 鲜花( 53)  鸡蛋( 0)
|
5# manyu " Q3 t* h* C) z# x
3 E6 f% |; k0 i/ G
9 Z" ~. j# q, J7 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:+ Y: t# R2 U! o. u( O5 S
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.5 l9 e. ]( i, u3 m. G5 j
2. supporting beams are a bit too far away from each other.0 s1 p2 m5 [" m. v/ k& ^
3. supporting beams are not level due to earth settlement.$ u d) ]3 a J) p
* i2 F! C. B5 l% v# ]! m
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.
' m- Z2 v* K% W uBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
|