Game Changer Heat & A/C In the Shop

[ebinmaine 77,059]

18 minutes ago, WHX?? said:

Yeah I guess I forget that. In the plow fields we turn over very large rocks that used to be 10 ft down and now at the surface. 

 

Back in 2016 (?) Trina and I traveled to the Midwest to visit an old friend of hers. 

We flew to Minn/St. Paul and she drove to Mandan ND. 

Having both been born n raised in New England we were FLABBERGASTED by the lack of rocks out there. 

Every several hundred feet there would be a pile. Some that would fit in a pickup truck. Most a little larger. 

The biggest pile we saw was about half the size of our ranch style house. And that was HUGE to them.  

 

 

 

 

[Handy Don 15,748]

2 hours ago, ebinmaine said:

born n raised in New England we were FLABBERGASTED by the lack of rocks out there. 

If only we could find a way to profitably export rocks! 

[lynnmor 8,543]

7 minutes ago, Handy Don said:

If only we could find a way to profitably export rocks! 

But Maine would disappear under the sea. 

[Handy Don 15,748]

2 minutes ago, lynnmor said:

But Maine would disappear under the sea. 

Valid point, sir.

[ebinmaine 77,059]

14 minutes ago, lynnmor said:

But Maine would disappear under the sea. 

 

11 minutes ago, Handy Don said:

Valid point, sir.

That's the exact phrase I was about to answer

[Blue Chips 647]

7 hours ago, ebinmaine said:

Remember the mountain. I don't live on flat ground like most of you do. I literally live on top of a pile of Boulders and they are CONSTANTLY MOVING.

 

 

7 hours ago, ebinmaine said:

In my area you cannot dig into the land for the installation.

 

Likewise, where we are, it wouldn't be easy to dig very far into the ground, as ledge is protruding from many places in our back yard. 

 

Relating to the thread topic, the type of subsurface under a shop/garage/home can have an effect on one's heating and cooling costs. We've pulled some big boulders out here and there, but for the most part, our land is solid ledge, with areas of shallow soil and clay. Our current house was built directly on solid ledge, and the floor of the basement is the ledge itself. Even though the basement is not heated, and there is an open vent to the outside (our rather old boiler draws its air from the basement, which draws outside air into the basement), the ledge acts as a massive, high-density heat sink that helps keep the basement much cooler in the summer and warmer in the winter than if the floor was just typical concrete over gravel and deep soil. If/when we replace the boiler with a more efficient one that uses outside air for combustion, the basement will be even cooler in the summer and warmer in the winter than it is now.

 

Likewise, the foundation of our new garage was poured directly on ledge, which made it a challenge to fit the forms to the rock. As an aside (pardon any interruption), I made a custom scribing tool to mark the forms accurately. Here are a few photos of the forms for the footings that went under the foundation walls of the new garage.

 

 

Examples of footing forms scribed to fit the convolutions in the rock:

 

 

 

Here's the garage foundation after pouring the foundation walls on top of the concrete footings, installing interior and exterior perimeter drains, backfilling, insulating the inside of the foundation walls, and filling with compacted crushed stone:

 

 

Ledge/bedrock extends all the way down to our shore on the river (photo taken about mid-tide).

 

 

 

 

 

 

Edited 2 hours ago by Blue Chips

[ebinmaine 77,059]

7 minutes ago, Blue Chips said:

the foundation of our new garage was poured directly on ledge, which made it a challenge to fit the forms to the rock. As an aside (pardon any interruption), 

 

 

Not to get too far off topic but just out of curiosity. Were you required to have the bottom of your concrete a certain amount of inches below the surface?

 

We were told before we started the barn project that the final ground surface would need to be a minimum 36 inches above the bottom of any concrete.

Bed ledge or not.

 

 

 

[Blue Chips 647]

14 minutes ago, ebinmaine said:

Not to get too far off topic but just out of curiosity. Were you required to have the bottom of your concrete a certain amount of inches below the surface?

We were told before we started the barn project that the final ground surface would need to be a minimum 36 inches above the bottom of any concrete.

Bed ledge or not.

 

If you're talking about the garage foundation, if I recall, since 100% of the footing was poured directly on solid ledge, the freeze depth requirements didn't apply, and I cleared it with the building inspector prior to pouring. He was happy with the whole project. 

 

BTW, @ebinmaine, I don't know what he would have said if it was only partially on ledge and partially on soil.

 

 

Edited 3 hours ago by Blue Chips

[Handy Don 15,748]

Friends thought I was wasting money to fully seal and insulate our below-grade basement--walls and most of the floor--at the time of construction. I has made it much more livable in the play area and in my shop.

Switching to sealed combustion for heat/hot water also made a big difference.