch for &-inch riVets
12s-inch for B-inch rivets.
1b-inch for 1-inch riVets.
wherever possible, however, the dis
lance shall be equal to two diameters.
All rivetS, wherever practicable, shall be
machine driven. The rivets in connec.
lions shall be prOportiOned and placed
to suit the stresses. The pitch of rivcts
shall never be less than three diameters
Of the rivets, nor more than six inches.
See. lab. Boiling of Structural
Steel
Where riveting Is not made mandatory,
connections may be effected by bolts.
Turned bolts in reamed holes, shall be
deemed a substitute for field rivets.
Sec. IA. Steel and wrought Iron
TFusses-
Trusses shall be of such design that the
stresses of each member can be calculat-
ed. All stresses shall be held rigtdly IN
position by efficient systems of lateral
and sway bracing. Any member of a
truss subjected to transverse stress, in
addition to direct tension or compression
shall have the stresses causing such
strain added to the direct stresses COM
ing on the member and the total stresses
IIuS formed snail not exceed the working
stresses provided for in this Code.
Sec. I45. Riveted Steel and Wrought
Iron Trusses-
For tension members, the actual net
area only, after deducting rivet holes
one-eighth Of an inch larger than the
rivets, shall be considered as resisting
the stress. If tension members are made
of angle irons, riYeted through one fiange
only, only that fiange shall be considered
in proportioning areas. Rivets to be pro-
portioned, as prescribed in Sec. Sc Of this
Code. If the axes of the two adjoining web
members do not tntersect within the lines
of the chords. sufficient area shall be
added to the chord to take up the bend
ing strains No bolts shall be used in
cepting when riveting is impracticable
and then the holes shall be drilled or
reamed.
Sec. I46. Steel and Iron Pin Con-
nected Trusses-
The bending stresses on pins shall be
limited to 2OOc0 pounds for steel and 15-
members in pin-cOnnected trusses shall
be proportional, using Is per cent Of the
permissible working stress for columns.
The heads of all eye-bars shall be made
by upsetting or forging. No weld VIII
be allowed in the body Of the bar Steel
eye-bars shall be annealed, bars shall De
straight DeIOre DOr1nS. All plnhOIeS shall
be bored through, and at right angles to
the axis of the members; they must fit
the pins within 1-32 of an inch. The dis
lance Of pin holes, from center to centor,
for corresponding members shall be alike.
so that when piled upon one another,
pins will pass through both ends without
forcing. Eye and screw ends shall be so
proportional, that upon test to destruc-
ton, fracture will take place in the
body Of member. All pins shall be ac-
curately turned. Pin plates shall be pro-
vided whenever necessary TO reduce the
stresses on pins, to the working stresses
prescribed in this Code.
Sec. I47. Iron and other Metal
Fronts to BE Filled In
All cast iron and metal fronts shall be
backed up or filed in, with, masonry Of
the thickness provided for in this Code.
Sec. I4s. Painting of Structural
Metal Work.
All structural metal work shall be
cleaned Of all scale, dirt and rust, and be