Chicago : Engineering and Contracting Pub. Co. · leaf 107
ully preservedfrom one representative hole under the lock,one under the dam and one under the abut-ment ; while for each hole put down accuraterecords were kept. In case rock was struckat depths less than the required excavationthe holes were driven to and beyond thedepths to be excavated; in case… … PinEng VContg 13 SpitesCountersunh Spud Hoists q Wire If ope Design for Hand Operated Spud for DrillBoat. were only about 2 ft. long, unless the rockformation in that depth was deemed of ques-tionable nature for foundation purposes, thencores were taken up to such lengths as wouldreveal suitable…
Buildings
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