| Hillsdale Powell Utility DistrictBeaver Creek WWTPKnoxville, TNVSL Corporation | April1988(Reviewed) | 4 | Review and modifications to the design of oval shaped aeration basin, designed by others, prior to construction. Horizontal and vertical post-tensioned wall, interior dividing walls, post-tensioned semi-structural floor and open top | $722,000 | 18.1 |
| Borough of DauphinDauphin County, OHVSL Corporation | July1991(Reviewed) | 0.55 | Review and modification to the design of a four-cell rectangular sequencing batch reactor tank, horizontally and vertically post-tensioned walls; partially buried; post-tensioned slab-on-grade floor and open top. | $300,000 | 54.5 |
| City of Columbus, OHHap Cremean WPTBBS Corporation | November1992 (B) | 6@8.0 | Rectangular prestressed concrete clearwells, Horizontally and vertically post-tensioned two-way flat plate mat foundations. designed for six feet of water uplift. Post-tensioned two-way flat plate roofs. Buried, includes excavation and backfill. Corners are rounded to a 32 foot inside radius to avoid cracking due to high negative moments combined with axial tension and to eliminate roof cracking. | $10,590,000 | 24.1 |
| Mountaire Farms of DelMarVaSelbyville, Delaware | August1993(Investigation) | 0.5 | Investigation of a collapsed prestressed rectangular concrete wastewater treatment tank originally designed by others. | Not Applicable | |
| City of Cleveland, OHCrown Water TankPolytech, Inc | May1994(Review) | 20 | Peer review and consultations regarding post-tensioned rectangular water tank then in the design stage. Members of the design team for this project also included CH2M Hill and Sverdrup Facilities, Inc. | Not Applicable | |
| Gulf Coast Waste Disposal Auth.Bayport WWTPPasadena, TexasDywidag-Systems International, USA, Inc | October1995 (B)Design-Build | 13.75 | Rectangular prestressed concrete aeration basins. Horizontally and vertically post-tensioned walls, post-tensioned membrane floor and integral wall footing/foundation. The post-tensioned concrete structure is the primary containment for industrial wastes generated by petroleum refineries tributary to the plant. A heavy PVC membrane below the floor slab provides the secondary containment. Our design/build package was about $1,700,000 below that of our competition's. | $2,576,000Not including secondary containment | 18.7 |
| Indianapolis Water Co.South Well Field ClearwellHNTB, Structural Engr. | February1996(Review) | 4 | Review and modifications to the design and details of the rectangular post-tensioned concrete water tank with rounded comers. Horizontally and vertically post-tensioned walls with post-tensioned two way flat plate floor and roof. The owner hired us to assist HNTB in using our design concept developed for the Hap Cremean project(see November 1992). The owner estimates that this design saved them about $900,000 over the typical nonprestressed water tank design they used to use. | Not applicable | |
| Grain Processing CorporationWashington, IndianaBowen Engineering Corporation, G. C. | January1998 (B)Design-Build | 2 @ 1.72 @ 1.0I @ 0.2 | Value engineering redesign of conventionally reinforced conc. waste treatment tanks originally designed by others. The two 1.0 MG tanks were originally designed to be circular. The others were originally designed as rectangular. All were converted to circular prestressed concrete tanks with horizontally and vertically post-tensioned walls and two-way post-tensioned membrane floors. Price includes walkways on tops of the walls and launders as applicable, and excavation and backfill, but not piping and appurtenances or redesign fees. | $1,150,000(The owner saved $315,000as a result of our design.) | 20.9 |
| City of Washington, IndianaWashington Water Treatment PlantBowen Engineering Corporation, G. C. | April1998 (B)Design-Build | 2 @0.4 | Value engineering redesign of conventionally reinforced concrete. water treatment tanks originally designed by others. The tanks were originally designed as rectangular with precast concrete roof members. They were converted to circular conventionally reinforced concrete tanks with a cast-in-place flat-plate roof. | $233,116(The owner saved $15,000as a result of our redesign.) | 29.1 |
| The Metropolitan Sewer District of Greater Cincinnati (MSD)Muddy Cr. Dr. & Westbourn Rd. Combined Sewer Overflow BasinBBS Corporation, Civil Engineer | June1998 (B) | 4.5 | Rectangular prestressed concrete combined sewer overflow detention facility. Horizontally and vertically post-tensioned walls. Post-tensioned two-way flat plate structural floor with rock anchors designed for 30 feet of water pressure acting upwards on the underside of the floor. Post-tensioned two-way flat-plate concrete roof with about three feet of backfill. Our post-tensioned structural design will be compared to conventionally reinforced designs by others as a possible prototype for future projects for MSD. | $4,791,400 | 106.5 |
| The Metropolitan Sewer District of Greater CincinnatiCovedale Sidon Water Detention FacilityBBS Corporation, Civil Engineer | March2000 (B) | 1.85 | Rectangular prestressed concrete storm water detention facility. Horizontally and vertically post-tensioned walls. Post-tensioned two-way flat plate structural floor designed for six feet of water uplift. Post-tensioned two-way flat plate roof with backfill ranging from 2 to 6 feet in depth. Extremely tight site for construction. | $2,686,000 | 145.2 |
