10:30 AM-11:30 AM
Format: Case Study
Knowledge Level: 200 level
Green roofs capture rainwater for evapotranspiration; delay and lessen runoff into storm drain systems; reduce heat island effects; can reduce heating and cooling costs; and can provide ecological value to urban areas.
Pervious walking and parking areas reduce stormwater runoff, recharge groundwater, and eliminate ponding. The porous parking area paving is located on the north and west sides of the Capitol facing Bushnell Park, and pervious walkways are around the building and along the areas where the cistern and rain gardens are located.
Rain gardens reduce the need for grey infrastructure, conventional pipe structures, and provide ecological and aesthetic value to urban areas. Rain gardens on either side of the driveway entrance from Capitol Avenue demonstrate a residential application, while another along the driveway southeast of the Capitol building demonstrates a street retrofit for urban applications. It is hoped that these rain gardens will spark interest for creating bump-outs or bio-swales for urban parking lots or streetscapes. The design at the Capitol provides treatment for the first flush of a rain event.
The rainwater harvesting demonstration consists of a cistern to capture rainwater from several of the building’s roof leaders and reduces runoff by storing it for use to supplement the irrigation system on the Capitol grounds. The cistern is installed below ground at the southeast corner of the Capitol building. This system utilizes roof top rainwater to reduce irrigation costs.
Joseph Drew, MBA, CFM, PMP, SFP, SFIA Facility Sustainability Fellow
Connecticut General Assembly
Facilities Project Manager
Office of Legislative Management