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Old 01-23-2017, 04:56 PM
 
186 posts, read 345,972 times
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Any place on the island I can rent a skidster or machine like this? Will they allow me to tow it with a 1/4 ton truck? (some places do not allow a 1/4 ton to tow for insurance reasons)

What do people on the BI use to excavate in lava rock? I've got a jackhammer, but not sure if that will work down there? I can get a jackhammer attachment on a skidster if they carry that down there.
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Old 01-23-2017, 05:39 PM
 
Location: Pahoa Hawaii
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Try punaislandwiderentals.com
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Old 01-23-2017, 07:00 PM
 
Location: Juneau, AK + Puna, HI
10,557 posts, read 7,758,541 times
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Quote:
Originally Posted by MikeyMike11 View Post
Any place on the island I can rent a skidster or machine like this? Will they allow me to tow it with a 1/4 ton truck? (some places do not allow a 1/4 ton to tow for insurance reasons)

What do people on the BI use to excavate in lava rock? I've got a jackhammer, but not sure if that will work down there? I can get a jackhammer attachment on a skidster if they carry that down there.
Backhoe or excavator with hydraulic hammer is used on lava rock.
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Old 01-23-2017, 07:40 PM
 
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Quote:
Originally Posted by Blind Cleric View Post
Backhoe or excavator with hydraulic hammer is used on lava rock.
So a hydraulic hammer on a bobcat/skidster would have enough power? I could rent one of those for $250/day. Not looking to do the whole lot, just a few deep holes, so I can sink some sonotubes in there. Only large hole would be for the septic tank. The lots I'm looking at have been 24"-80" of soil depth, based on soil surveys.

How about pouring a concrete driveway onto the lava. Namely the smooth lava, I can't remember what it's called. I would imagine that lava would be an excellent base.
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Old 01-24-2017, 01:28 AM
 
Location: Pahoa Hawaii
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It's Paho'eho'e, the chunky lava is A'a. I'm not sure where you got your soil surveys from, soil depth in Puna is 0 to 1-2 inches at most on average.
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Old 01-24-2017, 08:13 AM
 
Location: Juneau, AK + Puna, HI
10,557 posts, read 7,758,541 times
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Quote:
Originally Posted by MikeyMike11 View Post
So a hydraulic hammer on a bobcat/skidster would have enough power? I could rent one of those for $250/day. Not looking to do the whole lot, just a few deep holes, so I can sink some sonotubes in there. Only large hole would be for the septic tank. The lots I'm looking at have been 24"-80" of soil depth, based on soil surveys.

How about pouring a concrete driveway onto the lava. Namely the smooth lava, I can't remember what it's called. I would imagine that lava would be an excellent base.
Bobcat power on lava rock? Maybe, maybe not. Some of it can be pretty damn hard. Blasting out the big hole would definitely be a challenge. A guy with a backhoe doing my cesspool ended up using some dynamite to get the job done.

I'd suggest saving your concrete dollars for something more worthwhile than a driveway poured over pahoehoe.
What's the point? It's already just as functional as concrete or asphalt and looks much better, IMO. Just dump some cinder or gravel in low spots, if any, to level it out.
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Old 01-24-2017, 02:01 PM
 
130 posts, read 152,714 times
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Quote:
Originally Posted by leilaniguy View Post
It's Paho'eho'e, the chunky lava is A'a. I'm not sure where you got your soil surveys from, soil depth in Puna is 0 to 1-2 inches at most on average.
Mauka of Hwy 11 up in Mountain View and Glenwood there is some deep soil. Do you remember Pam Lamont talking about how sloppy it got during rainy periods?
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Old 01-24-2017, 02:02 PM
 
186 posts, read 345,972 times
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Quote:
Originally Posted by Blind Cleric View Post
Bobcat power on lava rock? Maybe, maybe not. Some of it can be pretty damn hard. Blasting out the big hole would definitely be a challenge. A guy with a backhoe doing my cesspool ended up using some dynamite to get the job done.

I'd suggest saving your concrete dollars for something more worthwhile than a driveway poured over pahoehoe.
What's the point? It's already just as functional as concrete or asphalt and looks much better, IMO. Just dump some cinder or gravel in low spots, if any, to level it out.
Thanks buddy, your advice has been very helpful so far. Always ready to go cheaper, as long as I don't sacrifice functionality!
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Old 01-24-2017, 02:04 PM
 
186 posts, read 345,972 times
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Quote:
Originally Posted by leilaniguy View Post
It's Paho'eho'e, the chunky lava is A'a. I'm not sure where you got your soil surveys from, soil depth in Puna is 0 to 1-2 inches at most on average.
Right here: https://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm

According to those surveys, you've got large areas with over 80" of topsoil. I actually located parcels in those areas, and they are significantly more expensive, so it doesn't seem like this is a secret. I would suggest using that site, it is tricky, but man, it can be very enlightening.
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Old 01-24-2017, 02:06 PM
 
186 posts, read 345,972 times
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Quote:
Originally Posted by mikereilly View Post
Mauka of Hwy 11 up in Mountain View and Glenwood there is some deep soil. Do you remember Pam Lamont talking about how sloppy it got during rainy periods?
I'm seeing about 24" of soil in many parts of the areas you mentioned. Seems to be some erosion issues, but good runoff, as well.

https://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm
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