Evaluation Of Seasonal Effects On Subgrade Soils. TRB PAPER 03-03801 Andrew G. Heydinger Mail Stop 307 Department of Civil Engineering University of Toledo Toledo, OH 43606-3390 (419) 530-8133 Voice (419) 530-8116 Fax [email protected] Purpose of Presentation.
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F(t) = A0 + B1 sin[(t-f)]
t = time expressed as the day of the year
A0 = mean value
B1 = the amplitude
= the normalized frequency (=2π/365.25)
f = time shift in days
T(t) = 10.70 + 12.39 sin[2π/365.25 (t - 109)]
VMC(t) = 37.1 + 1.66 sin[2π/365.25 (t - 130)]
Mr(psi) = 77235.54 - 639.121S(%) - 5418.33sd