Ask Your Question

Angie's List Answers is the trusted spot to ask home improvement and health questions and get answers from service companies, health providers and consumers. For ratings and reviews on companies in your area, search Angie's List.

Top 30 Days Experts
Rank Leader Points*
1 kstreett 240
2 Guest_9020487 110
3 Guest_9190926 105
4 GoldenKid 100
5 ahowell 95
6 KnowledgeBase 95
7 skbloom 80
8 Guest_98024861 70
9 Guest_9311297 70
10 Guest_9400529 70

*Updates every 4 hours

Browse Projects By Category

Question DetailsAsked on 5/30/2017

Using a small excavator with a hammer to remove a granite ledge 10ft close to a house can dame the foundation?

Installing underground tank

Do you have the same question? Follow this Question

1 Answer


I don't understand why you are expensively removing rock to bury a tank (unless this is just one small piece of bedrock or large boulder in otherwise decently excavated material) - unless your area prohibits above-ground tanks (which can be enclosed in a decorative lattice or trellis enclosure or such), but I would have no concern (except as noted below) at all 10 feet away, and even within about 2-3 feet. Closer than that I would be looking at maybe requiring special care.

One caveat - I would require plywood or cardboard shielding of any windows or air conditioner condensor coil/fan if within less than about 10 feet horizontally and not more than about 5 feet vertically above the hammering location, as protection against damage by flying chips. Commonly just by (making sure A/C is off) just leaning some plywood against it or even a tarp tightly pulled over it to repel chips - you are not looking at large pieces, typically just pebble sized and small unless you are within 1-2 feet of the hammer.

One other exception - if you have a mortared stone foundation and it is in poor condition (tilting or mortar deteriorated) then I would not use a mobile equipment hammer closer than about 5 feet - for that situation I would require hand-held jackhammering.

Answered 3 years ago by LCD

Related Questions

Terms Of Use
Privacy Policy