Definition(s)
NC
API number style of thread design.
Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards
Nc
Bearing capacity factor at shallow spudcan penetration prior to any backflow.
Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global Standards