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104 votes

Can I pour concrete over a PVC sewer pipe without damaging it?

Move the hole. You know its in a bad place. If you break the pipe with your flag pole you will curse your own stupidity and hate the flag pole and that is how bad things start. If you do get away ...
Willk's user avatar
  • 6,613
31 votes

Can I pour concrete over a PVC sewer pipe without damaging it?

Never, ever, mess with any pipe underground. No matter if it is any kind of plastic, steel, brass, copper, ceramic, concrete, whatever. No matter if it is used for sewer, water, gas, electricity, ...
fraxinus's user avatar
  • 3,199
27 votes

Hole dug from underneath basement floor

The hole is from something that used to go through the concrete. Check it out. There is a circular concrete ring around that hole. Here is the original and I outlined ring in yellow. A thing ...
Willk's user avatar
  • 6,613
24 votes

Hole dug from underneath basement floor

Mongolian Death Worm Pour 13.7 oz of Diet Dr. Pepper into the hole to keep the worms away, remove the white glue and other foreign materials, and then patch normally. If necessary, fill the hole with ...
gnicko's user avatar
  • 5,615
23 votes

Can I have utility location done well in advance of a fence project?

Utilities, as a rule, are delighted to come out any time and mark locations. They would much rather avoid a problem instead of having to deal with an outage. If they need to come out again, e.g. ...
HABO's user avatar
  • 1,637
22 votes

How to bury electrical wiring

You can't actually use indoor wire underground. The wire or cable will get wet, will degrade, leak, and do really strange things like electrify the ground. There is nothing you can do to keep ...
Harper - Reinstate Monica's user avatar
19 votes

What metal is most suitable for a ladder submerged in an underground water tank?

Stainless steel is the obvious choice. Which exact grade is probably more dependent on what you can easily find than what the "most perfect for the job" grade might be, but 316 or 316L would be high ...
Ecnerwal's user avatar
  • 220k
17 votes

Can I have utility location done well in advance of a fence project?

This is a normal thing to do. In my state, for example, the utilities must have been located within a certain number of days of digging. They are also happy to mark utilities for just project planning,...
PhilippNagel's user avatar
  • 4,957
13 votes

Hole dug from underneath basement floor

I would agree that based on that ring, it looks likely that something used to go through the concrete. However, I do believe there are cases where an animal can indeed chew through concrete. I was ...
susie derkins's user avatar
12 votes
Accepted

Restoring collapsed buried pex line?

If the PEX is or can be stripped down to the point where there are no tight bends and no fittings then you can mechanically test for an obstruction. A electrician's fish tape will fit inside the tube. ...
Greg Hill's user avatar
  • 31.1k
11 votes

Can I pour concrete over a PVC sewer pipe without damaging it?

TL;DR You shouldn't do that. If for no other reason then consider this simple fact. If that pole gets knocked over via wind or a rogue vehicle then the concrete will tilt and puncture a hole in the ...
MonkeyZeus's user avatar
  • 16.7k
10 votes

What is this cable popping out of my lawn?

It appears to be COAX cable and it's almost certainly your (or your neighbors) CATV (i.e. Cable TV) line. These are often placed near trees and they get pushed up as the tree grows. That one is very ...
jwh20's user avatar
  • 23.4k
10 votes
Accepted

Underground Wiring Through Basement Wall

You certainly can exit/enter directly below ground. One reason it's not commonly done is that when done that way, it's common for it to cause a leak, so consider where water entering the box via the ...
Ecnerwal's user avatar
  • 220k
10 votes

How do I repair a buried UF cable sheath?

20A with GFCI is allowed to be 12" deep, yes (residential branch circuit, 120V or less, with GFCI protection, Table 300.5, Column 4, Note 4.) I'm not sure exactly what code has to say on the ...
Ecnerwal's user avatar
  • 220k
9 votes

Can I have utility location done well in advance of a fence project?

Once you know where the utilities are located then you know where the utilities are located. After they mark the ground with paint you can put a stake or a flag there so that if the marking paint ...
Alaska Man's user avatar
  • 13.6k
9 votes

Are unions considered harmful to plumbing?

