A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Building on Hudson Yards
As a young geotechnical consulting engineer working in New York City, I was always curious as to why the city's building code prescribed a maximum allowable rock-socket skin-friction value of 200 psi for caisson design (rock-socketed drilled shaft with permanent casing) and left little evaluation of the rock to the geotechnical engineer. Generally, the caisson design process in NYC involves drilling boreholes and coring rock, establishing where the “good” rock begins, and then designing using 200 psi. Often, not much more evaluation of the rock goes into the design. The entire industry uses 200 psi — and that's just the way it is.
Building on Hudson Yards
As a young geotechnical consulting engineer working in New York City, I was always curious as to why the city's building code prescribed a maximum allowable rock-socket skin-friction value of 200 psi for caisson design (rock-socketed drilled shaft with permanent casing) and left little evaluation of the rock to the geotechnical engineer. Generally, the caisson design process in NYC involves drilling boreholes and coring rock, establishing where the “good” rock begins, and then designing using 200 psi. Often, not much more evaluation of the rock goes into the design. The entire industry uses 200 psi — and that's just the way it is.
Building on Hudson Yards
Geostrata
Paquette, Michael (author) / Gallagher, Marc (author)
GeoStrata Magazine Archive ; 25 ; 24-31
2021-12-01
Article (Journal)
Electronic Resource
English
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