A design example is presented below to illustrate the box culvert design calculations:
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: Determines the size needed to handle peak flow. A design example is presented below to illustrate
Would you like a pdf? I can guide on how to create. 219 psf ) per ft width
[ Q = \frac1n A R^2/3 S^1/2 ]
: DL (earth) = 120 × 4 = 480 psf DL (self) = 150 × (6/12) = 75 psf → Total DL = 555 psf LL (distributed) = approx 300 psf (after distribution) ( w_u = 1.25×555 + 1.75×300 = 1,219 psf ) per ft width