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1 Aug 1971

Technical Reports

Embankment Support for a Railroad Test Track: Design Studies

Author
R. J. Dietrich, J. R. Salley

Subject Facilities & Test Equipment

Keywords: Geology, Topography, Vibration-measurement, Clay, Bedrock, Soil Strain Measurements

Abstract:

The events and considerations leading up to the production of an embankment design for the support of the Kansas test track are described. Included are discussion of: site...

Report Number
FRA-RT-72-07
Office
RDI-21

1 Sep 1970

Technical Reports

Heat-Assisted Tunnel Boring Machines

Author
J. P. Carstens, W. R. Davison, C. A. Brown, A. R. Smith, F. J. McGarry

Subject Facilities & Test Equipment, Tracks & Structures

Keywords: Tunneling Machine Performance, Laser Technology, Excavation

Abstract:

A study was performed to determine: a) the increase in tunneling machine performance in hard rock resulting from heat weakening of the rock in advance of the tunneling machine...

Report Number
FRA-RT-71-63
Office
RDI-22