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| Re: G Train: Present and Future (Opinion Piece) (1149952) | |||
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Re: G Train: Present and Future (Opinion Piece) |
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Posted by Jackson Park B Train on Mon Apr 9 23:17:29 2012, in response to Re: G Train: Present and Future (Opinion Piece), posted by J trainloco on Mon Apr 9 18:34:47 2012. the header like a beam in post and beam buildings eliminates the need for closely spaced vertical supports. the comment about horizontal increase was an imprecise way of suggesting that if for instance one needed to have a 4x12 for the span in question but no more than 8" vertical space one might well use a couple 8x8 bolted together to form a sufficient beam for the span. In all of these cases, the horizontal mem not only supports whatever is above but also ties together the vertical walls or post on which it rests.FWIW, I did work on a remodel where we used trus-joists "R" in order to support a new upper floor solely from the reinforced side walls. They were so new (1979) that the company sent out an engineer to educate/placate the building inspector. I was somewhat dubious on first look, but AFAIK no damage was reported after the Loma Prieta quake a decade later. |
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