I’ve fielded a few questions asking if the bar framing can support a 300 lbs slab of granite.
The short answer is YES!
The long answer is that the compressive force that a single 2×4 pine board can handle is quite amazing.
The shorter, the stronger and of course the longer the weaker. Long boards tend to bow out and snap at failure.
Here is a quick example of length vs. strength.
Length of board
approximate compressive force to failure
2 feet or less in length
~300 lbs – border line code
10 feet +
less than code would allow
Doubling up boards certainly helps. If you quickly study our plans, you’ll find they could support literally tons of weight. So, they’ll easily support granite, concrete and dancin’ girls!
This topic was modified 2 years, 6 months ago by bpwdmin.
If I go with a granite top do I still need 55, 56 73, 74 and 75 or do I just place it straight on the the 2x4s do I need a 3 layer bar top or just OSB for the granite to sit on? I am not doing a bar rail.
This reply was modified 2 years, 6 months ago by bpwdmin.