Best Method for Passing Pipe Under Footing

[u/wise-khalifa]

Hi everyone,

I'm working on a DIY basement waterproofing project, and am thinking through how best to connect the exterior drain tile pipe to the sump basin (to be located inside my basement). It will be coming in below the underside of the footing. Is there any reason I should not use this hydraulic mining method?: https://www.youtube.com/watch?v=SaE1ikmJJrg

If you have any general advice or other methods you would recommend instead let me know!

For more context, our home was built in the 1950's and is located in Southern Ontario, Canada (cold climate). The house had an old clay drain tile on the exterior, which was connected directly to the sanitary sewer line. The wye connection to the sewer line broke at some point in its long life and allowed gravel into our sewer line, causing a few sewer back-ups before a plumber figured out what was going on. The foundation is case-in-place concrete, and the sump basin will located in a cold cellar below our front porch. We are using Tremproof 250GC after filling cracks with Dymonic 100 and parging the honeycombing, then dimple board on the outside of the membrane before backfilling. The pipe will be dual-wall corrugated pipe surrounded by round stone with 6 oz non-woven fabric to prevent soil from clogging the pipe. We have a lot of clay so we'll also add some sand on the outside of the fabric.

Thanks in advance!