I-l 
'££ 3RACE RAFTER CO/W£CT/OS/ 
.--,w 
2-0' 
COLLAR 3£AM 
OES/ 
r/fACt 
CHEC 
U.S. OFFICE OF PUBLIC ROADS AND RURAL ENGINEERING 
ROAO ECONOMICS 
DETAILS 
PORTABLE CONVICT CAMP BUILDING 
SCALE.. if-l'-flT 
HIGHWAY ENGtNEEP 
\^z£L 7 .c^jL & 
ECONOMICS i^£"59 
