 鲜花( 53)  鸡蛋( 0)
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5# manyu
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! P% m, V; l7 g4 Y0 \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:3 O6 G# y; P: _2 K7 w
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.& I" |1 }6 _8 h: L" i
2. supporting beams are a bit too far away from each other.
+ q2 g; V$ y* ], L' r3. supporting beams are not level due to earth settlement.
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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.
" X. s% Z9 j( C3 L% S% D& b* DBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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