 鲜花( 53)  鸡蛋( 0)
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5# manyu
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0 x) t: w6 z1 C: b" z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:- S6 q1 w: f8 w0 \5 C, c0 R% `5 A
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
M" ?$ S1 f" F- M' D ]& _2 ^2. supporting beams are a bit too far away from each other.4 J/ p! ~+ w, }
3. 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.
3 ~9 d+ Z0 |. ~1 I# wBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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