Poseidon Wharf Repairs
Location: Cape Canaveral, FL
Triton Marine contracted with NAVFAC Southeast for a design-bid-build project to repair and renovate Poseidon Wharf at Cape Canaveral Space Force Station, FL. The wharf required multiple repairs to restore its original design capacity and extend its remaining useful life in order to service the needs of the Navy, Air Force, Merchant Marines, Coast Guard, NASA, and Space X.
This project involved construction of a 1200’ x 60’ concrete deck and three 60’ x 60’ access bridges consisting of repaired piles, repaired and new pile caps, CIP girder beams, concrete precast sections, a marine concrete topping slab, utility vaults, duct banks, fender system, communications, electrical, sewer, oily waste, sanitary sewer, demineralized water, fire water, potable water, and compressed air systems.
The project consisted of the following:
- -Demolition of 60-year-old derelict 45-ton portal crane
- -Demolition of 2400 LF of deteriorated crane rail
- -Demolition of 90,000 SF concrete wharf deck to include concrete precast sections and CIP girder beams
- -Spall repairs: Pile cap, beam, soffit, utility vault, sheet pile, deck, and piles
- -New mechanical systems, communications, and lightning protection grounding system
- -New electrical system including high mast lighting and outboard wharf lighting
- -1450 EA pile jackets (structural and non-structural) with passive cathodic protection system
- -Repair soil voids along seawall roadway
- -Demo and install new composite pile fender system
P258: Next Generation Jammer Warehouse, NASWI
Location: Whidbey Island, WA
Triton contracted with the U.S. Navy to design and construct a new Green Building Certified single-story 14,000-square foot Type IIB (non-combustible, fully sprinkled) pre-engineered building with a new 100 foot long by 44-foot-wide pre-engineered metal canopy to create a covered storage area.
Demolition of existing pavements and relocation of site utilities were required to prepare the site for construction. In addition, new pavements were provided to match existing, and concrete aprons were poured at exterior doorways.
The interior floor was constructed reinforced slab on grade with a design load of 200psf. The building included mechanical, electrical, and communication utilities.
This project consisted of the following:
- Footings for concrete slab
- Setting anchor bolts
- I-Beams and Rafters
- Storm drain installation
- Extensive site work
- Hauling of excess soils
Oil Dock No. 6 Construction, Oil Dock No. 3 Fender System Replacement, and Facility Enhancements, and Maintenance Dredging
Location: Brownsville, TX
Oil Dock No. 6 construction included an approximate 1,300-foot-long bulkhead and approximately 215,000 cubic yards of dredging to a depth of 42’ MLT, as well as 56,600 CY maintenance dredging for existing docks. Major project items involved furnishing and installing steel sheet piles, precast-prestresses concrete piles and panels, steel pipe piles, six multi-pile mooring structures, fenders, four multi-pile breasting structures, and shoreline stabilization using articulating concrete block revetment mats. Major yard items included site clearing & excavation, backfilling, crushed stone base course, hot mix asphaltic concrete pavement, site lighting, electrical, and potable water main extension.
Oil Dock No. 3 tasks included replacing two existing breasting structure fenders with new spools, fenders, and chains. The facility enhancements work constructed a pile-supported barge fendering system and two breasting structures.
This project consisted of:
- Mooring Structures
- Steel Sheet Pipe Pile
- Breasting Structures
- Precast concrete piles
- Shore Stabilization
- Excavation and Backfilling
- CIP Concrete
- Site Improvements
- Steel Sheet Piles w/ Tiebacks
- Fender System
Structural Repairs to Piers 2 and 15
Location: Groton, CT
This design-bid-build project encompassed work on two piers at Naval Subbase New London. Both piers required the removal of old wooden fender piles and replacing them with new fender piles. The original contract called for precast concrete piles to be installed for the new fender systems which will be designed to handle barges, tugs, and small crafts. Triton was able to provide two separate value engineering construction proposals for each pier using plastic reinforced piles in lieu of the precast concrete piles. The Navy recognized the cost savings and benefits of using plastic piles. During the 2nd VECP process for Pier 15, the Navy added submarine berthing capability for the fender system. Triton was able to add this into the design and still provide cost savings for Pier 15's fender system.
