The Perkins Cove Seawall consists of a 650-ft-long timber wall constructed in 1950, later supplemented with Class VII stone blocks placed in front of the timbers (seaside). A 30-ft section of the seawall failed as a result of an ocean storm. The town sought FEMA assistance to make emergency repairs. D&K’s civil, structural, and geotechnical…
The Vermont Agency of Transportation had to replace a buried water conveyance structure that was (hydraulically) undersized and causing the rail and roadway embankments to act as a dam during moderate and large storm events. Located 70 feet below grade in some places, the existing system of metal pipes and concrete structures was in poor…
The City of Montpelier needed to replace a 12-ft-high by 70-ft-long retaining wall located within several feet of a home and serving a low-volume residential road. D&K provided survey, civil, geotechnical, and structural engineering and permitting to replace the metal bin wall with a modular concrete block wall system. We also provided bid and construction…
The Vergennes 9B Hydroelectric facility is a historic hydroelectric plant on the Otter Creek centrally located in downtown Vergennes. Its penstocks were nearing the end of their service lives, and the facility was in need of reconfiguration and operational improvements. D&K worked with the client to design new penstocks and reconfigure the powerhouse to significantly…
To maintain operation under its FERC-issued license, the owner was required to furnish a Part 12D Inspection Report to FERC. Serving as the Part 12D independent consultant, D&K’s engineering team reviewed and analyzed performance and design data and conducted a visual inspection of the water retaining portion of the facility, including both abutments, both powerhouses,…
Located downstream of a large flood control dam, the EHC hydroelectric facility includes turbines at two locations along a one-mile-long intake channel and produces approximately 1.26 MW. The owner needed to replace and upgrade various components of the intake, including replacing the headgate lifting frame, replacing the rack-raker system, replacing the existing timber site/retaining walls…
D&K provided electrical design for a $75M renovation and new construction for a nursing home that consists of three wings serving long-term care, physical rehabilitation, and memory care needs. The project includes state-of-the-art nurse call, data, and communication systems, and an addressable fire alarm. In addition to the normal power design, the project included critical…
To address conditions posed by structural concrete sections nearing the end of their service life, the owner needed to rehabilitate the intake structure at the lower Middlebury hydroelectric project. The D&K team designed improvements, including a new reinforced concrete headwall structure to utilize portions of the existing headwall while allowing for equipment clearance requirements. D&K…
With 122 beds, the Central Vermont Medical Center serves the 26 communities of Central Vermont and provides a variety of inpatient and outpatient services. For decades, CVMC has entrusted D&K to assist with the support of their projects with civil-site, permitting, traffic engineering, and MEP needs. Our extensive work on the CVMC campus has provided…