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0 _2 }* N8 {2 V' g& t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:+ v! k5 C+ j4 N2 ]" n7 a8 N
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.- `! `. b. D- a- i
2. supporting beams are a bit too far away from each other.
; y$ |- ~$ q9 I" p. ^' J3. supporting beams are not level due to earth settlement.' I7 ?: g2 D( J. Q
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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.
! Y& O r) v* e; R: [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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