|
Owner
Location Client (If Not Owner) |
Date Bid (B)
Completed (C) or Negotiated (N) |
Size
in MG |
Remarks
|
Cost in
Dollars |
Cost Cents/Gallon
|
|
City of Littleton, CO
|
1962
(Investigation) |
2 @
5.0 |
Investigation of precast wire-wrapped tanks, designed by others, which collapsed during the horizontal prestressing operation.
|
Not applicable
|
|
|
City of Arvada, CO
Hackberry Hill, Arvada, CO |
1964 (C)
|
10.0
|
Wire-wrapped horizontal post-tensioning; buried, includes excavation and backfill; post-tensioned roof with tennis courts.
|
$343,300
|
3.4
|
|
City of Idaho Springs, CO
Wright-McLaughlin Engineers |
1970 (C)
|
0.72
|
Wire-wrapped with steel diaphragm; partially buried, includes excavation and backfill. Dome roof.
|
$60,500
|
8.4
|
|
City of Salida, CO
Wright-McLaughlin Engineers |
1970 (C)
|
1.0
|
Wire-wrapped with steel diaphragm; not buried. Dome roof.
|
$100,000
|
10.0
|
|
Eastman Kodak Company
Windsor, CO |
1970 (C)
|
3.0
|
Wire-wrapped with steel diaphragm; vertical post-tensioned; not buried; includes $50,000 architectural precast concrete; post-tensioned two-way flat-plate roof.
|
$279,000
|
9.3
|
|
City of Sacramento, CA
|
1972 (C)
(Rehabilitation) |
5 @
1.0 |
Horizontal post-tensioned bar tendon repair of wire wrapped digesters originally designed by others.
|
Not applicable
|
|
|
Tamarron Water District
Durango, CO Wright-McLaughlin Engineers |
1974 (C)
|
1.0
|
Wire-wrapped shotcrete with steel diaphragm; won in a alternate bidding competition with tendons and strand wrapped; buried, includes excavation and backfill.
|
$146,000
|
14.6
|
|
City of Spokane, WA
Atlas Prestressing |
1976 (C)
Design-Build |
6 @
2.6 |
Horizontal and vertical post-tensioned with tendons; part buried; open top; secondary clarifiers.
|
See summary below
|
|
|
City of Spokane, WA
Atlas Prestressing |
1976 (C)
Design-Build |
3 @ 2.4
|
Horizontal and vertical post-tensioned, with tendons; part buried; dome roof; anaerobic digesters.
|
See summary below
|
|
|
City of Spokane, WA
Atlas Prestressing |
1976 (C)
Design-Build |
3 @
0.3 |
Horizontal and vertical post-tensioned with tendons; part buried; open top; gravity thickeners.
|
See summary below |
|
| Spokane Tank Project Summary |
|
The tendon design for the 12 Spokane tanks noted above, saved $1,800,000 for the owner compared to strand-wrapped alternates designed by others. The solitary $4,000,000 bid received in the strand-wrapped tanks had been declared invalid by the EPA (who was partially funding the project) because of the lack of fair competition. The contractor then invited nationwide proposals from tank designers and prestressing firms. The tendon tank design by our firm won. See the brief article reprinted from Engineering News Record on the next page about this savings. |
$2,200,000
Total for walls only |
9.3
Avg. |
|
| Clackamas Water District Clackamas, OR Fenner, Barnhisel & Morris |
1976 (Rehabilitation) |
10.0
|
Investigation and rehabilitation of distressed strand wrapped tank originally designed by others. |
Not applicable
|
|
| City of Loveland, CO M & 1, Inc. Consulting Engineers |
1977 (C) (Rehabilitation) |
3.0
|
Horizontal post-tensioned tendon repair of a distressed wire-wrapped tank originally designed by others. |
Not applicable
|
|
| Vail/Lions Ridge Water Districts Vail, CO Wright-McLaughlin Engineers |
November 1980 (Reviewed) |
1.0
|
Structural review and modifications to the design of a wire-wrapped precast tank with steel diaphragm originally designed by others. |
Not applicable
|
|
| City of Rockaway, OR | September 1983 (Rehabilitation) |
1.25
|
Investigation and rehabilitation of a distressed wire-wrapped shotcrete tank with steel diaphragm originally designed by others. |
Not applicable
|
|
| City of Salida, CO McLaughlin Water Engineers, Ltd. |
August 1990 (Rehabilitation) |
1.0
|
Horizontal post-tensioned tendon repair of a distressed wire-wrapped tank originally designed by others. |
Not applicable
|
|
| City of Beaverton, OR Cooper Mtn. Water Tank OBEC Consulting Engineers |
August 1994 (Review) |
5.5
|
Review and modifications to the performance specifications for a circular prestressed concrete water tank. These performance specifications were designed to allow strand-wrapped and circumferential tendon alternate wall designs to compete on an equal basis. |
Not applicable
|
|
| Montgomery County Water Dept. Dayton, OH |
November 1994 (Investigation) |
3.0
|
Investigation and report on the structural condition and life expectancy of a wire-wrapped circular prestressed concrete water tank originally designed by others. This tank was constructed in 1956 and was showing signs of deterioration. |
Not applicable
|
|
| City of Beaverton, OR Cooper Mtn. Water Tank Arthur M. James Engineers, Inc. |
December 1994 (Review) |
5.5
|
Seismic analysis and modifications to the seismic design of a strand-wrapped circular prestressed concrete water tank. The performance specifications were designed to allow strand-wrapped and circumferential tendon alternate wall designs to compete on an equal basis. The strand-wrapped alternate was successful. |
Not available
|
|
| Tamarron Water District Durango, CO McLaughlin Water Engineers, Ltd. |
August 1996 (N) (Rehabilitation) |
1.0
|
Investigation and rehabilitation of distressed wire-wrapped shotcrete covercoat on a tank with a steel diaphragm. This tank was originally designed by us in 1974. |
Not applicable
|
|
| Richmond Sanitary District Richmond, Indiana HNTB Engineers |
September 2000 (B) |
2 @
1. 5 |
Horizontal and vertical post-tensioned precast wall panels. Replacement of distressed wire-wrapped digester tanks originally designed by others and built in 1950. The conventionally Reinforced floor was reused, and the floating dome roofs were redesigned by others. Price includes supply and erection of the wall panels and a CIM coating but not modifications to the wall foundations to receive the new wall panels or the new domes. |
$604,289
|
20.1
|