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Differing Fv values between Design Codes

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CaliEng

Structural
Feb 14, 2020
49
The values listed in ASCE 7-16 11.4-2 are slightly different than those listed in API650 (or AWWA D-100). How do you reconcile the difference here? Do reference codes override?
For instance, in ASCE 7-16, site Class D Fv = [2.4,2.2,2.0,1.9,1.8]
While in API650-e13(or D100), Site Class D, Fv = [2.4,2.0,1.8,1.6,1.5]
 
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Site class scaling factors have changed somewhat over the years. The 2016 numbers are slightly different than the previous ASCE rev. The other standards have older values.

It's likely justifiably to use either the values in the current ASCE or the values in the current industry specific code as long as you don't go around cherry picking clauses. If you're promising compliance with one of the codes, make sure you meet or exceed the values that code uses.

 


If you look ASCE 7-10 ( Table 11.4-2 Site Coefficient, Fv ) The values listed in are the same listed in API650 .
Copy and paste of Table 11.4-2 Site Coefficient, Fv for site class D =2.4 ,2.0 ,1.8 , 1.6 ,1.5.
Moreover if you look API STANDARD 650 (13th edition , MARCH 2020 ), The normative references , ASCE Standard 7-10, Minimum Design Loads for Buildings and Other Structures.

Apparently API 650 committee updating ASCE loading data more then 10 years later.




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