Date
11 May 1984, 8:00 am - 10:30 am
Abstract
Construction of the Charles Center Station of the Baltimore Metro required a cut-and-cover excavation 66 feet (20 m) deep in a major street in the central business district of Baltimore, Maryland. Several high-rise buildings were so close to the excavation that it was necessary to remove portions of the spread footing foundations which extended into the proposed station excavation. The contract documents required that the spread footings adjacent to the excavation be underpinned using steel pipe piles jacked to end bearing on bedrock. When it was apparent that difficulties in installation would result in substantial delays in project completion, the piles were deleted and a redesigned concrete slurry trench wall was constructed to confine the soil beneath the adjacent building foundations. Instrumentation data and visual observations indicated that the concrete slurry trench wall was successful in controlling settlement of the adjacent buildings to acceptable limits.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
1st Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1984 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Zeigler, E. J.; Wirth, J. L.; and Miller, J. T., "Slurry Trench Wall Replaces Structure Underpinning" (1984). International Conference on Case Histories in Geotechnical Engineering. 40.
https://scholarsmine.mst.edu/icchge/1icchge/1icchge-theme9/40
Slurry Trench Wall Replaces Structure Underpinning
Construction of the Charles Center Station of the Baltimore Metro required a cut-and-cover excavation 66 feet (20 m) deep in a major street in the central business district of Baltimore, Maryland. Several high-rise buildings were so close to the excavation that it was necessary to remove portions of the spread footing foundations which extended into the proposed station excavation. The contract documents required that the spread footings adjacent to the excavation be underpinned using steel pipe piles jacked to end bearing on bedrock. When it was apparent that difficulties in installation would result in substantial delays in project completion, the piles were deleted and a redesigned concrete slurry trench wall was constructed to confine the soil beneath the adjacent building foundations. Instrumentation data and visual observations indicated that the concrete slurry trench wall was successful in controlling settlement of the adjacent buildings to acceptable limits.
