Can bored piers be used alongside a waffle slab?

Yes — this combination is used where a site’s soil conditions call for both a waffle slab’s flexibility for surface soil movement and additional deep support from bored piers at specific points, such as areas with variable soil or particularly challenging conditions.

This isn’t a standard default combination applied universally — it’s a genuine engineering response to specific site conditions identified in your soil report, adding real cost and complexity beyond a standard waffle slab.

Your engineer determines whether this combination is genuinely necessary for your site based on the actual soil assessment, not as a general precaution applied regardless of what your specific conditions call for.

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