| Indianapolis Water CompanyWhite River Water Treatment PlantBlack & Veatch, Civil Engineer | May2000 (N)Design-Build | 7 | Horizontally and vertically Post-Tensioned walls. Post-Tensioned two-way flat plate mat foundation, designed for four feet of water uplift. Post-Tensioned two-way flat plate roof. Buried. Includes excavation and backfill. High cost per gallon is partially due to low (14 ft.) wall height. | $3,234,522 | 46.2 |
| Changchun Waste Disposal AuthorityChangchun WWTP,People's Republic of ChinaNortheast Public Works Design and Research Institute | July2000 (B)Value Engineering | 16 | Rectangular prestressed concrete aeration basin. Horizontally and vertically post-tensioned walls, post-tensioned membrane floor and integral wall footings/foundation. . | $1,927,000 | 12 |
| Indianapolis Water CompanyWhite River North Water Treatment PlantBlack & Veatch, Civil Engineer | February2001 (N)Design- Build | 3.1 | Rectangular prestressed concrete clearwell. Horizontally and vertically post-tensioned wall, post-tensioned two-way flat plate mat foundation, designed for six feet of water uplift. Post-Tensioned two-way flat plate roof. Buried, includes excavation and backfill. Corners are rounded to a 40 foot inside radius to avoid wall and roof cracking. The cost is somewhat high due, in part, to the low wall height of this tank (12 ft.). | $1.922.000 | 62 |
| Harbin Waste Disposal Auth.Harbin WWTP,People's Republic of ChinaNortheast Public Works Design and Research Institute | July2001 (B)Value Engineering | 2@11.25 | Rectangular prestressed concrete aeration basins. Horizontally and vertically post-tensioned walls. Post-tensioned structural floors with tension piers (included in price quoted) and integral wall footings/foundations. | $2,409,600 | 21.4 |
| Benxi Municipal Auth.City of BenxiPeople's Republic of ChinaNortheast Public Works Design and Research Institute | February2002 (B) | 2.9 | Rectangular prestressed concrete potable water tank with rounded corners. Horizontally and vertically post-tensioned walls, post-tensioned membrane floor with integral wall and column footings. As with all tanks designed for China to date, this one has all unbonded tendons, in the floor, walls and roof. Buried with 2 ft. cover over the roof. | $289,100 | 10 |
| Yingkou Waste Disposal Auth.Yingkou WWTPPeople's Republic of ChinaNortheast Public Works Design and Research Institute | February2002 (B) | 8.8 | A rectangular prestressed concrete aeration basin. Horizontally and vertically post-tensioned walls, post-tensioned membrane floor with integral wall footings/foundations. | $624,000 | 7.1 |
| Panjin Waste Disposal Auth.Panjin WWTPPeople's Republic of ChinaNortheast Public Works Design and Research Institute | March2002 (B) | 8.8 | A rectangular prestressed concrete aeration basin. Horizontally and vertically post-tensioned walls, post-tensioned structural floor with tension piers and integral wall footings/foundations. | $624,000 | 7.1 |
| Jinzhou Waste Disposal Auth.Jinzhou WWTPPeople's Republic of ChinaNortheast Public Works Design and Research Institute | March2002 (B) | 8.8 | A rectangular prestressed concrete aeration basin. Horizontally and vertically post-tensioned walls, post-tensioned structural floor with tension piers and integral wall footings/foundations. | $500,000 | 5.7 |
| Dalian Municipal Auth.City of DalianPeople's Republic of ChinaNortheast Public Works Design and Research Institute | May2002 (B) | 4.5and2.9 | Two rectangular prestressed concrete potable water tanks with rounded comers. Horizontally and vertically post-tensioned walls, post-tensioned membrane floor with integral walls and column footings. Unbonded tendons in the floors, walls and roofs. Buried with 2 ft. cover over the roof | $557,000 and $430,000 | 12.4and14.8 |
| Huludao Waste Disposal Auth.Huludao WWTPPeople's Republic of ChinaNortheast Public Works Design and Research Institute | September2002 (B) | 2@6.6 | Two rectangular prestressed concrete SBR basins. Horizontally and vertically post-tensioned walls, post-tensioned structural floors with tension piers and integral wall footings/foundations | $468,000 | 7.1 |
| Jilin Municipal Auth.City of JilinPeople's Republic of ChinaNortheast Public Works Design and Research Institute | September2002 (B) | 5.7 | Rectangular prestressed concrete potable water tank with rounded corners. Horizontally and vertically post-tensioned walls, post-tensioned membrane floor with integral wall and column footings. Unbonded tendons in the floor, walls and roof. Buried with 2 ft. cover over the roof. Since this tank is located in a public square, architectural features are planned for the roof. | $595,000 | 10.4 |
| Black Hawk - Central City Sanitation Dist.WW Treatment Fac.Black Hawk, COGreeley and Hansen LLC | Spring2003 (B) | 2 | A rectangular prestressed concrete aeration basin. Horizontally and vertically post-tensioned walls, post-tensioned floors, open tops. | Unknown | Bid as part of WWTP |
| Harbin Municipal Auth.City of HarbinPeople's Republic of ChinaNortheast Public Works Design and Research Institute | Spring2003 (B) | 12@15.42@12.4 expectedin PhaseII, 2006 | Two rectangular prestressed concrete potable water tanks with rounded corners. Horizontally and vertically post-tensioned walls, post-tensioned membrane floors with integral wall and column footings. Unbonded tendons, in the floors, walls and roofs. Buried with 2 ft. cover over the roofs. | In design stage | |
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