Application
Handrail & Post Coring
Coring clean holes for handrail posts, guardrails, and bollard sleeves set into concrete slabs and stairs.
Handrails and guardrails set into concrete need a clean, correctly sized pocket for each post. Core drilling makes those pockets so posts can be grouted or epoxied plumb and to the right embedment — essential for a rail that meets code load requirements and doesn't work loose over time.
Crews we route work to core post holes on the rail layout spacing, at a diameter that gives the right annular space for grout. On stairs and elevated slabs, getting each core plumb and at consistent depth is what makes the finished rail look right and pass inspection.
Coring method
Post pockets are cored with concrete core drilling, sized to the post and grout clearance. Where a core surfaces near a post-tension slab edge, this work follows the same care as anchor bolt coring. Bollard sleeves tie into bollard installation.
Concrete scanning confirms rebar and tendon locations before coring near slab edges and stair stringers.
Practical considerations
- Core diameter gives enough annular space for the post grout to develop hold.
- Cores are kept plumb and to consistent depth for a straight, level rail.
- Wet coring controls silica per OSHA 1926.1153 and keeps finished stairs and floors clean.
- Edge distance near slab edges is checked so the core doesn't spall the edge.
Plumb and consistent
A rail is only as straight as its post pockets — consistent, plumb cores make the finished install look clean and pass inspection.
Handrail coring FAQs
- What size core is needed for a handrail post?
- The core is sized to the post plus enough annular space for grout to develop hold. The rail shop drawings usually specify the pocket size.
- Can you core post holes on stairs?
- Yes. Cores are kept plumb and at consistent depth on treads and landings so the finished rail is straight and level.
- Is coring safe near a slab edge?
- Yes, with proper edge distance and scanning to avoid rebar and tendons and to prevent edge spalling.
- Do you core bollard sleeves too?
- Yes. Bollard sleeve pockets are cored the same way; larger bollard work ties into our bollard installation cutting.
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