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I think I found something beyond google.

There's a few images, but they aren't very helpful. I need to design a thrust block for a 4" irrigation pipe Z coming off my irrigation pump. I think the thrust block at 90 degree corner should be a simple affair; you simply concrete in the corner. But the Z looks like it will be more involved. Who can help with this or perhaps direct me to an online resource?
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Replies

  • flytrapflytrap Banned Posts: 1,659 Senior Member
    Damned if I know what a thrust block is, but from your description of the problem would a series if pvc elbows to form an S work?
  • JulietJuliet Posts: 49,774 Senior Member
    Already have that. That's what the Z is. I just need to find a way to concrete it in so that the back pressure doesn't move it.


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  • BuffcoBuffco Senior Member Posts: 10,585 Senior Member
    We need pictures of what you're trying to do.
  • JulietJuliet Posts: 49,774 Senior Member
    33d2f9534b2afd7a38112a0d9b9e3c13.jpg
    60cb9111ebc3efa4ffd1c39f0e91fdb8.jpg

    That's a Z. I need to concrete that in to keep the back pressure from blowing it out.


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  • ricinusricinus Senior Member Posts: 6,210 Senior Member
    Concrete is permanent so any repairs would be impossible. Would tightly compacted sand/gravel with a wide brace against the Z work? Either that or stainless steel rebar..

    Mike
    My new goal in life is to become an Alter Kaker...
  • seppalaseppala Senior Member Posts: 1,916 Senior Member
    Good god. You mean stuff grows in that cinder-clay mixture?
  • jbillyjbilly Senior Member Posts: 6,020 Senior Member
    sherb wrote: »
    [
    That's a Z. I need to concrete that in to keep the back pressure from blowing it out.

    ****, how much pressure are we talking about here? Oh wait just re-read first post about 4"line.

    What are you irrigating? Tater? Alfalfa? Hay? Weed?
  • jbillyjbilly Senior Member Posts: 6,020 Senior Member
    seppala wrote: »
    Good god. You mean stuff grows in that cinder-clay mixture?

    Hahahaha. Yeah it is kind of a cruel miracle that things grow out west. Sadly weeds seem to thrive in our $hitastic clay. I might not get much else to grow in the yard but the **** bind weed and thistle type weeds seem to love this crap.
  • BuffcoBuffco Senior Member Posts: 10,585 Senior Member
    Why can't you concrete that in?
  • BuffcoBuffco Senior Member Posts: 10,585 Senior Member
    I think I may understand your thinking. If you concrete in a 90° you wouldn't pour concrete around the casing itself right? Just pour behind the pipe?

    If that's what you're thinking, make your form boards the same slope as the sloped part and pour very low slump concrete.

    The part you're concerned about blowing out is the bottom connection right?
  • JulietJuliet Posts: 49,774 Senior Member
    Buffco wrote: »
    I think I may understand your thinking. If you concrete in a 90° you wouldn't pour concrete around the casing itself right? Just pour behind the pipe?

    If that's what you're thinking, make your form boards the same slope as the sloped part and pour very low slump concrete.

    The part you're concerned about blowing out is the bottom connection right?

    Exactly what I ended up doing. Thanks.


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  • JulietJuliet Posts: 49,774 Senior Member
    seppala wrote: »
    Good god. You mean stuff grows in that cinder-clay mixture?

    Lol yeah, it's dry.

    It takes a ton of water to irrigate this place.. I'll bet it doesn't rain again until November.


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  • JulietJuliet Posts: 49,774 Senior Member
    4bbef95205ffd091096da08f9cb0710b.jpg

    Check my maths, people.


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  • jbillyjbilly Senior Member Posts: 6,020 Senior Member
    You were supposed to divide by pi multiplied by the square root of the hypotenuse. Seriously, even a geologist would know that.
  • BuffcoBuffco Senior Member Posts: 10,585 Senior Member
    No squared edges, no form boards, no water barrier below the concrete so the moisture in the drying concrete will leach out into the ground (which doesn't allow the concrete to reach its max strength), no attempt at floating, and no anchors in the concrete to secure the pipe.

    It's like you don't even care. You better at least tell me you bought concrete with fibers added.
  • JulietJuliet Posts: 49,774 Senior Member
    I put some rebar in.


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  • George KGeorge K Super Moderator Posts: 11,677 Senior Member
    That Buffy, he sneer at your rebar.
    The GOP big tent now is the size of a pup tent, its floor splattered with guano.
  • HextallHextall Senior Member Posts: 9,520 Senior Member
    That is the best time machine I've ever laid eyes on.
  • flytrapflytrap Banned Posts: 1,659 Senior Member
    Okay, Buff, so it's less than a professional-grade job. If he was into construction he wouldn't be a lawyer. Saaaaaay...
  • ricinusricinus Senior Member Posts: 6,210 Senior Member
    That ther thang will crack the first time you turn it on. [/ spits some chaw and wipes mouth with back of hand]

    Mike
    My new goal in life is to become an Alter Kaker...
  • JulietJuliet Posts: 49,774 Senior Member
    Well, I'm feeling very persecuted right now. Where was all of this Monday morning quarterbacking when it could have made a difference? Not here.

    I'm gonna dynamite the whole line and start over.
  • jbillyjbilly Senior Member Posts: 6,020 Senior Member
    sherb wrote: »
    Well, I'm feeling very persecuted right now. Where was all of this Monday morning quarterbacking when it could have made a difference? Not here.

    I'm gonna dynamite the whole line and start over.

    Holy crap, you can't even get that right...thermite.
  • HextallHextall Senior Member Posts: 9,520 Senior Member
    My only criticism is you didn't draw an outline of a **** in the drying concrete. Otherwise, that's top notch.
  • seppalaseppala Senior Member Posts: 1,916 Senior Member
    Is that disposal a Clarkmann?
  • breamfisherbreamfisher Senior Member Posts: 6,314 Senior Member
    Hextall wrote: »
    My only criticism is you didn't draw an outline of a **** in the drying concrete. Otherwise, that's top notch.
    Maybe he didn't because he doesn't have a photo of you?
  • BuffcoBuffco Senior Member Posts: 10,585 Senior Member
    sherb wrote: »
    Well, I'm feeling very persecuted right now. Where was all of this Monday morning quarterbacking when it could have made a difference? Not here.

    I'm gonna dynamite the whole line and start over.
    Look you decided to pour before consulting me. In fact I'm going to have to charge you double because we have to start all over.
  • BuffcoBuffco Senior Member Posts: 10,585 Senior Member
    Oh and it wouldn't be Monday morning quarterbacking before hand. That's just called "advice."
  • HextallHextall Senior Member Posts: 9,520 Senior Member
    sherb wrote: »
    4bbef95205ffd091096da08f9cb0710b.jpg

    Check my maths, people.

    I did the math on this, and the solution is:

    ha ha... your pinky sticks way out like a **** when you take pictures.
  • JulietJuliet Posts: 49,774 Senior Member
    Buffco wrote: »
    Look you decided to pour before consulting me. In fact I'm going to have to charge you double because we have to start all over.

    The dynamite is free, though, right? I mean, it was your screwup.
  • JulietJuliet Posts: 49,774 Senior Member
    Hextall wrote: »
    I did the math on this, and the solution is:

    ha ha... your pinky sticks way out like a **** when you take pictures.

    That's how I take my tea.

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