Client: U.S. Army Corps of Engineers, Baltimore District
Location: Maryland
Services: Site/civil engineering, transportation engineering
Under an indefinite delivery contract, KCI provide civil and structural engineering services as-needed for projects located at Proving Grounds. Tasks included:
Post-Wide Sediment and Erosion Control Plan. KCI provided engineering services to study, provide designs, plans, manuals, and follow-up support as required to obtain State approval for a Post-Wide Sediment and Erosion Control Plan. Work involved maintenance of existing and construction of new ditches; de-watering various excavations and structures; updating and incorporating all of APG’s existing general approval plans; maintenance, repair, and reconstruction of improved or unimproved roadways; drain pipes; establishment and maintenance of stockpile areas; underground storage tanks; and cleanout and removal of sediment from basins and traps and guidance manuals.
Roadway and Parking Improvements. KCI provided design services for development of construction documents for the rehabilitation of interior roadways, which serve as a 16-block section of historic Pre-World War I wood frame buildings, and parking improvements. Over the past 80 years these wood frame buildings have served many functions and several have railroad tracks embedded in the old concrete, creating drainage problems and poor parking access. Many of the first floor elevations and sidewalks vary between adjacent buildings, creating problems with ADA access from roadway and sidewalks. The roadway crown breakovers, originally constructed to meet standards required for horse and wagons with cross slopes up to 16-percent, were never rehabilitated, just graded and paved with bituminous concrete pavement with the same cross slopes.
KCI developed roadway plans to fix the drainage and parking problems and address ADA access compliance. The design plans were developed to create a “campus-like” setting and address the existing open roadway sections and poorly draining surface drain ditches, which ponded run-off on the front lawns of existing buildings and landscape areas. The design involved a closed typical roadway section with parallel and straight-in parking, all with optional sidewalk. A drainage system was designed with to maximize collection of all drainage run-off. Work also included design of concrete pads for dumpsters and recycling bin locations, striping for pick-up and delivery areas in front of existing buildings, and an optional sidewalk for pedestrian access throughout the 16-block area.
To accommodate funding schedules, the base requested construction plans be broken into multiple phases. KCI developed an overall master plan with the initial sequence of construction controlled by the stormwater management and drainage and/or relocation of existing utilities, followed by roadway construction. The design team ultimately developed 21 construction phases, ranging in cost from $40,000 to $170,000, sequenced to maintain positive drainage throughout the entire construction. Each phase was designed independently tying it into existing conditions and matching the adjacent construction phases.
All designs and plans were prepared in accordance with the Base IDQ Contract, which was in accordance with Maryland State Highway Administration Standard Specifications for Construction and Materials.
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