2009-10-16_PERMIT FILE - M2009082 ‎(9)‎

• Permit No: M2009082
• IBM Index Class Name: PERMIT FILE
• Doc Date: 10/16/2009
• Doc Name: New 112c Appl.
• From: Lafarge West, Inc.
• To: DRMS
• Media Type: D
• Archive: No

MAGGI ENGIIYEER`ING, INC.
820 South County Road 21
'Berthoud, CO 80813
October 11,, 2009
Mi. Joe Doherty
Divide Constructors,,tne.
549 2°d Street
Berthoud, CO 80513
Subject: Parsons Mine River and °Road:Crossings
Dear Joe???t{tilryr
s,. `7938 W.c
?j?29 a Q?
1 ?.
to
The requirements fb the?Poudre River and WCR:25 road crossi%s" llow;,
River Crossing Bridge
The long span required for the river crossing: will need to be a suspension bridge.
l) Towers will be approximately 40' tall` fabricated from 18" pipe.. The tower columns
will be 13' on center.
2) Tower foundations will be 36" diameter caissons drilledatleast 6' into shale. Thgy
will be topped with a grade beam;
3) Towers should be at least 30' back.from;the'river+ank.
4) Cable anchor blocks will be approximately. 125' from the tower center. They will
require approximately 100 yards of concrete.
5) Suspension cables will be 1 '/ The drop cables witt be I".
6) The conveyor structure will be a 36" truss with a'W mide walkway' on both.sides of
.the truss.
7) The lowest member of the structure over the river should. be'10' above.the; l 00-Year
flood IeveL
S) The river--bank will need to be: rip,-rapped 100' upstream and downstream from the
towers.
9) The structure will require wind>anchors.
--Continued on ?age 2