The IFGC doesn't allow unions in concealed spaces because of their leaking proneness. See the IFGC's 404.5 commentary. You're right to try avoiding their use, but you're not describing a concealed ...
popham's user avatar
  • 10.4k
8 votes

PEX vs PE coiled pipe for underground use

"Black polyethylene" seems to commonly refer to HDPE pipe, which is pretty comparable to PEX. "Just" PE pipe is cheaper and less durable than HDPE - I'd advise against that ...
zdriver's user avatar
  • 81
8 votes

What material pipe to carry water to a detached garage

I don't know California specifics, but "Polyethylene well water pipe" is a common material for direct burial installation - get the 200 PSI version for the thickest walls / most durability. ...
Ecnerwal's user avatar
  • 220k
7 votes

Can I have utility location done well in advance of a fence project?

It would be quite unusual that utility location would entirely prevent you placing the fence where you want it. More likely is that proximity of utilities could require several fence holes to be dug ...
Greg Hill's user avatar
  • 31.1k
6 votes

What metal is most suitable for a ladder submerged in an underground water tank?

To add a bit to the question from Pavel in the comments of Ecnerwals answer: Stainless steel structures in swimming pools are known to be prone to SCC. The use of standard austenitic stainless steels ...
undefined's user avatar
  • 162
6 votes

Can I have utility location done well in advance of a fence project?

I see you are from New York. You must call 811 48 hours and up to 10 days before you dig an inch on your property. Unless you know where every wire or service is buried on your property and how deep, ...
Gunner's user avatar
  • 4,427
6 votes

What material pipe to carry water to a detached garage

Ask the supply house if they have a waterworks division or if they can give the name of a local waterworks distributor. (Ferguson is a national waterworks distributor who happens to have branches in a ...
Greg Hill's user avatar
  • 31.1k
6 votes
Accepted

Burying multiple circuits in one trench

I am not a code expert, but my understanding of reading 300.5 is that multiple circuits would be permitted, provided: Each circuit <= 20A and GFCI protected Conduit fill requirements are met (not ...
manassehkatz-Moving 2 Codidact's user avatar
5 votes
Accepted

Future underground electrical supply

Definitely run the largest conduit you can obtain across the driveway. Possibly two or three or four parallel runs -- you don't know if you will eventually want to use one for low-voltage cabling, ...
David Pfeffer's user avatar
5 votes

How to bury electrical wiring

Sure, you can...but as far as whether you should then no. I know its probably not what you're thinking of at the moment but in the future, among other problems, someone digging around in the garden ...
Lio Elbammalf's user avatar
5 votes

Are unions considered harmful to plumbing?

Unions are fine. You see them in plumbing work all the time. It's impossible to plumb some items without a union. What you want to avoid is unnecessary unions. If there's a way to plumb it with fewer ...
KMJ's user avatar
  • 12k
4 votes
Accepted

Is underground electrical cable underwater capable?

Absolutely not. Underground rating presumes physical protection by the surrounding earth. Undersea cable is designed to be laid on the sea floor. You may have other threats like water-moved rocks,...
Harper - Reinstate Monica's user avatar
4 votes
Accepted

Running Cable Underground in PVC Conduit - Do I bond the PVC segments before pulling the wire through?

Is there a simple, definitive answer to this? Yes It may seem more convenient to install the wire as you go in a very few cases but the National Electrical Code prohibits it and is quite clear. From ...
ArchonOSX's user avatar
  • 20.1k
4 votes

Using 1.25" SCH 40 PVC pipe to protect hose for irrigation

Rather than "hose in pipe", use 200 PSI (if you want the tough stuff) black polyethylene pipe, and appropriate fittings, and no hose inside it. (Or schedule 80 pipe as suggested in comments, ...
Ecnerwal's user avatar
  • 220k
4 votes

Can I pour concrete over a PVC sewer pipe without damaging it?

I would move the flagpole to a different location so you do not disturb that PVC pipe. Also, I would contact the sewer company and ask how deep their piping is since most sewer piping is much deeper ...
d.george's user avatar
  • 12.4k

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