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Spiral dropshafts 100 ft. deep on St. Paul sewers
Description of spiral dropshafts 100 ft. deep with staircase waterways developed by city of St. Paul for junction between lateral sewers and outfall tunnels on Kittsondale relief sewer system; two shafts, 16 ft. in diam. are capable of passing 1400 to 1900 sec. ft.
Spiral dropshafts 100 ft. deep on St. Paul sewers
Description of spiral dropshafts 100 ft. deep with staircase waterways developed by city of St. Paul for junction between lateral sewers and outfall tunnels on Kittsondale relief sewer system; two shafts, 16 ft. in diam. are capable of passing 1400 to 1900 sec. ft.
Spiral dropshafts 100 ft. deep on St. Paul sewers
Eng. News-Rec
Colestock, C.M. (author)
Engineering News-Record ; 105
1930
2 pages
2 Figs.
Article (Journal)
English
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