Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Salt-filled vertical drains for highway improvement
Work described took place in Boone County, Ill; drain is vertical hole punched by pneumatic drill to depth below frost plane; holes punched are filled with rock salt to obtain frost free hole that can operate 24 hr per day without interruption; 2 lb of salt is applied to each hole.
Salt-filled vertical drains for highway improvement
Work described took place in Boone County, Ill; drain is vertical hole punched by pneumatic drill to depth below frost plane; holes punched are filled with rock salt to obtain frost free hole that can operate 24 hr per day without interruption; 2 lb of salt is applied to each hole.
Salt-filled vertical drains for highway improvement
Pub Works
Frank, N.H. (Autor:in)
Public Works ; 88
1957
3 pages
Aufsatz (Zeitschrift)
Englisch
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