|Name||10 in. Dia. x 1 in. Composite Post Foundation||12 in. Dia x 1.5 in. 2.1 lb Composite Post Foundation||12 in. x 8 in. x 12 in. Concrete Patio Pier Block|
|Block Type||Deck Block||Deck Block||Deck Block|
|View Product||View Product||View Product|
That depends on the length of each side and the size of your joists e.g. 2x6, 2x8, 2x10, 2x12. Suppose it is 9' x 10'. You'll need 4 for the corners and assuming one for each center that's another 4 for a total of 8.
Probably 15-20 lbs each. 60 lbs must be an error.
2,000 psi compression
Depends on ground level and the length of your post, but the block is 8 inches in height.
Need corner posts in concrete, no but you can. If your worried about high winds anchor the deck which like posts in concrete defeats the ability for these to move with the dirt under them. https://www.homedepot.com/p/ShelterLogic-30-in-Earth-Anchor-Set-4-Piece-w-Heavy-Duty-Corrosion-Resistant-Steel-Construction-and-Spinnable-Corkscrew-Design-10075/202719050?MERCH=REC-_-searchViewed-_-NA-_-202719050-_-N
Any 2x? will work in the cross hatches, center fits a 4x4 on end.
Depends on whats inside. They are rated for 2,000 psi. each. I have these under my 30x30x10 shop.
No, they're meant for 4x4 to rest on it for e.g. a deck.
Would not recommend for use. Not designed for stacking. If you need heighth, a 4x4 post will sit securely in the middle of the cross section.