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Likesdirt t1_jds29b8 wrote

There's concrete in them, at least a little. It flows up the open ended tube or a little was added to the top.

Buy an angle grinder, face shield, and cutting disks. Some grinding wheels too but the disks will do the bulk of the work. A gas powered demo saw would be even better if you can rent one and handle it (they're heavy and dangerous, will cut flesh like a chainsaw).

Metal cutting abrasive disks don't mind cutting some masonry.

Sawzall blade teeth dull immediately in masonry.

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mclovin0541 t1_jdtgi8l wrote

The grinder doesn't care what it cuts and the wheel doesn't get dull. Buy a couple packs of discs and wear a mask for concrete dust. If you really want to go fast, you probably only need to cut the pipes a little over half way then bend back and forth to break them. You can clean up with a grinding wheel. Don't use a demo saw unless you're used to it... It's a lot of power to handle.

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