Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Roof sewing
Roof sewing involves drilling hole 2 to 3 m deep, inserting wire rope, inserting short pipe connected to grouting pump, inserting Silex plug, and grouting hole with concrete gun at 300 lb pressure; method is used where conventional bolt is insufficient.
Roof sewing
Roof sewing involves drilling hole 2 to 3 m deep, inserting wire rope, inserting short pipe connected to grouting pump, inserting Silex plug, and grouting hole with concrete gun at 300 lb pressure; method is used where conventional bolt is insufficient.
Roof sewing
Eng Min J
Austin, C.C. (Autor:in) / Troften, E. (Autor:in)
1953
Aufsatz (Zeitschrift)
Englisch
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