Enough to raise the temp of 2.5 litres of water by one degree C in one second. So it could be boiling in less than 2 minutes. Wood has a much lower specific heat than water so in theory it could reach burning temp (232C) in a similar time (if it were pressed up close to the concrete). |
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Nick |
Thank you. A clear and helpful answer. | ||||||||||||||
onemanband |
Building regs for a fireplace hearth are min 125mm thick concrete with a 50mm air gap(to combustable material), or 240mm with no air gap.
So yeh 5 inches of concrete slab probably will get hot on the underside. |
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Nick |
Well, watch this space with interest. I hope all will be well.
Hope, of course, is not a strategy. |