I think I found something beyond google.

Unknown

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?

flytrap

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?

Juliet

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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Buffco

We need pictures of what you're trying to do.

Juliet

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


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ricinus

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

seppala

Good god. You mean stuff grows in that cinder-clay mixture?

jbilly

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?

jbilly

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.

Buffco

Why can't you concrete that in?

Buffco

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?

Juliet

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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Juliet

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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Juliet

Check my maths, people.


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jbilly

You were supposed to divide by pi multiplied by the square root of the hypotenuse. Seriously, even a geologist would know that.

Buffco

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.

Juliet

I put some rebar in.


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George K

That Buffy, he sneer at your rebar.

Hextall

That is the best time machine I've ever laid eyes on.

flytrap

Okay, Buff, so it's less than a professional-grade job. If he was into construction he wouldn't be a lawyer. Saaaaaay...

ricinus

That ther thang will crack the first time you turn it on. [/ spits some chaw and wipes mouth with back of hand]

Mike

Juliet

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.

jbilly

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.

Hextall

My only criticism is you didn't draw an outline of a **** in the drying concrete. Otherwise, that's top notch.

seppala

Is that disposal a Clarkmann?

breamfisher

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?

Buffco

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.

Buffco

Oh and it wouldn't be Monday morning quarterbacking before hand. That's just called "advice."

Hextall

sherb wrote: »

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.

Juliet

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.

Juliet

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.