几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量

几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 (http://www.dimcax.com/hust/index.php)
-   产品功能分析 (http://www.dimcax.com/hust/forumdisplay.php?f=10)
-   -   ibc asce overturning factor of safety (http://www.dimcax.com/hust/showthread.php?t=25483)

huangyhg 2009-09-09 06:35 PM

ibc asce overturning factor of safety
 
ibc & asce overturning factor of safety
i have reviewed the previous threads on this subject (all regarding ubc) and wasn't able to find the answer for the ibc specifically.
is there a recommended minimum factor of safety for foundations subject to wind overturning (governed by the ibc)? i cannot find anything in ibc, chapter 18. in asce 7-98, one of the basic load combos is 0.6+ w. is this meant to govern overturning (fs = 1/0.6 = 1.67)?
i have always used fs = 1.5.
can anyone refer me to the proper section of ibc or asce that spells this out?
ibc 2000 p.313 sec.1610.2 retaining walls: "retaining walls shall be designed for a safety factor of 1.5 against lateral sliding and overturning."
i am a little surprised to see 1.5 fs for both overturning and sliding. i am used to using 2.0 for overturning, 1.5 for sliding and 1.5 for overturning with wind.


所有的时间均为北京时间。 现在的时间是 10:47 AM.