number 7 is what I'm asking about
here's Macon Ga table data
Step-1 : Calculate the culvert weight
culvert weight = D+T1
Step-2: Find the horizontal distance of W1 perpendicular to the road alignment using the batter slope :
horizontal distance perpendicular to the road,(W1) = (D+T1)×S - T2
Step-3 : Find the horizontal distance of W2 perpendicular to the road alignment using the batter slope :
horizontal distance perpendicular to the road,(W2) = (D+T1)×S – T2 – (D2 – T1) sin∅
Step-4 : For square culverts :
W1 angle = Skew angle + α from the table of angles
W2 angle = skew angle - β from the table of angles
Step-5 : Calculate W1 :
W1 = [(D+T1)×S-T2]÷Cos (∅+∝)
Step-6 : For skew culverts, adjust the initial perpendicular calculation of W2 for the offset created by the part of the headwall that is square to the culvert cell.
Check that is at least 1.5 x the culvert height. If 1.5 x (D+T1) is greater than the above horizontal distance, then choose 1.5 x (D+T1) as the horizontal distance.
Step-7 : Calculate W2 :
W2 = Horizontal distance from above / cos( ∅−
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