Jan 10, 2019 #1 geomane Geotechnical Apr 4, 2013 199 0 0 US How are the presumptive allowable lateral pressures calculated in the IBC? Sand, for instance, is 150 psf/ft. Is this calculated from the passive pressure divided by a safety factor?
How are the presumptive allowable lateral pressures calculated in the IBC? Sand, for instance, is 150 psf/ft. Is this calculated from the passive pressure divided by a safety factor?
Jan 10, 2019 #2 PEinc Geotechnical Dec 2, 2002 4,079 0 36 US Not sure what IBC is thinking; but if sand is 100 pcf with Rankine Kp of 3.0 for phi = 30 degrees, and with a SF = 2.0, p[sub]p[/sub] = 100 x 3.0 / 2 = 150 psf/vf. Probably conservative. http://www.PeirceEngineering.com Upvote 0 Downvote
Not sure what IBC is thinking; but if sand is 100 pcf with Rankine Kp of 3.0 for phi = 30 degrees, and with a SF = 2.0, p[sub]p[/sub] = 100 x 3.0 / 2 = 150 psf/vf. Probably conservative. http://www.PeirceEngineering.com