To create a stub-in branch aligned with the bottom of pipe

1. In the drawing, select a pipe.
2. Near the middle of the pipe, click the Continuation grip.
3. On the ribbon, click Home tab Part Insertion panel Pipe Size list.
4. In the size list, click a smaller size (for example: 1") for the branch.
5. If stub-in mode is not on, enter ST (STub-in).
6. Enter T (connectionoffseT).
7. Enter B (Bottomtangent).
8. In the drawing, click to specify the next point of the branch.
   
9. Press ENTER to finish routing pipe.