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' c# s. C( @0 e& A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:
8 t; }6 d/ R3 _; y4 V: T4 M" p1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
# `4 S, H5 y# r( n: c2 @2. supporting beams are a bit too far away from each other.
- j% Z+ o- x! j" z3. supporting beams are not level due to earth settlement.
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7 t7 |- l! @! k% _4 y: 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.4 B5 }' n, [0 x( F0 B
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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