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5 J0 M+ c" L! g2 G w$ O- w找回以前的貼子,對我來說也不容易,還是簡單再說一遍好了 Possible causes are:
. w' D7 D# r) f2 o/ x) }1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose." X3 b: U" d( }% h) p
2. supporting beams are a bit too far away from each other.
{2 Z" m; ?% a# l+ W1 G& A; M) M3. supporting beams are not level due to earth settlement.
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For 2, you may need someone with engineering knowledge to find out, but there should be a building code governing the span distance. For 3, you can go down the basement to do a visual check yourself.& v# m6 @; l1 N5 }, O
But anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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