SOLICITATION NOTICE
C -- RECOVERY--C--Dworshak Dam Waterstop Rehabilitation Study, Orofino, Idaho
- Notice Date
- 9/8/2009
- Notice Type
- Presolicitation
- NAICS
- 541330
— Engineering Services
- Contracting Office
- US Army Engineer District, Walla Walla, 201 N. Third Avenue, Walla Walla, WA 99362-1876
- ZIP Code
- 99362-1876
- Solicitation Number
- W912EF-07-D-0002-0007
- Response Due
- 9/25/2009
- Archive Date
- 11/24/2009
- Point of Contact
- Brian K. Wing, 509-527-7206
- E-Mail Address
-
US Army Engineer District, Walla Walla
(brian.k.wing@usace.army.mil)
- Small Business Set-Aside
- N/A
- Description
- RECOVERY--THIS NOTICE IS PROVIDED FOR INFORMATION PURPOSES ONLY. THIS OPPORTUNITY IS AVAILABLE ONLY TO CONTRACTORS UNDER W912EF-07-D-0002-0007. The purpose of this task order is to have an existing contracted IDIQ A&E Firm (Award #W912EF-07-D-0002) evaluate two waterstop repair methods to reduce water leakage through the monolith joints at Dworshak Dam. The two repair methods to be evaluated are: 1. a flexible membrane applied to the upstream face of the dam over the monolith joint, and 2. a replaceable waterstop formed by swelling solid urethane cylinders installed in a vertical drill hole along the monolith joint. The Walla Walla District has been active in the development of alternative waterstop installations and replacement waterstop installations for many years. Waterstop failures have primarily been the result of 1. inadequate installation during construction, 2. repetitive loadings and movement in high-head navigation lock monoliths, and 3. excessive movement due to foundation compression. The historical methods used for waterstop remedial repair measures include, 1. Drilled hole along joint with filler/sealant, 2. Drilled hole along joint with sleeved filler/sealant, 3. Drilled hole along joint with urethane cylinders, 4. Surface applied membrane over joint on upstream face of dam, 5. Surface applied sealant over joint on upstream face of dam. All of the above mentioned methods have been used for waterstop repairs on dams in the Walla Walla District. While all are effective to a certain degree and under specific conditions none are directly suitable for repairs at Dworshak Dam without modification to the technology. The particular challenge at Dworshak is to design a replaceable waterstop for applications where water is flowing, pressures are high, temperatures are low, and that the installation is at an affordable price. Walla Walla District COE has performed testing and a low head demonstration of an expanding solid urethane cylinder as a replacement waterstop. All testing and applicable information on this work will be available to the AE.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USA/COE/DACA68/W912EF-07-D-0002-0007/listing.html)
- Place of Performance
- Address: US Army Engineer District, Walla Walla 201 N. Third Avenue, Walla Walla WA
- Zip Code: 99362-1876
- Zip Code: 99362-1876
- Record
- SN01944790-W 20090910/090909083136-73aa4e787115143c1cb12ef23e296619 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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