Research to improve tunnel support systems
By: S. L. Paul... [et al.] ; Dept. of Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois.
Contributors: Paul, S. L.; United States. Federal Railroad Administration.
Series: Report - Federal Railroad Administration ; no. FRA-ORD & D-74-51; Report (National Institute of Standards and Technology (U.S.)) -- no. FRA-ORD&D-74-51.
Publisher: Dept. of Transportation, Federal Railroad Administration; for sale by the National Technical Information Service
Published: 1974
Place of publication: Washington; Springfield, Va
Language: eng
Number of pages: 321
Subjects: Reinforced concrete, Fiber -- Analysis.; Tunnel lining -- Testing.; Tubular steel structures -- Testing.
Other titles: Studies to improve tunnel support systems.
Notes: Cover title.

Final report, August 1972-August 1973.

Prepared under Grant no. DOT-FR-30022 by the Department of Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois for Department of Transportation, Federal Railroad Administration, Washington, D.C.

Performing organization report no. UILU-ENG-74-2016.

Includes bibliography.