458 



ERECTION OF STRUCTURAL STEEL. 



CHAP. XIV. 



j Octagonal Steel-' 



turn in handle-^ ?*$&&* Bogs, /j " Diarn- 



//r\ii/> 

 Va 



3 Hole in head 



c ft" J- S" 



or I daor* 



Handle of 

 3sh or hickory. 



CARRYING HOOK 



jt' 



i".. f 



Clevis* 5" ,/** 



( ?i 9} " \^ : cf/3teA 



* K-- |S - > ) -~.fr 



STEEL WEDGE 



OAK WEDGE- 



4 



for Double Nut Falsework 



_3* ff Zj 



4 Bolts, L =6rip +5' \4 



i -i \ for Single Nut Falsework lr~L 



Bolts* L*6rip~ 



y z _^__ : |^ _/__; 



* Square Nuts '' STANDARD FALSEWORK BOLTS Square Head & Hut 

 FIG. 13. TOOLS FOR STEEL ERECTION. AMERICAN BRIDGE COMPANY. 







