Guidance on core drilled posts

[RE1894]

I've been asked to design a balustrade, with core drilled posts into the top of a retaining wall.

I can't find much information regarding how to design the core drilled connection, so would greatly appreciate if somebody could point me in the right direction.

Ideally to Eurocodes if possible, but any guidance is appreciated.

 

[Retrograde]

Refer attached. I take no credit for it - I cannot remember where I got it from but I think it was another Eng-Tips thread.

 

[Tomfh]

I'm not sure there's much point in analysing theoretical triangular elastic stresses in an infinite mass when balustrades are at the edge of a slab or retaining wall. The main issue is usually brittle failure caused by concrete breakout. Also, why is it assuming a "concrete stress block" when the diagram is elastic distribution?

 

[HTURKAK]

You may check the the failure modes described at EC 2-4 (concrete stress , bearing failure , and concrete break out failure ) assuming the spigot of the balustrade is rigid enough to distribute the stresses . An approach could be similar to the Retrograde's attachment but adding the shear force .
The following snippet from PC Handbokk ( Bldg authority )

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