Any of you familiar with the Joint Task Force on Areas of Practice Document (JTFAP)? Apparently ASCE Geo-Institute has teamed up with the American Institute of Professional Geologists (AIPG) and the Association of Engineering Geologists (AEG) to define the practice of engineers, geotechnical...
As geohec has stated, using half of (Kh) is very common. However, this is not universally accepted. If you search the literature you will find recommendations from 25% of Kh to 100% Kh. Although I believe using the full Kh is VERY conservative, I have yet found a good argument for reducing...
