ST9302-CS 980311SANDY LAKE - FROM DENTON TAP TO MACARTHUR BLVD
CATEGORY NUMBER OF L.F, CONST.
LOWER/RELO $
1. PAVING 6 3,300 1,131,900
CONFLICT
2. DRAINAGE .~ "~ 150 93,000
CONFLICT
SHUTDOWN
PERIOD - ])AYS
14
8
3. STREET LIGHT 17 595' 368,900
FOUNDATION
CONFLICT
The existing design requires
paving, drainage and streetlight foundation conflicts.
lowering the entire limit of 10, 160LF at a cost of $2.6 M.
The ori~nal 7 section lowerings of 5,370 LF, based on the project report dated 7/21/94
account for paving and drainage conflict, however requiring a minimum cover of 8 FT.
the standard air valve design.
NOTES AND ASSUMPTIONS:
PAVING:
1.. The 6 section lowerings are at the following station (Paving Conflicts):
due to
66 ooo
1.1 8+75 to 12+25 -- 350LF
20+50 - New air valve installation to replace the existing AN
1.2 29+25 to 33+50 = 425LF
43+00 - New air valve Installation to replace the existing A/V
1.3 68+50 to 74+40 = 590LF
1.4 79+25 to 86+50 = 725LF
1.5 95+00 to 100+00 = 500LF
1.6 100+90 to 108+00 = 710LF
Total = 3,300 LF
~ $343/LF, consisting of 17 bid items based on current prices
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@
2. The shutdown period estimate was based on factfinding conversations with Johnson
Bar Contractors, in-house design and construction personnel and a meeting with Distn"o~
Division. Reference attached memo to M. Riehman
3. New air valves will be installed at sta. 10+50, 20+50 (re-install), 33+00, 43+00(re
and 714-00. The new A/V system each will cost $16,000. incl. 2 manholes..
4'. A new configuration for the Air Valve system will be utilized to minlmiTe cover reqt
to only 3.8 Ft. This Air Valve design was first installed in the Denton/Rossford project
ex. 66" main in 1997.
Brothers,
ion
irement
on the
5. Prior to tie-in, a total of 200,000 gal. dewatering will be accomplished wi~ the in~ation
0fblow-offvalves at low points. Note: Do not use greater than 1300 GPM diseharge ~or the
pump.. ' ~
6. Two existing air valves not included in the lowerings will 'be re-installed using the ne~v A/V
design.
DRAINAGE:
1. The 3 drainage conflicts are at station:
03, 21 RCP (1Ft. dire, et conflict) - Redesign nmy be possible~,'~' .
19, 2I"RCP (4"clearance) - Redesignmaybeposs~ble~'-cx~.,~e-'
+40, 66"RCP (4FT. Direct conflict).-redesignLowering may be required or need major
1 +17 - Direct conflict with 27"RCP - Lowering no. 6 was extended by 110 LF
accommodate this conflict and one strcc4
foundation conflict
-31 000
Estimated Cost: $ , /lowering~consisting of a total of 150LF pipe~ 300/LF and 6
closures ~ $$,000 each
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STREET LIGHT FOUNDATIONS:
The proposed street light 24" drilled shafts approximately 8 Ft. deep are in conflict at 24
different locations. However, 7 of these conflicts will be cleared in conjunction with the
lowerings in item #1, leaving 17 conflicts to be cleared at the following stations:
1. 7+22---
' '~-.14+92-
~ 4. 24+89
5. 27+94
6, 36+72
7. 38+20
8. 39+76
~ ~ 42+75
'~M0. 49+18
12. 56+11
14. 60+80 ---~
15. 64+20~>
16. 67+60 --
17. 94+64 --'7
Estimated Cost:
GENERAL NOTES:
$620/LF
( 35LF per relocation, total 595 LF)
2OOo
1. Special Provisions will be included to protect the existing main from heavy equipment
during grading operations. Minimum 2.0t~. cover will be maintained to not allow total e:
capacity to exceed 6600g/ft. Sheepsfoot rollers will not be permitted; skid boar& will b
installed to distribme the load, etc.
2. Design Services estimates approximately 4 weeks to complete in-house design for the 6{
lowerings.
Jun Battad - 3/09/98
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