Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Long-boomed backhoe digs deep trench
Open trench, 21 ft wide, 28 ft deep, for concrete sewer in Chicago, Ill, was excavated by 2 1/2 cu yd drag shovel which removed up to 1500 cu yd of excavation in 9 hr shift; boom of shovel is 32 ft, and dipper stick 17 ft long; concrete was placed through metal chute which discharged into flexible elephant trunk tremie to avoid segregation of materials. (see also Excavating Engr v 44 n 9 Sept 1950 p 18-21, 46-7)
Long-boomed backhoe digs deep trench
Open trench, 21 ft wide, 28 ft deep, for concrete sewer in Chicago, Ill, was excavated by 2 1/2 cu yd drag shovel which removed up to 1500 cu yd of excavation in 9 hr shift; boom of shovel is 32 ft, and dipper stick 17 ft long; concrete was placed through metal chute which discharged into flexible elephant trunk tremie to avoid segregation of materials. (see also Excavating Engr v 44 n 9 Sept 1950 p 18-21, 46-7)
Long-boomed backhoe digs deep trench
Eng News-Rec
Engineering News-Record ; 145
1950
3 pages
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.