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% j8 E$ K" J6 E D1 ?- ]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:# k5 }( E$ i" }
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
. U) k8 H( t" `' \6 D4 x9 U2. supporting beams are a bit too far away from each other.# q2 Y( X& N/ {6 W# u
3. supporting beams are not level due to earth settlement.
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9 y0 X: q. I, ~- a$ r$ B9 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.) z+ N! H$ n2 U7 P
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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