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bleg for design of pile group

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I have to design a pile group that does not have sufficient overburden to obtain fixity. So it looks as if I'll have to rock socket three (3) feet into bedrock. I was going to use steel H-piles, however if a drilled shaft is required in order to rock socket I'm wondering if I should just drop a rebar cage and concrete in the casing or drop the H-pile in the casing and concrete it.

I'm not really considering cost at this point.

In either case I would prefer to keep a round section to cut down on turbulence in the event of a scour condition.

Any thoughts?

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how deep are you able to go? You might have to just use a shallow foundation?

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I would do that normally but laying back to reach bedrock is a problem. Maybe a braced cut could work but it has to shake out that way between a bunch of other PEs (you know how it is).

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We're going to concrete the H-piles in the rock sockets and then backfill the rest of the casing with sand.

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