Input the inclining bottom point B1, B2 & B3
The bottom points B1, B2 and B3 are designed for the vertical plates in Lusas.
Using expressions for the bottom points one can easy increase or decrease the depth of the box to optimize its stiffness.
The vertical distances b1, b2, b3 are calculated for knowing a1, a2, a3 and c. The distances (a1, b1), (a2, b2) and (a3, b3) are then entered as input for points B1, B2 and B3 in Excel BRIDGE sheet (or input text file INPUT BRIDGE.c )
Optionally, the vertical input distances b1, b2 and b3 can be measured in Revit. In profile shown above drag the bottom line of point 3-7 down to a new depth of deck box. Then drag a horizontal line through the end top line 5, then drag three vertical lines through the bottom points 1, 2 and 3 which intersect the just created horizontal line. The user can now measure the three vertical distances b1, b2 and b3 to enter in input for the next addin run.
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