Securing a foundation to a solid granite ledge
In short: This video demonstrates the specialized process of pinning concrete footings directly into extensive granite rock. Watch as professionals drill into the ledge and use rebar to create a permanent connection for a new addition.
In this demonstration, Charlie and Tom Silva tackle the challenge of securing a house addition to a granite ledge. The project involves pinning the footings for a mudroom and a garage to the rock surface. To achieve this, the team drills into the granite to accommodate rebar and uses scribing techniques to ensure the forms fit the irregular stone accurately.
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Sources
- Summary by Intellect · source: How to Pin Foundation Footings to a Granite Ledge | This Old House
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