UNDERPINNING WITH CHEMICAL GROUT

As the Pittsburgh Light Rail Transit subway was extended down a narrow downtown street, it was necessary to protect the foundations of six large buildings. The result was the largest chemical grouting job in U.S. history. A sodium-silicate-based grout was injected through almost 4 miles of grout pipe. All buildings are founded on spread footings subject to unacceptable ground movement and subsequent building settlement. Because grouted soil directly supported the buildings, rigid support walls for the cut-and-cover excavation were unnecessary. Soldier piles and lagging were installed instead. Instruments showed that there was almost no ground movement.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/10480594
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Parish, WCP
  • Baker, W H
  • Rubright, R M
• Publication Date: 1983-8

Media Info

• Features: Figures; Photos;
• Pagination: p. 44-45
• Serial:
  • Civil Engineering
  • Volume: 53
  • Issue Number: 8
  • Publisher: American Society of Civil Engineers
  • ISSN: 0885-7024
  • Serial URL: http://www.pubs.asce.org/ceonline/newce/html

Subject/Index Terms

• TRT Terms: Construction; Cut and cover tunneling; Excavation and tunneling; Foundations; Grouting; Railroad facilities; Sodium silicate; Soil stabilization; Subways
• Geographic Terms: Pittsburgh (Pennsylvania)
• Old TRIS Terms: Subway construction; Wayside
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; Materials; Public Transportation; Railroads;

Filing Info

• Accession Number: 00382587
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 30 1984 12:00AM