driveway? Packed soil under 2-4 inches of packed recycled asphalt. Nothing larger than 5,000lbs over it. Current pipe is I think a 4 inch black plastic corrugated, which has collapsed in at lease one place. About 30 feet to replace, its only about 3-4 inches down. Only purpose is to run the downspouts out the back of the house into the gully back there, joining natures natural flow. Schedule 40, schedule 80, aome other, stronger variant of black plastic?

driveway? Packed soil under 2-4 inches of packed recycled asphalt. Nothing larger than 5,000lbs over it. Current pipe is I think a 4 inch black plastic corrugated, which has collapsed in at lease one place. About 30 feet to replace, its only about 3-4 inches down. Only purpose is to run the downspouts out the back of the house into the gully back there, joining natures natural flow. Schedule 40, schedule 80, aome other, stronger variant of black plastic?

Why does it have be BLACK pipe??

What are you insinuating about WHITE pipe?? It's not BIG enough, or LONG enough??:cds:

driveway? Packed soil under 2-4 inches of packed recycled asphalt. Nothing larger than 5,000lbs over it. Current pipe is I think a 4 inch black plastic corrugated, which has collapsed in at lease one place. About 30 feet to replace, its only about 3-4 inches down. Only purpose is to run the downspouts out the back of the house into the gully back there, joining natures natural flow. Schedule 40, schedule 80, aome other, stronger variant of black plastic?

Guy I talked to recommended pvc. Non-corrugated. Made sense to me.
Nothing to trap debris.

Guy I talked to recommended pvc. Non-corrugated. Made sense to me.
Nothing to trap debris.

I would agree.. You're not trying to capture ground water, just trying to move the water away from the house from the downspouts..

Don't forget an air vent with solid pipe..

I would agree.. You're not trying to capture ground water, just trying to move the water away from the house from the downspouts..

Don't forget an air vent with solid pipe..

Hmm, never thought of that. Only reason I can see for the flex pipe is if you have to flex it.

Guy I talked to recommended pvc. Non-corrugated. Made sense to me.
Nothing to trap debris.

There you go Bob... white pipe.

Probably should use six, ya think? Average size for white pipe? Where and why for vent, Bob? Straight downhill run, drains one whole side of the roof. Down eight feet from ground level, under driveway for a 35 straight run , then about six feet down a steep slope.

Probably should use six, ya think? Average size for white pipe? Where and why for vent, Bob? Straight downhill run, drains one whole side of the roof. Down eight feet from ground level, under driveway for a 35 straight run , then about six feet down a steep slope.

hard rain won't drain fast enough without a vent to get air behind the water. Think of shotgunning a can of beer. Beer only comes out so fast until you vent the bottom of the can. Then it's like 12 ounces all at once..

That's a long run to not have a vent.. but I'm not a plumber. I would think at least vent before you go under the driveway, or his before it goes underground at the downspout.

Or would the downpour be considered the vent?

But to answer your original question. 4 inch schedule 40, don't forget the purple primer to go.with your PVC glue.

Ah, the beer thing made it, anytime you can work in a beer analogy to a sailor, it makes sense:buddies: And I never forget my primer, I did a bunch of PVC stuff in the old house (1950s iron pipe, ahhhrrrrgggggg) and never made a bad joint.