— 22C — 
Guai.tl raus require no marks. 
Beam Jian.^ers to be mmihered so as to correspond to the panel points to which 
tliey belong. 
Rollers need ho marks. 
Fillers to be marked the same as the pins to which they belong. 
Turn buckles and sleeve nuts, being attached fco the rods before shipment, in- 
quire no marks. 
Bracing frames for stringers and girders to l>e numbered so as to correspond 
with the panel points and tlie upper sides to be marked U p. 
The frames may be considered as dividing plate girder spans into panels. 
Diagonal bracing angles for plato girder spans to be marked U or L (upper oi* 
lower) and to be numbered to correspond witli the panels into which they may 
supposed to divide the span. 
Washers need no marks : tliey slioukl be boxed, or strung on bolts, befoi* c 
shipment. 
Rivets need no marks, but should be boxed. 
Pilot nuts need no marks, as there are so few of them required. 
Lock nuts should be markoil D v D 2 , &c., Ui, U 2 , &c., V.,, V. 2 , &c., L. 1, L* 2 
II. 1， II. 2, &c. aud P, D coiTesponcliug to web diagonal, U to upper lateral 
l od, V I to Tibrfttiou rod, L, to lower lfiteral rod, IT. to befim hanger and P 切 
portal rod . 
エ li addition to these marks, there should be others for those members which 糾〇 
to be riveted together in the field, and which are assembled iu the shop when the 
l-ivet holes previously punebod are reamed. These marks should be punched 
tlie iron with a steel point, and should consist of one, two, three, or four dots up。 11 ， 
each of tlie pieces so aHRombled, in orilev that no piece during erection will be p nt 
iiito the wrong plac^. 
