Paul,

Caesar II has not changed anything on this directive since the original program was released in the DOS version and the Technical Reference Manual does not state anything incorrectly. In fact the manual simply states that checking this box will use the WRC329 equations exactly, but not only for B31.1, B31.3, ASME NC, and ASME ND, but also for additional piping codes not covered by the bulletin. It makes no reference to which tees WRC329 does not apply. For that information you need to read the WRC329 bulletin. WRC329 does not apply to Reinforced Fabricated Tees nor Welding Tees. For all other tee types it will apply.