SPECIAL NOTICE
Y -- Herbert Hoover Dike Industry Day
- Notice Date
- 3/16/2016
- Notice Type
- Special Notice
- NAICS
- 237990
— Other Heavy and Civil Engineering Construction
- Contracting Office
- Department of the Army, U.S. Army Corps of Engineers, USACE District, Jacksonville, P.O. Box 4970, Jacksonville, Florida, 32232-0019, United States
- ZIP Code
- 32232-0019
- Solicitation Number
- W912EP-16-HHD-INDUSTRYDAY
- Archive Date
- 4/29/2016
- Point of Contact
- Tedra N. Thompson, Phone: 9042322016, John Vohlken, Phone: 9042321884
- E-Mail Address
-
tedra.n.thompson@usace.army.mil, john.d.vohlken@usace.army.mil
(tedra.n.thompson@usace.army.mil, john.d.vohlken@usace.army.mil)
- Small Business Set-Aside
- N/A
- Description
- THIS IS AN ANNOUNCEMENT FOR AN UPCOMING INDUSTRY DAY ONLY. The Jacksonville District Corps of Engineers will hold an Industry Day starting at 9:00 AM on April 14th 2016 at the Embassy Suites in Palm Beach Gardens, 4350 PGA Boulevard, Palm Beach Gardens, Florida 33410. We will make a short presentation describing the Herbert Hoover Dike Project as a whole as well as specific upcoming projects and technical requirements. Additionally, a workshop on contractor construction submittals will be given along with match making opportunities. Seating is limited and parties will be required to register. To register: Submit an e-mail to Tedra Thompson by April 8, 2016, Tedra.N.Thompson@usace.army.mil identifying the name of the firm, the name and title of those individuals participating. Project Descriptions: Herbert Hoover Dike Structure Replacements S-292 (IP1) and S-290 (IP2) The work includes in-place abandonment and removal of the existing Herbert Hoover Dike Culverts IP-2 and IP-1, respectively, and the construction of new water control structures S-290 and S-292 at the respective adjacent or existing locations. The demolition and reconstruction efforts will require the installation of steel sheet pile cofferdams with earthen plugs on the lakeside and an earthen cofferdam on the landside of the culvert in order to dewater the construction site. The structures will include cast-in-place reinforced concrete foundations, headwalls, and box culverts. Combination flap/slide gates will be installed at the lakeside headwall of each structure and dual leaf gates on the landside headwall of S-290. S-290 will consist of two (2) 6-foot by 6-foot culverts with approximate barrel lengths of 100 feet. S-292 will consist of one (1) 5-foot by 5-foot culvert with approximate barrel length of 84 feet. At the completion of the embankment reconstruction at each structure, the crest elevation will be 30.5 feet NAVD88. Riprap will be installed along the lakeside embankment face, and a control building will be installed on the lakeside work platform at each structure. Work also includes operation of the by-pass structure, grassing and turbidity monitoring. Herbert Hoover Dike Structure Replacements S-291 (IP3) The work includes in-place abandonment of the existing Herbert Hoover Dike Culvert IP-3 and the construction of new water control structure S-291 at the adjacent location. The demolition and reconstruction efforts will require the installation of steel sheet pile cofferdams with earthen plugs on the lakeside and an earthen cofferdam on the landside of the culvert in order to dewater the construction site. The structure will include cast-in-place reinforced concrete foundations, headwalls, and box culverts. Combination flap/slide gates will be installed at the lakeside headwall and dual leaf gates on the landside headwall of the structure. S-291 will consist of two (2) 7-foot by 7-foot culverts with approximate barrel lengths of 84 feet. At the completion of the embankment reconstruction at the structure, the crest elevation will be 30.5 feet NAVD88. Riprap will be installed along the lakeside embankment face, and a control building will be installed on the lakeside work platform at each structure. Work also includes operation of the by-pass structure, grassing and turbidity monitoring. Herbert Hoover Dike Reach 1 Cutoff Wall Gap Closure The Herbert Hoover Dike Cutoff Wall Gap Closure project is comprised of closing the gaps at existing structures S-308, S-352, S-351,S-2 and the Torry Island Bridge. The closure of the gaps is consistent with the 2000 MRR and the ongoing Dam Safety Modification Study. It is anticipated that conventional panel cutoff wall similar to the existing Reach 1 cutoff wall will be constructed across the majority of the open gap. This method of cutoff wall will be constructed by mixing the insitu soil with bentonite and cement to construct a panel of low permeability and low strength. At areas where a conventional panel wall cannot be constructed due to limited real estate, jet grout will be used. It is anticipated that the jet grout will be limited to less than 25 feet in length with a depth not deeper than the existing structure when constructing adjacent to a structure or existing Reach 1 panel wall. The jet grout will produce soil, cement and bentonite columns of low permeability and low strength. The jet grout method utilizes a high velocity stream of cement and bentonite slurry to erode the in-situ soils and to mix them thoroughly with the slurry. During the jet grout process, the overall fluid pressure is maintained at hydro-static pressure levels by maintaining an open borehole with continuous fluid return to the ground surface. This condition is required to prevent excess grout pressure build-up within the embankment. The columns would be placed in a line or geometric pattern that would produce a wall of the desired minimum thickness. The column diameters are expected to be in the range of 4 to 5 feet and will be placed in an overlapping or secant pile configuration to ensure that there will be no gaps in the completed wall section. The jet grout method is well-suited to making intimate contact with the existing structure walls or existing utility lines so that all seepage paths within the limits of the wall would be closed.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USA/COE/DACA17/W912EP-16-HHD-INDUSTRYDAY/listing.html)
- Record
- SN04052106-W 20160318/160316234756-a43a32a0a7031929dc0bd95efd882d68 (fbodaily.com)
- Source
-
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