What are the rules there about drilling beams, it wouldn't happen here.
Well, change of plans. Trying to decide where to bore, once through I'm into a very crowded are with lots of pipes (Including, as it's right near the boiler, a lot of pipe leading to radiators - plumbed in inexpertly by me 30 years ago). No way to lead to where I wanted to tap in to a 2" line without going uphill somewhere.
That leaves where the 3" drain/sewer pipe leads out through the wall to outdoors (sewer line), and as the house originally did not have a basement, not all that far below grade. Standing in the basement, the line turns 90 degrees and leaves the house horizontally at chest level. Enough connections/fittings so that tapping into THAT line is tough.
I was shopping on-line, saw "Saddle Tees" to tap into a 3" line. Oddly, the descriptions kept saying for 3" or 4" lines, how could that be. Just went to Lowe's and Home Depot, which I did not want to do. Turns out those were not in stock anyway, I wanted to measure to ensure fit. No go. I liked the ones that you glued in place PLUS U-bolts to secure.
Well, I decided on the scary way - scary for me. Bought a 3"x3"x2" Tee, with the 2" entry slanted. I have barely enough to cut into the vertical 3" line between two fittings, with about an inch left over. I have ONE chance to get this right.
Working up enough nerve to cut. If I get it right, the rest of the run is simpler, I go below that beam and have plenty of room for the correct "drop" of the run. Wish me luck!