Concrete Forming in the intertidal zone

[Max123]

I know you're deep in now, but I think Helical piles may have been a good option.

A helical pile, in a boulder field?

 

[eriks]

Can you drill a couple fiberglass rebar pins to lock it in place? Shouldn't be that hard to align. That'll keep it from sliding. Or some stainless angles after the fact.

Sorry to hear your news. I was in the same boat a few years ago but was lucky how it worked out. Thinking about you and hoping for the best.

 

[eriks]

I know you're deep in now, but I think Helical piles may have been a good option.

The thread started because I was quoted $25K per screw pile and just don’t have that type of cash kicking around.

 

[Bearded wonder]

I wouldn’t wet set the block into grout as the blocks are extremely heavy and will squeeze out most of the grout. For most grouts you need at least 3/4” of space. If not it will crack. If you are worried about the blocks rocking I would shim and grout.
Maybe start with 3/4” stainless nuts as a spacer and shim with ss metal strips. Build a quick frame around the blocks and pour flowable grout. Pretty easy.
Or place the blocks and use Sikadur -53CA.

Sikadur®-53 CA

Sikadur®-53 CA is a two-component structural grout based on epoxy resin, designed for injection, anchoring, and seating applications and for use at temperatures between 5 and 30 °C.

can.sika.com

Sika makes great products don’t use PL. White Cap carries lots of concrete products.