 鲜花( 53)  鸡蛋( 0)
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8 F M. h# r, K( c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:
. \# v8 o6 q6 ?$ o* k2 y' d5 p1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.' i' t0 K: N* r# y7 y& w# J* ?: f
2. supporting beams are a bit too far away from each other.; T* b3 Q2 ]9 ]
3. supporting beams are not level due to earth settlement.
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' y- k/ S# X4 P& D: M; k; QFor 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.: D$ h, z, |! U& H M
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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