Thanks for the advice I will keep checking for books. I got the pipe fitters blue book,pg 2 preface and instruction,pg 29 measurements,pg 27 sequence of measurements but cannot find any info for beveling the Branch to get a good fitup on the header

Hello' i am a structural rig welder in southeastern nm and i have an opportunity to weld pipeline the test is going to be a 12"on12" branch and butt i need info on how to bevel the ear and crotch on the branch. The WP will be 6010 root,hot 7010 fill and cap any info will help thank you