floor joists and they sit on bearers
Structural timbers are those timbers used in the construction of a building that are "load bearing". They are the timbers placed under stress by and that support the weight of the building.
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Subflooring is the wood on which the visible floor is lain. A rotted wood subflooring is when the subfloor timbers have been exposed to water and have begun to rot, thus undermining the floor as a whole. The floor will have to be removed and the subfloor replaced.
Its called the Frenulum or AKA the Tongue Web.
The protector is referred to as a Stove Board.
mid-ocean ridges tey are under water.
Nash Timbers was created in 2003.
Portland Timbers was created in 2009.
PLantation timbers are timbers from planted forests, that is humand planted them Old growth forests are the natural ones.
I'm assuming by 20' circle you mean 20' diameter. And I'm assuming only one layer of timbers. 3.14 x 20 = 63 feet of timbers needed / 8 foot long timbers = 8 timbers, for a 20' radius circle, double the number of timbers, and for each row of timbers increase the number of timbers accordingly. The closer to circular you want you'll need to cut the timbers shorter. 8 timbers will make an octagon (like a stop sign)
nothing :D
Guess - unlagged hot pipes under the floor. Or under-floor heating!!