Structural engineering services for the design of a new 3-story, 40,000 sf medical office building. Project was constructed using a design-build delivery system. The structure consists of structural steel beams, joists, and joist girders with conventional spread footing foundations. Project design and documentation utilized BIM with links to structural analysis software for information transfer.
Spaulding High School Biomass Boiler
Engineering services, project management, and cost control for award-winning biofuel project. Design and specifications for providing the school (220,000 sf) with wood chip heating capabilities. Provided full evaluation of available wood chip boiler systems in collaboration with the Barre Supervisory Union and presented an evaluation matrix and recommendations. Siting of the wood chip boiler adjacent to the existing boiler house enabled the use of existing pumps, piping, and valves to deliver heating hot water from the wood chip boiler to the existing hydronic heating system. The project approach included innovative design of the heat exchanger system to avoid flow disparities and irregularities between the new and existing pumping systems without expensive reconfiguration. Design included separate pumping and underground distribution piping system to serve remote gymnasium and support building. Provided permitting services to obtain a State of Vermont Air Quality Permit. The design integrated the wood chip boiler system with the design of a remote boiler house to provide the school with the benefits of a single competitively bid construction project.
Sidewalk Conceptual Alignment Analysis
The Central Vermont Regional Planning Commission and the Town of Moretown selected D&K to update the 1996 Conceptual Alignment Analysis for Pedestrian Facilities for sidewalks throughout the Village area. The goal of the project was to reassess the original recommendations, update the associated costs, and confirm public support. D&K identified practical improvements that can readily be implemented through the VTrans Project Development Process. The project area included a 0.8-mile stretch of the VT 100B corridor from Pony Farm Road to Bridge #4 over the Mad River.
Professional services provided for this project included assessing the feasibility and preparing cost estimates for several options to improve the intersection of VT 100B and Moretown Mountain Road. Additionally, D&K assisted Moretown’s Safe Routes to School Committee in preparing their 2010 grant application and to identify options for providing improved access to the school for students.
D&K’s scope of services included compiling base maps and documenting existing conditions; investigating local and regional concerns; identifying activity centers; developing conceptual alignments and plans; identifying right-of-way issues, utility conflicts, natural/cultural resource constraints, and permitting requirements; conducting several alternatives presentation meetings; developing preliminary cost estimates and a project time line; and compiling results in a final report.
Sewer Line Extension
The Lower Plain region of Bradford, Vermont, is characterized by residential and commercial development and an underutilized industrial park. Lack of access to the Town’s wastewater treatment facility has been an impediment for further development in the Lower Plain region and specifically in the industrial park. The Town initiated a sewer system expansion project to serve the Lower Plain region and to help attract new business. DuBois & King provided the design for the sewer line extension and worked with the Town to secure project funding.
The project resulted in the extension of municipal wastewater service to the Lower Plains region of the Town, which is characterized by commercial and industrial development including the Bradford Industrial Park. Final design was completed and permits obtained for 10,000 ft of 8-inch diameter gravity sewer, 7,000 ft of 4-inch diameter force main including crossing the Waits River, and a wastewater pump station. Long sewer runs, very flat topography, and close proximity to State roads and associated right-of-way resulted in a complicated sewer alignment design. Numerous sewer mainline and service crossings of Routes 5 and 25 required a jacking/boring operation to minimize disturbance to these State roads. The design included an approximate 300-ft crossing of the Waits River using horizontal directional drilling for installation of the 4-inch diameter HDPE force main. Professional services included assisting the owner with landowner coordination.
Scribner Covered Bridge Flooding Remediation
The historic Scribner Covered Bridge and an adjacent roadway intersection and residence are subjected to frequent flooding by the Gihon River. The bridge is undersized, significantly constricting the channel width, and rests on ledge. DuBois & King identified alternatives to reduce flooding and advanced a preferred alternative to preliminary design. Services included hydraulic modeling of the river and the floodplain for the 10-, 25-, 50-, and 100-year flood events. The project team identified 8 distinct alternatives to reduce the frequency or severity of flood damages in the area and prepared accompanying cost estimates. Alternatives included the addition of culverts, drainage ditches, roadway realignment, riprap or articulated concrete blocks, and specific combinations of these options. The preferred alternative included grading changes to concentrate the over-topping flows and armoring of the surface to reduce damages. Floodplain access was maintained to promote river stability. Professional services included:
Topographic survey
Geomorphologic review
Hydrology to develop peak river flow estimates
Hydraulic modeling
Identification and evaluation of alternatives
Cost estimates
Preliminary plans for the preferred alternative