Greetings,
I would like to add a 25'x40' room that will be Uninhabited/Unoccupied space or storage and other purposes (which I have discussed with the code enforcement office, and they agreed it would be considered as this kind of space) to the house. I would like to use Helical Piers for the foundation, but have a few questions I can't get answers to and before spending money on paying professionals for designing this, I want to make sure I can use them.
First question is, New York State requires an unfinished crawlspace of 12" below any Beams, and 18" below any Floor Joists, so where would the top of the piers have to be? would the top be below ground, and Pressure Treated wood beams span between the piers and a very short wall be built on top of that the floor joists sit on? Or would the top of the piers be just under a beam that the floor joists sit on, and a 12" wall made of pressure treated materials be literally hung underneath the beams, creating this crawlspace? I can find nothing in terms of designing for a crawlspace using helical piers is mentioned.
Second question is this. Can I use Helical piers for the exterior walls of this room, and use concrete piers for the interior piers that support the center beam for supporting the floor joists? The original plan was to have 4' concrete walls for the perimeter of the room, and concrete columns to support the center beam. The helical piers will be replacing that foundation wall. Because of expense, I would rather not use them for the interior piers. Would this be allowed. I can find nothing in the code to answer that question either.
Any help with this would be greatly appreciated.
Thank you in advance.
Ken L.
I would like to add a 25'x40' room that will be Uninhabited/Unoccupied space or storage and other purposes (which I have discussed with the code enforcement office, and they agreed it would be considered as this kind of space) to the house. I would like to use Helical Piers for the foundation, but have a few questions I can't get answers to and before spending money on paying professionals for designing this, I want to make sure I can use them.
First question is, New York State requires an unfinished crawlspace of 12" below any Beams, and 18" below any Floor Joists, so where would the top of the piers have to be? would the top be below ground, and Pressure Treated wood beams span between the piers and a very short wall be built on top of that the floor joists sit on? Or would the top of the piers be just under a beam that the floor joists sit on, and a 12" wall made of pressure treated materials be literally hung underneath the beams, creating this crawlspace? I can find nothing in terms of designing for a crawlspace using helical piers is mentioned.
Second question is this. Can I use Helical piers for the exterior walls of this room, and use concrete piers for the interior piers that support the center beam for supporting the floor joists? The original plan was to have 4' concrete walls for the perimeter of the room, and concrete columns to support the center beam. The helical piers will be replacing that foundation wall. Because of expense, I would rather not use them for the interior piers. Would this be allowed. I can find nothing in the code to answer that question either.
Any help with this would be greatly appreciated.
Thank you in advance.
Ken L.