Alex Canal-SY060217Post-it' Fax Note 7671
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Phone
Phone
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Feb 17 06 03:42p
02/17/2006 12:04
Message:
John,
972 462 5149
City User
4693740811
972 462 -5149
GWC ENGINEER
gwc engineering
4201 Spring Valley Road, Suite 1120
Dallas, TX. 75
469- 374 0810
Fax: 469 374 0812
E maiE: briars .campbell @gwcengineeri.ng.com
Alex Channel Slope Investigation
Fax Number: 97 4 5149
Fax Number: 4 374 -0811
Total of Pages: 5
Attached drawings show three alternatives for the slope repairs. The first
shows the original gravity wall we discussed in our meeting. The second
shows a soldier pile and lagging alternate which we also discussed in our
meeting. The third shows a modified gravity wall alternate (one drawing
shows the construction phase geometry and the second drawing shows the
final configuration geometry).
In dialogue with ARK Contractors (Steve Bowman and Mark North) about
the first two alternates, in their judgment construction would be
problematic due to the access constraints, using cofferdams to control
water, and handling of materials. It isn't so much a question of whether
either option could be built, but the cost to do it.
They suggested an alternative which I have sketched and attached. In this
alternative, the:
Water level in channel remains unchanged;
Channel would be partially filled with 4" -8" angular gravel as shown;
the top of gravel would be about 2.3 feet below the water level, and the
gravel would extend out approximately 1 the width of the channel;
NOTE; This fax transmittal is intended for the use of the individual or firm to which d has been addFossad end may contain
information that is privileged. cwrfidanNal. and exempt from disclosure under applicable tow. if the rooster of this message a not the
intended' recipient or the employee or *gent mspaveslble far delivering this massage
notified that arty dissemination, distribution. or copying of this fax is H fo intended eclpty or, u are hereby
lnwnat%ataly. Y prohibited. If you rbcervb this fax in error, please /wtl y
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Feb 17 06 03:42p City User
02/17/2006 12:04 4693740811
Gravity wall is 6.5 feet high, 4.75 feet wide at base, (top at 102', bottom
at 95.5').
If the channel can be partially filled with gravel then we can have Reed
Engineering evaluate the slope stabill ty for this alternative and then ARK
can estimate the cost. From an engineering standpoint, we believe that the
gravel fill would not have an adverse effect on the hydraulic performance of
the channel.
If you have any questions or to discuss this please give me a call back at
(469)374-081o.
GWC ENGINEERING
972- 462 -5149
NOTE: This fee transmittal Is Intended for the use of the ir+drlridual or IFnn t which it hes been addressed and may contain
information that Is privileged, oonfldnrre.,l, and exenyN fiOnr disclosure under applicesie law. If the reeoor of this memo, Is nal the
intended recipient or the employee or aQent nesponarbb for delivering
not Met any dissemination, distribution, or c this hib ed. to MO Iceive this lee or, ens hereby
us irmr a iately. copying of this fez is strictly prohibited. yeti receive this lax !n error, please nobly
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02/17/2006 12:04 4693740811
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