Brian Curry's Activities

Leap Bridge Steel - bearing to bearing length values

Brian Curry — Thu, 09 Mar 2023 16:43:39 GMT

After exporting information from an OBM file to LBS, I opened the Member Definition box.. When i looked at the graphic view of the girder, it did not seem to show or calculate the bearing to bearing length correctly for end spans of continuous units. The values dimensioned along the top flange are correct for the end of girder to CL bearing dimension. The bearing to bearing dimension line does not align with the center support, which and reports an unexpected value.

Span 1

Supportline to End of girder = 0.417 ft

End of girder to CL bearing = 0.917 ft

Expected Value = 125.189 - 0.917 = 124.272 ft

LBS Value = 125.189 - 0.917 + 0.417 = 124.689 ft

Span 2

Supportline to End of girder = 0.417 ft

End of girder to CL bearing = 0.917 ft

Expected Value = 167.004 - 0.917 = 166.087 ft

LBS Value = 167.004 - 0.917 + 0.417 = 166.504 ft

These values are imported from OBM. the Help menu does not specifically define the "left/right" overhang values.

The location of the centerline of bearing should be at the interface of the "red" and "yellow" webs. Instead of being at the support, the dimensions are shown 0.417' beyond

Is there a graphical or calculation discrepancy in the Member Definition dialog box when showing the end span Bearing to Bearing distances in continuous units? Also, since the "Left/Right Overhangs" are not defined in the help contents, can they be added in a future update?

Barrier Alignments with Angle Changes

Brian Curry — Tue, 24 Jan 2023 16:06:55 GMT

I have a multi-span bridge that requires a barrier rail transition to an adjacent span that has a larger deck width than the preceding span. I used the horizontal/complex geometry/complex by PI to draw the alignment for the barrier to follow. I tried to use the alignment to guide the location of the barrier, but it introduced unwanted curves in the barrier, which do not follow my custom alignment. How can I force the barrier to follow my alignment without the curves being present? Please see below. I would like the barrier to follow the red lines shown under the grey barrier lines. The other set of red lines are for another barrier to be placed when this matter is resolved.

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Tue, 24 Jan 2023 05:41:19 GMT

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