What are thrust blocks?

txmatApril 28, 2012

I am going to be installing a RP backflow Preventer and the installation diagram that I have seen calls for concrete thrust blocks where the horizontal underground pipe ells to the vertical support pipe. Where do I get a "thrust block" or how do I make one?

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Thrust blocks are made of concrete so pipes can't move. Typically at the 90 ell the concrete is poured so the pipe can't move.

Good luck,

    Bookmark   April 28, 2012 at 7:41PM
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So I just mix up some cement and pour it in the hole next to the ell - no form or anything?

    Bookmark   April 29, 2012 at 12:03AM
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Thats about it. On large pipe for golf courses we would prefab them then set the prefab with more concrete on site.

Just takes the flex out of the pipe in the case of a surge.

Good luck,

    Bookmark   April 29, 2012 at 1:24AM
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Thanks Tom.

    Bookmark   April 29, 2012 at 12:26PM
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