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Hurricane Irma - After Action Report
On Mon, 18 Sep 2017 07:34:59 -0400, "Mr. Luddite"
wrote: On 9/18/2017 1:44 AM, wrote: The northern building code would not even protect most houses from a strong Cat 1 or a 2. When I was there they built to 80 mph but I assume they may have upped that a little. Even so there are plenty of 30+ year old buildings built to that code. There was absolutely zero uplift protection beyond gravity. You were not even required to put nuts on the J bolts in block headers when you mounted the sill plate for the stick built parts. There is also no tie beam and no steel in the block. They didn't even have steel in the footer. The J bolt is just mortared into one of the block cores. We have 4 #5 rebars in the tie beam and the top 16" is solid concrete, that tie beam is doweled with a #5 every 4 feet and at every opening in a grouted cell and the "hooks", top and bottom get tied to the tie beam steel and the footer steel. Your post caused me to think of the old farmhouse that we used to own and had my mother living in. I doubt any codes existed when it and the accompanying barn was built in 1800. All the support beams and rafters in the barn where pegged together ... no nails or screws. The vertical beams where the trunks from large cedar trees. We had a bulding preservation expert who takes care of the buildings in "Plimouth Plantation" (a local tourist attraction in Plymouth) visit us and he explained to me that back in those days the barn was built like the upside-down hull of a wooden ship, mainly due to the early ship building history of the area. We had the roof replaced on both the house and barn and when they tore off the old shingles there was no plywood like you would expect to see. The roof consisted of wood planks instead, with huge gaps between the planks in many places. Amazing that it never leaked. That old house and barn has withstood many a hurricane, blizzards and storms with nothing close to meeting modern building codes. If everything was pegged floor to roof peak it might come close to code, particularly if the uprights were buried deep enough in the ground. |
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