Question:
From Geoff Golly GGollywtgroupcom
Sent Thursday October 20 2022 624 AM
To DPW DPW INFO DPWINFOdpwlacountygov
Cc CJ Starke CJStarkeWTGroupcom
Subject Altadena California Special Wind Region
Hello
My name is Geoffrey Golly and I am a project engineer for The W T Group located in Palm Deser, California I am working on a residential remodel project in Altadena and came across the city being classified under a special wind region per ASCE 7 16 The wind speed is called out to be 95 mph but I wanted to confirm the actual wind speed that should be used for design If you can help clarify this or provide me with a contact that would be great
Thank you
Answer:
The wind speed for Risk Category II Buildings is 95 mph for exposure C. The wind speed for Risk Category III Buildings is between 100-105 mph (linear interpolation permitted) for exposure C. It was previously determined that the special wind region classification will not trigger a change to the required wind speed used in the area. Please refer to the attached document or Chpt 26 of ASCE Standards 7-16 for more information. Thank you.
From Geoff Golly GGollywtgroupcom
Sent Thursday October 20 2022 624 AM
To DPW DPW INFO DPWINFOdpwlacountygov
Cc CJ Starke CJStarkeWTGroupcom
Subject Altadena California Special Wind Region
Hello
My name is Geoffrey Golly and I am a project engineer for The W T Group located in Palm Deser, California I am working on a residential remodel project in Altadena and came across the city being classified under a special wind region per ASCE 7 16 The wind speed is called out to be 95 mph but I wanted to confirm the actual wind speed that should be used for design If you can help clarify this or provide me with a contact that would be great
Thank you
Answer:
The wind speed for Risk Category II Buildings is 95 mph for exposure C. The wind speed for Risk Category III Buildings is between 100-105 mph (linear interpolation permitted) for exposure C. It was previously determined that the special wind region classification will not trigger a change to the required wind speed used in the area. Please refer to the attached document or Chpt 26 of ASCE Standards 7-16 for more information. Thank you.