Pulling wiring under driveways

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Buck Parrish

Buck Parrish

Senior Member
Location
NC & IN
Trovmar said:
Hi guys i was wondering if anyone can help me with this one. I am putiing 4 20 amp dedicated recepticals in front of the customers house. The only way to get the wires back to the house is under a fourteen foot asphalt driveway. I don"t want to cut the driveway, and i dont think i can bang a pipe through. Has anyone experienced this before, and if so can you please help me.:confused:
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Sure, not a problem. You must dig holes on both side of the road for burial depth. Then you take your angle drill. Put three extensions with a 1 1/4 screw (nail eater) drill bit on the end. This will give you about 7 to 8 feet.
Drill through, then do the same on the other side. Then take a 3/4 inch conduit with a hook on it and pull the same from the other side.:wink:
 
weressl

weressl

Esteemed Member
Location
Texas by the Gulf, geat crab, great shrimp
iwire said:
I am rolling on the floor in laughter. :D
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You shape probably helps.:)

iwire said:
A civil engineer for a home driveway crossing ............ thats funny.:D:D
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This is exactly tha attitude why there are so many damage issues that defie common sense. When you wash under a load bearing structure, stability is always an issue, depending on the soil condition and what underlayment and compactiing method was used and ho deep do you bore under the structure. Worry now may save you from crying later. BTW I did not say civil engineer...:roll:
 
iwire

iwire

Moderator
Staff member
Location
Massachusetts
weressl said:
This is exactly tha attitude why there are so many damage issues that defie common sense. When you wash under a load bearing structure, stability is always an issue, depending on the soil condition and what underlayment and compactiing method was used and ho deep do you bore under the structure.
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There are many ways to do it without the use of water, some have been mentioned here.

My own choice would be to avoid the water and force one under without washing it out.

But the fact you would suggest a 'civil guy' for a simple home driveway crossing just shows how far from the real world you are.:D:D
 
R

ramsy

Roger Ruhle dba NoFixNoPay
Location
LA basin, CA
Occupation
Service Electrician 2020 NEC
iwire said:
But the fact you would suggest a 'civil guy' for a simple home driveway crossing just shows how far from the real world you are.:D:D
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Is it always necessary to make this personal, so your point is lost in offense (response) to antagonism?

I agree, without a comparative advantage, the conservative practice of self-conscious construction always results in a five-finger discount; the hallmark of Adam Smith's invisible hand.

During the last week some Home shows explored US home inspections as a price-negotiating tool. Prolific US owner/builder hazards have become a huge exploit for new buyers.

Most remodel construction isn't permitted, inspected, nor seen by "civil guys", except when owners are hot-rod engineers, conscientious-design Hobbyists, or forced by mortgage insurance to deal with inspections.
 
LLSolutions

LLSolutions

Senior Member
Location
Long Island, NY
I sub out an irrigation contractor, they use a 2" diameter air powered "missile" due to its shape it won't "wash anything out" so you can leave the army core of engineers alone. Since it's only air no muddy mess when you're done. I pay around $250 for a driveway "shot". It may sound overly cautious but you may want to call for a markout, they're free where I am. No need to turn a simple job into debt.

http://www.hammerheadmole.com/en-US...otMenuId=404991f4-dedf-4ad6-83a6-3f61d138fcba
 
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2

220/221

Senior Member
Location
AZ
Really, it should not be done without consulting a civil guy.
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I gotta go with Iwire one this one.

A 3/4" water shot makes about a 1" hole.


I don't need a degree to know that the driveway is not going to be compromised.
 
MAK

MAK

Senior Member
Location
Massachusetts-Boston
Calling in a " Civil Guy " for a simple shot under a drive way is kind of like calling a brain surgeon in to put a band aid on a cut finger, or like hiring Johnny Cochran to come and pay my parking ticket.
The flip side of this could be if it were a home in California where they seem to have whole neighborhoods slide down the side of mountains with the slightest bit of rain, then it would be a good idea.
 
Dnkldorf

Dnkldorf

Senior Member
I'd avoid the water tool, because the driveway will collaspe if too much water is used.

1/2" rigid fits in the ground rod attachment of your Hilti.

Goes through no problem.
 
cadpoint

cadpoint

Senior Member
Location
Durham, NC
Dnkldorf said:
I'd avoid the water tool, because the driveway will collaspe if too much water is used.

1/2" rigid fits in the ground rod attachment of your Hilti.

Goes through no problem.
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Another thread stated adding a addition piece to save the threads for later ?

This was/is asphalt drive of the double wide variety :rolleyes:
 
B

barclayd

Senior Member
Location
Colorado
The tone of the original post leads me to believe that this person has never done this type of work before. I'm not sure a customer's house is a good place to start your training.

I agree with Lazlo that some soil investigation is required before blindly proceeding to bang some pipe.

A contractor's liability is usually one year (if even that - depending on the contract). If the driveway sags or cracks after a couple years, the contractor will just turn his back and say "so what". (and rightly, legally so)
An engineer's liability is much longer.

HAPPY THANKSGIVING EVERYONE
db
 
weressl

weressl

Esteemed Member
Location
Texas by the Gulf, geat crab, great shrimp
Dnkldorf said:
I'd avoid the water tool, because the driveway will collaspe if too much water is used.
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My reply was addressing exactly what you are pointing to. The 'water drilling' did not address the bore size nor it consdiered depth or soil condition. A 'civil guy' weather he be an engineer or just a well versed substructure contractor would be able to give advice. Unfortunately tools often get into hands who have no idea about basics and create more harm than damage.
 
weressl

weressl

Esteemed Member
Location
Texas by the Gulf, geat crab, great shrimp
LLSolutions said:
I sub out an irrigation contractor, they use a 2" diameter air powered "missile" due to its shape it won't "wash anything out" so you can leave the army core of engineers alone. Since it's only air no muddy mess when you're done. I pay around $250 for a driveway "shot". It may sound overly cautious but you may want to call for a markout, they're free where I am. No need to turn a simple job into debt.

http://www.hammerheadmole.com/en-US...otMenuId=404991f4-dedf-4ad6-83a6-3f61d138fcba
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The company offers cost free assitance. A fool would not take advantage of that. The fact that they offer it, and offer it free, should indicate that there needs to be concern.
 
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