How far apart should concrete piers be for a deck?

Herein, how far apart should concrete deck blocks be?

Space four interior blocks 2 feet apartfrom one another on each trench line. Level the interiorblocks to your corner blocks. You will have twoblocks between your horizontal corners and threeblocks between your vertical corners.

Beside above, how many posts do I need for a 10x10 deck? 10x10 deck You should really use 2x8's or 2x10's. For a10x10 deck (small) - you really only need 4posts, but you can do more if you're a glutton forpunishment. If you cantilver the deck 2 feet on all foursides then you only have 6 foot spans between yourposts.

Also to know, how many posts do I need for a 10x12 deck?

The shorter sides—in this case, the 8-footside—will have 4-feet of distance between deck posts.The larger 12-foot side will have a post spacing of 6 feetat a minimum code requirement. That makes a total of eightposts that need to be installed on this average sizedeck.

Can I use deck pier blocks instead of footings?

A deck pier block is in many ways just asimplified version of a “precast foundation”, afoundation type recognized by building codes. They're subject toall of the same requirements as a typical footing,regardless of not being cast-in-place. The small bearing area ofpier blocks is limited in supporting much load.