I model a set of Unreinforced/Welding Tee (equal, reducing d/D > = and < 0.5).
I found no differences when selecting the differents options (B31.1 pre/post 1980, Schneider, ASME III and WRC 329) in "Reduced Intersection".
If I select USE SCHNEIDER = TRUE there is no differences with default (FALSE).
If I select USE WRC 329 = TRUE, I should found no differences excepted for equal Tee as per CAESAR Help: "Activates the WRC329 guidelines for all intersections, not just for reduced intersections". But all reducing or not Tees SIF are changed!

I haven't yet read the relevant codes but it seems strange, isnt'it?

CAESAR 6.10
16''STD x 16'' STD (Unreinforced - Welding)
16''STD x 12''STD (Unreinforced - Welding)
16''STD x 8''STD (Unreinforced - Welding)
16''STD x 4''STD (Unreinforced - Weldolet)

I guess you missed to error check the run after you altered the config file.

You'll see the change.

Whenever you alter the config file, do remember to error check it for the changes to be effective.

Hope it works.

Silly me, I made a mistake in my model.

AnyWay here are my results:
- "Use Schneider"= FALSE, "Use WRC 329"=FALSE and Selected Reduced Intersection = B31.1 (Post 1980) & "Use Schneider"= FALSE, "Use WRC 329"=FALSE and Selected Reduced Intersection = SCHNEIDER gives the same results!

- "Use Schneider" = TRUE, "Use WRC329"=FALSE, Reduced Intersection = B31.1 (Post 1980) & "Use Schneider" = FALSE, "Use WRC329"=FALSE, Reduced Intersection = SCHNEIDER don't give the same results for Unreinforced Tee 16''x12'' and 16''x8''. The CAESAR's HELP says: Has the same effect as Use Schneider... but it's seems False!

- "Use Schneider" = TRUE, "Use WRC329"=TRUE, Reduced Intersection = B31.1 (Post 1980) & "Use Schneider" = FALSE, "Use WRC329"=TRUE, Reduced Intersection = B31.1 (Post 1980) gives the same results even if it's not conservative with "Use Schneider" = TRUE, "Use WRC329"=FALSE, Reduced Intersection = B31.1 (Post 1980). What CAESAR use when both "Use Schneider" and "Use WRC" is set at TRUE?

- Here, http://65.57.255.42/ubbthreads/ubbthreads.php?ubb=showflat&Number=12807, is written: WRC329 does not apply to Reinforced Fabricated Tees nor Welding Tees. but it change SIF values for my welding Tees when "USE WRC329"=TRUE or reduced intersection = "WRC 329".