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. ?7 N" S; h8 u! Q% [$ D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:/ X; A9 I# R0 V. G
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.: p! u. Z0 a) D
2. supporting beams are a bit too far away from each other.' X) K$ A/ k# A$ r
3. supporting beams are not level due to earth settlement.
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( Y- Z: y- }2 P' [) Y5 p9 V- DFor 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.
8 U9 [# k' f7 K/ e4 f" r3 P; TBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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