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5# manyu
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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: ], u! E' g/ ^" Q+ H
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
! ?) W v8 E9 U$ e5 f2. supporting beams are a bit too far away from each other.
: W4 i/ H! q7 l6 z4 f. K3. supporting beams are not level due to earth settlement.
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. O7 P* I& q8 a0 R) VFor 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* J# f- n" C" P' [+ X2 OBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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