In article ,
says...

http://tinyurl.com/4ct3fcl


Beams on the deck are attached to the 6x6 posts with galvanized carriage
bolts, washers and nuts.

To avoid splitting the vinyl sleeves, the first step is to drill a hole
in the sleeve and then drill through the sleeve and through the post.
The bolt is pushed through from the other side of the post, and then the
nut is tightened up against the washer with a wrench.

I know several posters here are "enjoying" these photos, and several
others are ****ed off by them. Thank you, all! :)

Wow, truly amazing. That contractor you hired did a fairly nice job.