Excavating a hole in rock

[arkydog]

either buy a backhoe and rent a breaker or pay a back service that can gat a breaker. backbone's are assume in this kind of work when an excavator won't do. excavator should be first choose

 

[MF283]

Back in the day when i was shooting dynamite, shot a hole out right at the house, no problems, a good dynamite person can easily do it.

Ronnie

 

[CobyRupert]

Sometimes, there is no easy way out.

...what they call: "finding yourself between a rock and a hard place."

 

[arkydog]

i worked with one guy that believed that when him and his dad used to build houses, they could dynamite a basement and have all the rock fall into the back of a dump truck.

 

[EddieWalker]

I don't have any experience with large rocks, just in concrete. I've found that I can speed up the demo of larger sections of concrete by drilling holes in it with my SDS Max first, then hitting it with the jack hammer close to those holes to create an opening that I can make bigger and bigger.

 

[bcp]

If the hole can hold rain/melt water when finished, there is a danger the tank can float up out of the hole when you use part of the tank's water.

Bruce

 

[Egon]

What kind of rock and how hard? Is it layered or solid or any other types of breaks?

 

[Cord]

If the hole can hold rain/melt water when finished, there is a danger the tank can float up out of the hole when you use part of the tank's water.

Bruce

Absolutely correct. One of the reason why we want to put it close to the house is that we are planning on putting a covered wood porch over it. This will help keep the rain water out of the hole, but eventually it will fill with ground water. A daylight drain would be ideal, but we'd have to trench under the house. Instead, I'm planning on creating a open sump of some size and then putting a submersible pump in it.

 

[Cord]

What kind of rock and how hard? Is it layered or solid or any other types of breaks?

It's dolomite. Typically with bedrock the upper layer will be fissured and weathered, but this stuff isn't. When I dug the ejector pump pit, I wasn't down a foot before I hit hard rock. The big problem with the breaker is that it wasn't able to displace the rock. I couldn't rattle with the breaker square to the rock. Instead I had to break off pieces.

 

[Cord]

This is the side of the house where the tank is currently (it was set after the photo was taken). The master plan is that the red door with the stoop (but no steps) will be into a screened porch area. The tank would be placed in the hole below the porch.