Demo Hammers for Hard Pavement

Posted by: @jim-frame?ÿ?ÿ (see map excerpt below).

Yikes!

@notsomuch

I think you can get it in Canada.

Posted by: @jim-frame

Posted by: @skeeter1996

What if he put a marker at the beep? Would you dig down 6 feet to disprove his location?

The point isn't to disprove the beep location, it's to prove the correct location.?ÿ (Deepest I've gone so far is 4 feet.?ÿ I hope I never have to go any deeper!)

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@jim-frame Exactly!

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Posted by: @bill93

I suppose the problem isn't the center of the magnetic indication being off, but for a deep rod the indication is so broad you can't really tell where center is. True?

Narrowing down the center is one problem, but I think the lean -- however subtle -- of the vertical object can also project a misleading signature at the surface.?ÿ And more than one iron object can really confuse things (see map excerpt below).

Attachment : t.jpg

One person doing the digging and referencing four other things like this, makes it a lot easier to accept that "beep" (as well as have some real numbers to use for calculations as to where exactly that beep is).?ÿ

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Eli

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Posted by: @protracted

One person doing the digging and referencing four other things like this, makes it a lot easier to accept that "beep"

That excerpt is from a Record of Survey filed for a county monument preservation project.?ÿ I've done several over the years; on that one there was a total of 29 monuments to be searched and replaced with standard county well monuments.?ÿ Yes, I did a lot of digging and referencing, but I had a helper (though I've done some others solo).?ÿ ?ÿI was also well-paid for the job, so no complaints from me.

@skeeter1996 What particular model??ÿ Is it SDS, SDS+, or some Chinese proprietary bit-shank style? Can you post a link, please?

@sergeant-schultz

I don't remember. I just Googled gas jackhammer and the Chinese one was the cheapest. I got the bits from somewhere in the US. They cost more than the jackhammer. The jackhammer came with a chisel bit

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https://www.northerntool.com/shop/tools/product_200773733_200773733?cm_mmc=Google-pla&utm_source=Google_PLA&utm_medium=Construction%20%3E%20Demolition%20Tools&utm_campaign=Ironton&utm_content=73166&&ds_e_ad_type=pla_with_promotion&gclid=CjwKCAiAzNj9BRBDEiwAPsL0d8YF6lq6PCGeYQiOcvvPXaewSsc2s6PYUWlbvFVX3DzBpB__1BubjxoCAeMQAvD_BwE&gclsrc ="aw.ds"

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Ironton stuff is usually low-mid quality, but some of the 'dumb' tools I have are useful for what they are.

I have none of their power tools.

A Honda 2000 and a Bosch 745 or a dewalt will be the best $2000 you have ever spent. I use the hell out of mine. Not only for digging up stuff, but I set all of my gravel road corners 10inches deep so the county blade never gets to em. Also when you have to set 50 rebar for your new sub in a day you wont get tennis elbow. Drilling in conc for mons? No problem.

Bonus is I keep a tiny microwave and I can have a warm lunch.