Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
National Program for Inspection of Non-Federal Dams. Twin Lakes Dam (CT 00593), Housatonic River Basin, Salisbury, Connecticut. Phase I Inspection Report
Twin Lakes Dam is a 20 foot high earthen embankment and the length appears to be approximately 100 feet. The dam is in good condition. The inspection revealed cracks parallel to the dam crest in the pavement and dipping of the road surface in the areas of the intake structure. Brush and trees occupy the upstream face of the embankment left of the structure. The upstreams face right of the sructure is a maintained lawn with tress. Trees are also found on the downstream face. Soil erosion and a wet area were observed on the downstream face of the embankment. Loose blocks of stone were found in the right downstream channel. There is no spillway at the dam. The outlet works consists of 1-24 inch diameter and 1-36 inch diameter pipe whose maximum possible discharge is 225 cfs. This capacity is considered insignificant in terms of consideration of the outlet works as a storm attenuating discharge facility. However, at the top of the dam elevation of 736 feet there is available surcharge storage of 3600 acre-feet which is equal to the test flood volume of 3610 acre-feet. Therefore, the test flood volume of 1/2 PMF will be contained without overtopping the dam and without releasing any of the storm inflow downstream.
National Program for Inspection of Non-Federal Dams. Twin Lakes Dam (CT 00593), Housatonic River Basin, Salisbury, Connecticut. Phase I Inspection Report
Twin Lakes Dam is a 20 foot high earthen embankment and the length appears to be approximately 100 feet. The dam is in good condition. The inspection revealed cracks parallel to the dam crest in the pavement and dipping of the road surface in the areas of the intake structure. Brush and trees occupy the upstream face of the embankment left of the structure. The upstreams face right of the sructure is a maintained lawn with tress. Trees are also found on the downstream face. Soil erosion and a wet area were observed on the downstream face of the embankment. Loose blocks of stone were found in the right downstream channel. There is no spillway at the dam. The outlet works consists of 1-24 inch diameter and 1-36 inch diameter pipe whose maximum possible discharge is 225 cfs. This capacity is considered insignificant in terms of consideration of the outlet works as a storm attenuating discharge facility. However, at the top of the dam elevation of 736 feet there is available surcharge storage of 3600 acre-feet which is equal to the test flood volume of 3610 acre-feet. Therefore, the test flood volume of 1/2 PMF will be contained without overtopping the dam and without releasing any of the storm inflow downstream.
National Program for Inspection of Non-Federal Dams. Twin Lakes Dam (CT 00593), Housatonic River Basin, Salisbury, Connecticut. Phase I Inspection Report
1979
76 pages
Report
Keine Angabe
Englisch