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    If your spa is ever used by kids, I would suggest...

    If your spa is ever used by kids, I would suggest placing the disconnect low enough to be easily used by the youngest---if Mom gets her hair caught in the suction port, help might need to come from...
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    Put the 2 inch strip at the bottom ...

    Push the sheetrock to the ceiling, so that the 2 inch gap is at the bottom. Fill the gap with a strip of sheetrock and tape the joint in the usual way, but cover (as in "hide") the joint with the...
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    Strap light better than hat light

    Besides the hat light's bill being in the way for lighting close-up work, the hat light (at 18.99 + ship) compared to this strap model ... ...
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    " ... I really like those charts about the copper ..."

    A master plumber saying he's impressed---that makes my day.

    /kop
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    options for a confined space

    Consider bypassing the 1/2" bootleneck with a run a new pipe at 3/4" OR even 1" diameter (@ $3 a foot in Type L copper nowadays---PEX looks better and better). Pick the exit and reentry points into...
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    At least one state's plumbing code forbids the...

    At least one state's plumbing code forbids the use of galvanized pipe for fuel gas plumbing. (Whether this prohibition is scientifically valid---I don't know.)

    As always, best to do what the AHJ...
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    Referring to ...

    Referring to
    http://www.irrigationtutorials.com/copperloss.htm
    and assuming worst case that
    a) the 1/2" length is Type L copper (type M is thinner and thus larger in ID) and
    b) the flow rate is...
  8. Thread: Soundproofing

    by jfkopper
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    Generally, the fire codes require that foam...

    Generally, the fire codes require that foam insulation products installed in/on walls and ceilings be covered with a material of a suitable fire rating. One possibility is radiant barrier (like heavy...
  9. Thread: Soundproofing

    by jfkopper
    Replies
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    This product http://www.greengluecompany.com/...

    This product
    http://www.greengluecompany.com/
    was mentioned in a letter to Fine Homebuilding magazine (FH, Issue 185, March 2007, pg 10) comparing sound control products.
    The lab data are...
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