Results are summarized herein of five supplementary borings to investigate subsurface conditions along the subway alignment at the planned location of the Addison Route crossing of the Capital Beltway. The report contains geological sections which summarize information from the borings, logs of borings, results of laboratory test on samples recovered and text describing design and construction problems.
Volume 5 evaluates empirical methods in tunneling. Empirical methods that avoid the use of an explicit model by relating ground conditions to observed...
Due to the high cost of urban underground transit construction in recent years, construction practices used in other countries were reviewed to determ...
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