site development
DGR Engineering (DGR) worked with the City and the project architect for all aspects of the project including topographic survey, site design, construction survey, construction observation and administration. With the goal of limiting impacts to the Floyd River, existing storm sewer outfalls from previous site developments were utilized along with bio-retention cells placed throughout the parking lots to improve storm water runoff quality. Parking lot and building designs were specifically matched to the irregular site shape for efficient use of the space. A parking lot along the south side of the building will provide for a shared parking option with future developments.
Site elevations were set to provide adequate surface drainage as well as pedestrian-friendly grades for building visitors and event goers. The final design utilizes the city’s proposed recreational trail adjacent to the site which will provide a pedestrian path to the building from the north parking lot. Truck turning movement modeling was used in parking lot design to provide for semitrailer routes around the building and to the proposed recessed loading docks.
DGR coordinated closely with the project’s landscape designer to develop workable solutions for complex areas of the design including acceptable height and placement of the landscape wall, as well as front entrance features which needed to allow adequate sight distance for the main parking lot and building driveway.
DGR performed the boundary and topographic surveying as well as the site design of school building addition as a subconsultant of Architecture, Inc.
The school facility addition design included storm sewer upgrades, pedestrian facilities to multiple building levels, enhanced and expanded parking, as well as significant embankment work to match the existing site constraints.
The addition cut off an existing overflow drainage path so an enhanced storm sewer system capable of draining runoff from a 500 year storm event was designed and constructed.
This project required working with a building design team and ownership group to overcome design challenges and communicate with all project stakeholders. The facility was completed and opened in late fall of 2015 for the Central Lyon Community School District.
Sioux Center Community Hospital relocated their hospital facility, which required the completion of several smaller projects in conjunction with the overall hospital construction project.
The new hospital facility design included City utility connections, accounting for the increased traffic on the local road system, mass excavation to accommodate the side hill construction and walk-out basement, a storm water study to analyze the adjacent natural drainage creek, a new helipad facility, a decorative garden overlooking the retention pond, as well as a mobile MRI parking bay. The facility opened in the spring of 2014.
DGR performed the boundary and topographic surveying as well as the site design of school building addition as a subconsultant of Architecture, Inc.
The school facility addition design included storm sewer upgrades, pedestrian facilities to multiple building levels, enhanced and expanded parking, as well as access road design to facilitate the future campus growth.
The design also included realigning water main and sanitary sewer main beneath the building link to avoid proposed footings as well as a rainfall harvesting system to collect and recycle rainwater from the building roofs.
DGR Engineering worked alongside the City of Sioux Center and Sioux Center Land Development to help secure Iowa DOT RISE funding. Following a topographical survey and preliminary design, DGR performed the boundary survey which included transferring new road right-of-way to the Iowa DOT.
The design and construction included evaluating the current and future growth trends of this portion of the City, such that sanitary sewer and water distribution system could be adequately sized to serve this development and future growth. The storm sewer design not only included the sizing of storm sewer pipe, intakes and stormwater detention basins, but also addressed an existing, undersized culvert beneath Highway 75. A phased traffic control plan was necessary to facilitate 2-way traffic on Highway 75 while a new culvert was being installed. DGR also worked with the businesses who relocated their operation along the highway frontage during the planning, design and construction phases to help the project best fit the end-user needs.