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5# manyu
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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:
5 `: r$ _" w5 }) J4 N3 h/ Y0 N1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
: n# h$ c g. F" T; ~2. supporting beams are a bit too far away from each other.
/ |% {5 F% [% |1 Z3. supporting beams are not level due to earth settlement.
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# e4 m6 Q" B5 [3 `" n# QFor 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.
# y0 V" Q" a: }7 f2 ]/ s4 H# UBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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