@unknownuser said:
Also, you may want to consider core drilling @ the table and seat bases.(& don't assume clear drilling) ..........otherwise...... ... ...... ......
@unknownuser said:
hmm. i'm not sure i quite follow what you're saying? what do you mean?
Jeff,
I used to do a fair bit of commercial work (restaurant/bar/etc.).
Often the tables and chairs (similar to your design) were installed using a core drill and grout.
You simply drill the appropriate size hole in the conc. slab, and set the round base in the hole and grout.(brace plumb/level)
Obviously you have to be cautious of what is "in" the slab, and or, the type of slab. (post tension?)
So rather than rely on bolts (expoxy set?/wedge anchors?) as in your design, core drilling would potentially be a stronger/tamper proof option.
Just My 2ยข
Charlie
Edit:
PS.......you may want to explore buying the bases instead of custom fab. (Outwater Plastics?)