414 



STRUCTURAL DRAFTING. 



CHAP. XII. 



Style 1. 



" " 



Style 2. 



T 



Thickness 

 of Bar 



Single Lacing 



O=4OT 



2'- 1" 

 1-10H 

 1- 8 

 1- 6H 

 1- 3 



1- OX 

 ' 10V 



C=5OT 



2-1 



Double Lacing 



C=6OT 



3'- 1H" 

 2- 9K 

 2- 6 ; 

 2- 2K 



1- 3 



0=76 T 



2- 81%. 

 2- 4H 

 1-1 !% 

 1- 6% 



2 Rivet. 



() -j 



u 



Width 



of 



Bar in 

 Inches 



aK 



a . 



Rivet. 



1 



& 





For Rivets. \ 



S" 



f'Rivet 



I- 



at 



I 



oo 



UJ 



Lengtn to be added to Distance C 



For finished length A 



V 



3H" 



3H 



3H 



For ordered length B 



W 



FIG. 23. STANDARDS FOR LACING BARS. AMERICAN BRIDGE COMPANY. 



