|Forum topic by Charlie||posted 493 days ago||1093 views||0 times favorited||6 replies|
493 days ago
I have to make a 12’ x 10’ frame out of MCA pressure treated 4×6 standing “on edge” (4” side is bottom and top)
I want to keep the corners together pretty well. Should I half-lap them and put a stainless steel lag in them?
The frame is basically a foundation for a garden shed that will get a crushed stone floor, later to be covered with concrete pavers. So the corners will also have walls standing on them, the bottom plate of which can act as a tie plate, This will all be sitting on a bed of compacted gravel about 8 inches deep and the PT 4×6s will be above grade so I think they’ll last as they’ll never be in contact with dirt, but I really want to have a decently tight corner.
I was also thinking of “painting” the lap joint with roofing cement because of the cuts.
and before you ask, no, I can’t just do this like a pole barn because I can get holes anywhere near deep enough due to tree root and big boulders in the ground. I can only get down about 1 to 2 feet more than the 4 inches I’ve already excavated for gravel. And the quote for a concrete pad for this was $825 (due to it being a small job and affected by minimum trucking charges, etc).