60 -

O Upstream Pud" " . ~ Outlets’
** A Rizon A PEN stock Tunnel
& Wemf Pipes, - A

orawn: .../.42,9....... susm iTTED: ............ A3, so-o-o: . . . . . * * * - - - - TRACEo::15:1.2.8:WHKRE.com MENDED:..... M% 2.o * - - -

checked: (24.42.É3. APPRoved: (2

wevada so PEN.srock Tunnel . . ARizona 30' PEN stock Tunnel

| 30 Da. Tunnel 243'Da Innel,

\ }-High Pressure. Grous holes

Tà i Spaced 20'Maximum
#y Longitudinally-Stagger Radially
# / -

Spaced 20' Maximum . . ---on-o-or

longitudinally-Stagger Radially ove - 7:0; o!' o-High Pressure Grouf Holes

j & A Spaced 20'/Maximum A Longifudina/y-Sagger Radially.

...----Grouf Pipe Connections fo

be embedded in Concrefe or
sef in Grouf Hole drilled in

\ Concreie ałoption of Contractor

TYPical section so-Tunnel Typical section 24.3"Tunnel - Typical section 15:9"Riser o, ,

DEPARTMENT OF THE INTERIOR
BUREAU OF REC LAMATION

-> B OULDER CANYON PROJECT note HOOVER DAN/ All Tunnels and Riser Shaffs will carry PROFILES AND SECTIONS

Pressure Tunnels and Shaffs.