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. Coachlace Pond Dam (MA 00106), Nashua River Basin, Clinton, Massachusetts. Phase I Inspection Report
Coachlace Pond Dam is a 440-foot long, 13-foot high earthfill dam with a stone wall along the top of most of the upstream slope. The spillway is a 21.7 foot long, ungated weir with vertical I-beams forming four bays for flashboards. The outlet works at the dam include gate house A adjacent to the spillway, two outlet conduits, and gate house B downstream from the dam. The outlet conduits are 20 and 24 inches in diameter and lead to mill buildings. there is a bypass from the 24-inch outlet conduit to the channel downstream of the spillway. There is also an earth dike about 900 feet long and 1.4 feet high on the northeast shore of the pond. The crest of the dike is at E1 333.0 which is lower than the crest of the dam. The dam is considered to be in fair condition. The following are visible signs of distress which indicate a potential hazard at the site: deterioration of the brick service building over the spillway, seepage from the downstream face of the spillway and from both side walls, severe erosion of the mortar facing on the side walls of the spillway channel and approach channel to the gate house, growth of trees and brush in the floor of the spillway channel and on the upstream face of the dam, lack of access to gate house A, lack of suitable access to gate house B, possible leakage from gates in gate house B. An outflow test flood of 2,010 cfs will overtop the dike by a maximum of 3.0 feet, but will not overtop the dam. The spillway can discharge only about 19 percent of the test flood before overtopping the dike
National Program for Inspection of Non-Federal Dams. Coachlace Pond Dam (MA 00106), Nashua River Basin, Clinton, Massachusetts. Phase I Inspection Report
Coachlace Pond Dam is a 440-foot long, 13-foot high earthfill dam with a stone wall along the top of most of the upstream slope. The spillway is a 21.7 foot long, ungated weir with vertical I-beams forming four bays for flashboards. The outlet works at the dam include gate house A adjacent to the spillway, two outlet conduits, and gate house B downstream from the dam. The outlet conduits are 20 and 24 inches in diameter and lead to mill buildings. there is a bypass from the 24-inch outlet conduit to the channel downstream of the spillway. There is also an earth dike about 900 feet long and 1.4 feet high on the northeast shore of the pond. The crest of the dike is at E1 333.0 which is lower than the crest of the dam. The dam is considered to be in fair condition. The following are visible signs of distress which indicate a potential hazard at the site: deterioration of the brick service building over the spillway, seepage from the downstream face of the spillway and from both side walls, severe erosion of the mortar facing on the side walls of the spillway channel and approach channel to the gate house, growth of trees and brush in the floor of the spillway channel and on the upstream face of the dam, lack of access to gate house A, lack of suitable access to gate house B, possible leakage from gates in gate house B. An outflow test flood of 2,010 cfs will overtop the dike by a maximum of 3.0 feet, but will not overtop the dam. The spillway can discharge only about 19 percent of the test flood before overtopping the dike
National Program for Inspection of Non-Federal Dams. Coachlace Pond Dam (MA 00106), Nashua River Basin, Clinton, Massachusetts. Phase I Inspection Report
1978
80 pages
Report
Keine Angabe
Englisch