 鲜花( 53)  鸡蛋( 0)
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$ N ^$ |% s/ o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:" q% o3 T$ z; ] V
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
9 E$ C# Y& H% V( d7 h1 J8 ~' I. ?2. supporting beams are a bit too far away from each other.9 P5 c8 m9 E3 w/ P/ P0 N3 M
3. supporting beams are not level due to earth settlement.0 [7 y9 T0 P. A
) X& e6 _" N8 yFor 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.
! c& S0 n9 |3 P6 z( w& P% RBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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