croton blog for croton-on-hudson new york


There's the Dam Drill...

May 13, 2006

engineers-drill-for-core-sample-of-croton-dam.jpg

Structural engineers were recently onsite at the base of the New Croton Dam with a drilling mechanism to conduct a routine test—held every 20 years—to analyze the structural integrity of the dam’s foundation. After a core sample is brought to the surface by way of a specially design drill bit, scientists analyze the composition of the sample as way of gauging the strength and composition of the foundation. During the process, the drill bores to a depth of 42 feet where limestone and marble is found nearest to the Croton River while granite is more abundant further to the East end of the dam.



Search


Recent Articles