Page Comparison

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Eriksson Culvert uses the internal forces from both analyses to develop unfactored EQ min/max envelopes for every member in the structure. The considered cases to develop these envelopes are:

1. Results from the racking analysis

2. Results from the vertical analysis

3. Racking + vertical analysis results

Users have the option of determining how ‘(3) Racking + vertical analysis results’ are calculated, by either of the following combinations:

1. 1.

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1. 0 / 1.0, which includes:

   1. 1.0 H + 1.0 V

   2. -1.0 H - 1.0 V

   3. -1.0 H + 1.0 V

   4. 1.0 H - 1.0 V

2. 0.3 / 1.0, which includes:

   1. 0.3 H + 1.0 V

   2. -0.3 H - 1.0 V

   3. -0.3 H + 1.0 V

   4. 0.3 H - 1.0 V

   5. 1.0 H + 0.3 V

   6. -1.0 H - 0.3 V

   7. -1.0 H + 0.3 V

   8. 1.0 H - 0.3 V

These unfactored forces are then applied in the LRFD extreme event I load combination:

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