1.The exposure in the Wind drift case and Wind design case changes from exposure C to exposure B. Any reason for this change?
2. I am getting different drift ratio for a building using ASCE7-05 wind load and direct analysis ASCE 7-16 wind load case as there is 0.6 factor between the two wind load cases. Am I missing something in determining drift for a building using Direct analysis method? Drift result in ASCE 7-16 direct analysis is roughly around 1.67 times the drift result obtained using ASCE7-05 code.
1. No reason, just a screen grab.
2. Wind methodology changed between 2005 and 2010 ASCE codes. The wind speed to use was changed as well as the recommended load combinations.
Using a reduced load factor in your combinations is what I would recommend. The program has load combination generation templates for this purpose. For example: