TABLE 2
THE ASSHTO FLEXIBLE EQUATION IS AS FOLLOWS:
THE ASSHTO FLEXIBLE EQUATION IS AS FOLLOWS:
(-0.089) | ||
Log (10220 x trucks/day) = 9.36 Log (SN+1) – 0.20 + | 0.40 + 1094 | +0.372 (S.S.V. - 3.0) |
(SN +1) 5.19 |
VARIABLES:
Assumed: 20-year life, 1.4-18 kips per truck
S.S.V. = Soil Support Value
3.4 for most Strongsville’s subsoils
S. S. V. may be increased upon soil testing results
S. S. V. shall be decreased for poor support soils such as clays, topsoil, shale, some silty clays, etc.
SN = Structural Number
O.D.O.T. Item 404 SN = .035 x thickness (inches)
402 SN = 0.35 x thickness (inches)
301 SN = .035 x thickness (inches)
304 SN = 0.14 x thickness (inches)
310 SN = 0.11 x thickness (inches)