 鲜花( 53)  鸡蛋( 0)
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5# manyu
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; M$ R) s+ _+ X* |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:/ H2 B/ K' g6 A! {+ y. H& k) D
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose. b+ Y" M: M+ _+ R
2. supporting beams are a bit too far away from each other.
6 N% }1 |: _2 U4 [7 {3. supporting beams are not level due to earth settlement.& s7 c. g$ N) e
& j5 F" v- M$ F" h* p2 H2 Y: 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.: t# `2 z( J# W
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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