Pier 15: 187 steel piles were to be wrapped for corrosion protection. They were located on the mooring platforms to which the submarine dry dock ties up, and 52 steel piles were to be jacketed for structural integrity.Pier 2: 79 piles required wrap. Initial inspection of the piles revealed many had extensive deterioration. We proposed a repair that would provide pile jackets for these piles. Work was conducted on the piles that were to be wrapped, and nine pile jackets were approved months later. These 9 pile jackets were installed towards the end of the project as a priority of pile work was sequenced to Pier 15. Pier 2 also required turbidity monitoring for all work involving the sea floor, as well as a turbidity curtain in place for that work.
For both piers, lead paint removal, recoating of mooring cleats/double bitts, topside spalls on Pier 15, underdeck spalls on Pier 2 and 15, new electrical conduit and wiring were required for tugs/barges, as well as a new epoxy overlay and broadcasting of sand were required.
This project consisted of:
- Deck and Pile Demo
- New Fender System
- Concrete Repairs
- Coating of Sheetpile Wall
- Mooring System Components
- Deck Sealant
- Pile Wrap
RM 09-1877 Repairs to Pier 4
Location: Philadelphia, PA
SCOPE OF WORK:
The design build project involved replacing various sections of the pier to provide vehicle and crane access to inactive ships berthed at the facility. Two operational platforms were designed for unrestricted operation of a 240-ton capacity mobile crane and an additional three platforms were designed and constructed for unrestricted operation of a 90-ton capacity portal crane. From the pier, west 300' until the property line, the outboard, high-level deck along Wharf 4A was demolished. Along the face of the existing wharf from 80' west of the pier, across the head of the pier to 80' east of the pier, a new steel sheet pile bulkhead was installed. As part of the design, the new pier platforms were designed to accommodate the mooring and berthing loads associated with the vessels. In addition, all mooring fixtures were upgraded including modification of their foundations to accommodate the proposed use of the structure.
Electrical systems were maintained during construction as necessary and removed and re-installed; lighting was upgraded to meet UFC requirements for lighting levels.
All abandoned utilities were removed from the Pier and wharf. The facility was designed for a minimum of 25-year service life for the wharf repaired areas and 50-year service life for the new pier structures.
The pier and wharf repairs were designed and constructed to accept the inactive CV class vessels.
Ship characteristics of the project design vessels are as follows: Ship Class: CV; Overall Length (Feet): 1092; Beam (feet): 41; Displacement (Long Tons): 104,400; Approach Velocity (feet/second): 0.18.
Hazardous materials were abated from the pier and wharf area in accordance with all local, state, and federal regulations and historical project records were maintained.
This project consisted of:
- Steel Pipe Piles
- 90,000 sf Deck
- Mooring Hardware
- Fender System
DBB – P-308 Commercial Power Connection for Naval Computer / Telecommunications Area Master Station, Cutler Maine
Location: Cutler, Maine
Triton Marine contracted with the U.S. Navy to supply full mission 15 MW capacity power to the mission critical Naval Computer and Telecommunications Station by way of installing a dedicated submarine cable interconnected directly to the local 115 kV substation. Scope included maintaining the existing diesel power plant to provide a backup supply of power to the VLF site by way of upgrading the existing 1950’s 4.16 KV switchgear and integrating it into the new substation and SCADA system.
To interconnect the local substation to the Cutler Power Plant, nearly 7 miles 34.5kV subsea power transmission cable was trenched 3 meters into the seafloor across Machias bay in early winter months. Prior to cable installation a marine hazard and route clearance survey were completed to ensure successful cable placement. Due to the nature of trenched subsea cable, cable lay operations were maintained 24-hours a day for 20 days.
The subsea cable upland transition required threading 1,200ft of cable into a custom anchoring device installed 30ft underwater and then cautiously pulling the cable trough 1,000ft of 10-inch horizontal directional drilled and steel cased wireway to terminate in new upland electrical vaults at both ends.
To support the power interconnect a new power distribution system, comprised of 34.5kv Switchgear, 5kv Interior Switchgear, (2) Power Transformers, was installed with all the typical supporting appurtenances. Primary Challenges included installing and integrating the new system into existing 1950’s diesel powered power station. The existing building required modifications to provide space for modern switchgear and the SCADA system required custom programing to enable communications with the existing backup generator power system.
- CIP Concrete
- Subsea Cable Lay