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07-03-2008, 06:16 PM
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#1
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Pro
Trade:
Concrete, masonry & excavation
Join Date: Apr 2006
Location: New Jersey
Posts: 234
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Helical Pile Job
Hello everyone has been a long time have been busy and this site seems a bit slow from my computer so have not been on for a while. Here is an addition we are doing on a toll plaza we have to install helical pull down piles 60 kip / 50' min piles. We ended up install 1 3/4" helical piles with A 5" grout colomun about 75' deep with a ultimate capicity of 150 kip min.
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07-03-2008, 06:19 PM
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#2
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Pro
Trade:
Concrete, masonry & excavation
Join Date: Apr 2006
Location: New Jersey
Posts: 234
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Here are some more pics.
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07-04-2008, 10:43 AM
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#3
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Pro
Trade:
Registered (cough) Home Improvement Contractor
Join Date: Mar 2008
Location: South Jersey
Posts: 830
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What toll plaza is that?
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07-04-2008, 11:07 AM
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#4
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Pro
Trade:
Outdoor D/B
Join Date: Jun 2005
Posts: 1,840
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Nac what in the world does "helical pull down piles 60 kip / 50' min piles. We ended up install 1 3/4" helical piles with A 5" grout colomun about 75' deep with a ultimate capicity of 150 kip min." mean?
Could you explain what exactly you are doing?
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07-04-2008, 11:21 AM
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#5
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demo master
Trade:
Remodeling General Contractor
Join Date: Aug 2006
Location: Denver Colorado
Posts: 1,459
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I did a helical pier job to support a foundation of a house so we could dig out and put in a home theatre. Ruskent they are giant screws put into the ground used as piers.
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07-04-2008, 01:01 PM
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#6
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Pro
Trade:
Concrete, masonry & excavation
Join Date: Apr 2006
Location: New Jersey
Posts: 234
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15E on the NJ Turnpike. 60 Kip= 30 Tons 50 feet min. dept. We installed them 73 feet deep with an utimate capicity of 150 Kip= 75 Tons each
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07-04-2008, 03:03 PM
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#7
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DGR,IABD
Trade:
Electrical; Commercial and Residential Service
Join Date: Mar 2005
Location: Central PA
Posts: 9,665
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Helical piles seem to be very common in the NY/NJ area, and are nearly unheard of in other areas. Do you rent the attachment that winds them in, with the pressure gauge, or do you own that? It looks brand new. What's something like that run?
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07-04-2008, 04:07 PM
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#8
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Pro
Trade:
Concrete, masonry & excavation
Join Date: Apr 2006
Location: New Jersey
Posts: 234
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the drive head is a 20,000 ft lb unit cost about $8500 with out the quick attach bracket and hoses. The torque data logger is about $4000 and I had to wire and plumb every thing myself.
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07-09-2008, 07:26 PM
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#9
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Vagitarian
Trade:
site and utility contractor
Join Date: Jan 2006
Location: Dallas, PA
Posts: 2,326
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How deep can you drill with that machine Nac ?? Seems kinda small for what you are doing.
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07-10-2008, 05:58 PM
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#10
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Pro
Trade:
Concrete, masonry & excavation
Join Date: Apr 2006
Location: New Jersey
Posts: 234
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Well we are installing helical anchors 73' deep up the 12,303 fl lbs of torque. I would say I am pussing the limit of the mini because at that torque the machine want to swing by itself. I am looking for a Komatsu pc-78 or a Deere 85D in the future to mount the auger motor on.
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07-10-2008, 07:25 PM
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#11
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Pro
Trade:
GC. Apprentice electrician
Join Date: Jul 2005
Location: Colorado Front Range
Posts: 2,529
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Quote:
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Helical piles seem to be very common in the NY/NJ area, and are nearly unheard of in other areas.
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They are common along the Colorado front range although cassions drilled to 90 ft with a rebar cage and concrete is more common. Bedrock is the name of the game which actually means "suitable bearing material" one of the problems with drilled cassions is that there is often water comming in and the trick is to have the concrete beat the water to the bottom of the hole. Heilopiers at least take care of the water problem if you can find an engineer to sign off on them. I imagine along the NJ lowlands drilling dry holes would be near impossible.
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07-11-2008, 04:57 AM
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#12
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Pro
Trade:
Concrete, masonry & excavation
Join Date: Apr 2006
Location: New Jersey
Posts: 234
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Yes the water table is a problem also here in many jobs you have to case the hole which can get expensive really fast. I am also looking to get into Titan anchors it is a hollow anchor that is drilled while being pressure grouted
Last edited by Nac; 07-11-2008 at 04:24 PM.
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