 鲜花( 53)  鸡蛋( 0)
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5# manyu / G( @* C( e A2 f# B) B# N$ ?
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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:
& ?0 @# }! G! f$ O3 h0 m$ z1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
# v/ u: ^( p( S7 e: z2. supporting beams are a bit too far away from each other./ U* z6 D; J [- I
3. supporting beams are not level due to earth settlement., u7 f1 l7 C% g: t6 \7 z b
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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.
6 C! W) `1 k: o$ {6 ^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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