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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:% v) l8 B s' E* E+ e
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose. T% W' p" a9 n7 z
2. supporting beams are a bit too far away from each other.- w* b/ |4 \2 a( ]5 g/ B
3. supporting beams are not level due to earth settlement.+ {+ i: T$ ]- ?! R' o
% s6 b" K3 u+ p5 Y! WFor 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. 1 O: y+ t. V4 n2 z# h L2 lBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time.
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If the problem is real serious and your builder refuses to fix it, you may consider to hire a 3rd party professional (engineering co) to look at it and write up a report for you, but this will cost you money. OR % P- r1 A" [9 Y5 s( xTry the Troubles Shooter (TV media), they will look into it and make it public on tv if it is really the builder's fault.
1, TAKE VIDEO;; d" ?( i/ Q* ^. Z
2, WRITE FORMAL LETTER TO BUILDER AND SAK THEM WRITE DOWN FOR YOU. 3 H1 V: _4 ~# p白纸黑字,谁都受不了。ASK THIS BUILDER WRITE DOWN "过一段时间(也许6个月)will set down". : N- A+ z) ^+ {2 J" O3, THEN YOU KNOW WHAT IS HAPPENNING.