PaulT
Gold Member
OK,
I've finally gotten approval for the final stage of investment in the pole barn - the slab. I intend to do all of the prep work, and have a crew pour and float the slab. I have done some searches, but still have a few questions on the design for the TBN brain trust.
Background:
* The Barn is in upstate NY (cold winters, 42" frost line is code).
* I used a lot of aggregate fill (4" crushed rock with rock dust) to level the lot, but has had almost 3 years to settle, though it has not, and is quite compacted
* Plan to trench the edges down about a foot from the existing gravel level, about 18 inches wide, and use 2 inch insulation to the top of the 2x10 skirting boards.
* Slab will be 6" thick, with wire mesh appropriately supported
* will use foam insulation and vapor barrier under slab
* plan to put radiant heat pex tubing in at time of pour
* Intend to have approach "aprons" in front of main door and side door.
Questions:
1 - how thick should the insulation under the slab be?
2 - How thick should the approach aprons outside the barn doors be?
3 - It has been suggested that, in line with the door openings, I dig a trench below frost line, pour a footer, build a block wall (w/rebar and cement inside the block) and leave a lip on the block wall for the approach aprons to sit on. Is this overkill?
4 - What is the best way to tie the approach aprons into the main slab, if at all, so they float together with the main slab?
Thanks for your help.
I've finally gotten approval for the final stage of investment in the pole barn - the slab. I intend to do all of the prep work, and have a crew pour and float the slab. I have done some searches, but still have a few questions on the design for the TBN brain trust.
Background:
* The Barn is in upstate NY (cold winters, 42" frost line is code).
* I used a lot of aggregate fill (4" crushed rock with rock dust) to level the lot, but has had almost 3 years to settle, though it has not, and is quite compacted
* Plan to trench the edges down about a foot from the existing gravel level, about 18 inches wide, and use 2 inch insulation to the top of the 2x10 skirting boards.
* Slab will be 6" thick, with wire mesh appropriately supported
* will use foam insulation and vapor barrier under slab
* plan to put radiant heat pex tubing in at time of pour
* Intend to have approach "aprons" in front of main door and side door.
Questions:
1 - how thick should the insulation under the slab be?
2 - How thick should the approach aprons outside the barn doors be?
3 - It has been suggested that, in line with the door openings, I dig a trench below frost line, pour a footer, build a block wall (w/rebar and cement inside the block) and leave a lip on the block wall for the approach aprons to sit on. Is this overkill?
4 - What is the best way to tie the approach aprons into the main slab, if at all, so they float together with the main slab?
Thanks for your help.