Kalarix OP t1_jeazvi0 wrote on March 30, 2023 at 6:26 PM

Reply to comment by allangee in How do I backfill a trench beneath a sidewalk? by Kalarix

Correct, it it's a poured sidewalk and a 4" drainage line. Thanks for the reassurance and recommendation.

allangee t1_jeb0a6k wrote on March 30, 2023 at 6:29 PM

Depending on your soil conditions, you can possibly notch the end of 4" pipe and twist/drill it through under the walk, sucking sand/gravel out with a shop vac.

Kalarix OP t1_jeb1xnv wrote on March 30, 2023 at 6:39 PM

I can hope they put a decent base down under it, but other areas I've hit clay pretty early unfortunately

junkdumper t1_jecxirb wrote on March 31, 2023 at 2:28 AM

Pressure washer wand might help cut a tunnel

Kalarix OP t1_jed7l79 wrote on March 31, 2023 at 3:55 AM

I’ll give that a try, thanks