 鲜花( 53)  鸡蛋( 0)
|
5# manyu K7 h. ]! B0 I, @/ h5 ?5 {
1 ?& w- q* I) f6 y/ A9 r
j W1 P+ I, M& {6 t) _9 z$ d7 Z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:( ?; Y5 z# }# r+ j
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
& f# O. u+ L* a. P# S, a& _2. supporting beams are a bit too far away from each other.4 ]0 v! Z. ~+ m3 n- |9 {
3. supporting beams are not level due to earth settlement.1 x1 k+ S- E0 x% E" R2 p: q! V
) Z0 l3 i3 t) h6 v; a7 \7 k* o
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.
`( D. A/ r. l, N4 }4 J+ {But anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
|