EFFECT OT WELD STREGTH REDUCTION FACTOR

Hi everybody,
I am using CAESAR-II, 2013 6.1 version. My understanding on weld strenght reduction factor is to be used in pipe wall thickness calculation.
a. Can anybody explain me the significance of weld strength reduction factor in CAESAR-II. But If we enter the same value from (table 302.3.5,ASME B 31.3) in CAESAR-II how the background calcuation will happen.
b. What calcualtion should be done if circumferential welds are come in between piping which has elevated temp of 742 Deg C.

After enable “Wc” in config set up, I have applied “W” factor in CAESAR – II and I couldn’t identify the change in result.

I have gone through the few posts related to weld strength reduction factor. But I want to have a brief understanding.

Kindly give some suggessions.

Thanking you all,
SRISRI

Srisri

The Codes single “W” Weld Joint Strength Reduction Factor is segregated into two in CAESAR‐II they are – WL & WC   
 Where    WL = Longitudinal Weld Joint Strength Reduction Factor   WC = Circumferential Weld Joint Strength Reduction Factor 

Longitudinal Weld Strength Reduction Factor (WL) is mandatory requirement of ASME B31.3 Code (From 2004 to till date) for pipe thickness calculations (Performed by Material Group).   
WL value is used for the minimum wall thickness calculation only. This minimum thickness is “information only” it affects nothing in CAESAR‐II.

Use of Circumferential Weld Strength Reduction Factor (WC) is mandatory requirement of ASME B31.3 Code 2004 Year and turned the mandatory use of WC in sustained allowable stress to optional (Designer responsibility) from ASME B31.3 Code (From 2008 to till date). 

CHECK:
1. In CAESAR‐II Configuration File  SIFs and Stresses Ignore B31.3 WC factor  False 
2. Check whether CAESAR‐II has material data base of WC values for a material:   

Unrelated to the conversation at hand, but there seems to be a bug in the forum display software that made this conversation a little hard to read. See screen shot.