Upside Down Concrete Accelerates Large Tunnel Project
- Organization:
- Society for Mining, Metallurgy & Exploration
- Pages:
- 3
- File Size:
- 143 KB
- Publication Date:
- Jan 1, 1981
Abstract
Contractor chose and Owner allowed concrete to be placed using the arch first principle while excavating the 35'-3" O.D. rock tunnel. The contract included excavating and lining 26,000 L.F. of rock tunnel to 33'-I.D. Concrete was placed at a rate of 90LF per working day using a movable bridge to allow batching, mixing and pumping of concrete adjacent to the tunnel form.
Citation
APA: (1981) Upside Down Concrete Accelerates Large Tunnel Project
MLA: Upside Down Concrete Accelerates Large Tunnel Project. Society for Mining, Metallurgy & Exploration, 1981.