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    ASR - Concrete Cancer - Austin, TX

    ASR is a real problem in Austin, Tx with 100's of cases on record now. ASR is a reaction between 1) the alkalinity in the cement paste, 2) reactive aggregate (with lots of SiO2 - like the chert rock that is abundant around here) and 3) moisture that forms an expansive gel inside the concrete...
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    New Build please let me know what is wrong and what you would change

    What is your soil like ? A lot of soil in the Dallas - Ft Worth area is highly expansive clay (Las Colinas, Frisco among many other areas) & the Balcones fault zone runs pretty much right up IH35 - a single mat of #3 bars may not be enough steel. For high PI (plasticity Index) soils (say PI...
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    Gunite pool leaking......? best repair for Gunite cracks

    Since the cracks start about 4" below the normal water line and then run for a foot or so downward, am I correct in assuming that the cracks do not extend through the waterline tile band and into the coping? Being as small as they are, it may be difficult to see in the mortar joints near the top...
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    Gunite Sealer?

    Some central Texas pool contractors are using Aquafin or similar sealers to minimize the possibility of water coming through gunite due to high water tables. The sealer will soak several inches into the existing gunite and fill the void spaces to make it less permeable. Normally, you should not...
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    Can this be stopped?

    Madgunner - Being in Austin Texas myself, this condition is not unusual. From your description, it sounds like you may be on a hillside, especially if you are west of IH35, and the water tends to leak in from the one side. The limestone that is prevalent around here has lots of cracks that...
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    Anti entrapment suction covers

    mass985 is correct. There are three parts to the VGB law: 1) PUBLIC (not private) pool compliance is required by VGB (federal law) and is retroactive (so older pools had to meet VGB requirements before they could re-poen after 2008). 2) suction outlet covers that did not conform to ANSI 112...
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    VGB Drain Cover Question

    I forgot to mention in the previous post to check the rated flow stamped on the cover to be sure you do not exceed the cover rating. There are usually three to four screws that hold the cover in place (on a round cover). If you use the same brand to replace your old cover, the screw pattern is...
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    VGB Drain Cover Question

    VGB compliance has two parts for a suction outlet compliance. First is that the cover must conform to ANSI 112, which has been a federal law since 2008, as Jason Lion stated - so you can not buy a non-compliant cover in the US since 2008. So you should be good there. The other part is that there...