 鲜花( 53)  鸡蛋( 0)
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% ]7 q/ Z' ^4 s5 t/ c& P# j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:% s5 J/ E$ d7 h' I
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
" B# ?% x/ h/ z/ ]' D5 J7 \3 e" m2. supporting beams are a bit too far away from each other.0 i) E- n+ C% _ z( w* D
3. 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.8 k; h% s" R( M
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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