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Cuyahoga County Engineer
Fax Transmittal
Bridge
Inspection/Maintenance
To: Bob Hunn
From: Jeffery D. Horvath, P.E.
Bob,
Our original plans
called for paving the invert and caulking the stains with misc.
paned gutter work and RCP. That's how I made the
comparison (listed below). If we were to look at digging
this up to replace, the cost vs. savings would be astronomical.
Thanks,
Jeff
Snow Road Culvert No. 13
Cost Comparison of Culvert Liner Vs. Paving
Invert
| |
Quantity |
Unit Cost |
Contract |
County |
|
503 - Cofferdams, Cribs, Sheeting (contractor) |
Lump |
$20,000 |
$20,000.00 |
|
|
503 - Covverdams (County) |
Lump |
$1,000.00 |
|
$1,000.00 |
|
601 - Rock Channel Protection, Type A |
36 CU YDS |
$46.30 |
$1,667.00 |
$1,667.00 |
|
601 - Rock Channel Protection, Type B |
20 CU YDS |
$38.10 |
$762.00 |
$762.00 |
|
601 - Payed Gutter, Type 1-4 |
25 Lin FT |
$37.20 |
$930.00 |
$930.00 |
|
603 - Field Paving of Existing Pipe, 60" CMP |
300 Lin FT |
$105.00 |
$31,500.00 |
|
|
613 - Low Strength Mortar Backfill, Type 2 (Contr.) |
3 CU YDS |
$64.00 |
$192.00 |
|
|
613 - Low Strength Mortar Backfill, Type 2 (Lining) |
81 CU YDS |
$64.00 |
|
$5,184.00 |
|
614 - Maintenance of Traffic (Contractor) |
Lump |
$8,000.00 |
$8,000.00 |
|
|
614 - Maintenance of Traffic (County) |
Lump |
$1,000.00 |
|
$1,000.00 |
|
624 - Mobilization |
Lump |
$5,000.00 |
$5,000.00 |
|
|
Special - Joint Sealing Existing 60" CMP |
250 Lin Ft |
$9.50 |
$2,375.00 |
|
|
Special - Culvert Renew Pipe Liner |
300 Lin Ft |
$106.00 |
|
$31,800.00 |
| |
|
|
|
|
|
Totals |
|
|
$70,426.00 |
$42,343.00 |
Looks at the cost summary for each option above,
the COST SAVINGS is: $28,083.00
But, if we examine these options further, we see
that if we line the pipe with the CULVERT RENEW pipe, we can
expect to have a usefil life of 75+ years. Whereas, when
the existing pipe is simply paved over the invert and the seams
sealed, we can estimate a life of +/- 25 years. This is
also a cost benefit for the pipe lining option in that we
rehabilitate the pipe to a near new condition.
Therefore, looking at the future cost benefit, we
can estimate our savings as over the next 50 years by an
economic analysis. If we estimate the need for another
rehabilitation in 25 years, we can find the present worth of
those monies spent. Then, we obtain the Total Cost of
Benefit of: $174,000.00 |
