What Type Of Slope Can Mini Track Loaders Handle???

 
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Old 07-22-2006, 12:51 AM   #1
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What Type Of Slope Can Mini Track Loaders Handle???


I have a hillside grading job on Tuesday and I was wondering how steep of a slope a Bobcat T300, T250, or a Cat 287B can handle. This is a time and materials job and I will be renting a piece of equipment to perform the work. It looks like a 1 to 1 or a 45 degree slope. I didnt measure it when I did the job walk but maybe I should have.
Basicly whats going on here is a new deck / carport over a hillside in Silver Lake, California. The contractor has already drilled and poured 12 caissons. My job is to remove all the caisson spoils from the hillside and grade the slope to about 45 degrees from what I guessed. The slope is kinda hilly due to spoils and natural terrain. Access to the sight is from the street above, where I will being loading the 10 wheel dump truck. The area is about 100 feet wide by 150 feet down the hill. Below this area is a retaining wall and a small street. At least I cant crash into a house down below! My plan is to cut / grade a path downward to within what I think grade will be. Then I will back down this path and begin cuting and grading upward and loading the truck. There will be about 70 to 80 cu. yards of dirt to haul away. I know I cannot turn on this steep of a slope, so this is my plan. Im going to bring my 963 Bobcat for pulling me back up the slope if I get stuck.
What do you guys think??? Is there a better way using equipment that wont cost a small fortune? Can these machines handle it? Can they handle more than a 45 degree slope?

Eric
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Old 07-23-2006, 09:40 AM   #2
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Re: What Type Of Slope Can Mini Track Loaders Handle???


I just checked Cat's web site, they advertise the angle of departure as 47 Degrees for the 287B, so it should traverse that slope ok.

Bobcat doesn't publish that spec on their site.

I would trust the Cat or an ASV on that kind of slope. I am not fond of the Bobcat track loaders, they seem top heavy to me.

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Old 07-23-2006, 09:50 AM   #3
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Re: What Type Of Slope Can Mini Track Loaders Handle???


They can handle the slope, especially the widepad versions. The problem I think you'll encounter if you flatten the grade downhill...Then cut and grade uphill, you may be there awhile. First off, what type of soils are you dealing with? Is it firm, soft, sandy, loamy? That makes a huge difference. If there is that much material I would suggest cutting most of the material as you go down the slope. Bobcats cutting uphill tend to bog down too easy. If it's sandy, you WON'T cut up hill. You mentioned getting stuck, is the slope wet?? There are a lot of variables to taking on a slope that big and that steep. How big is the retaining wall below??? Usually working a slope you go from top to bottom when cutting. Cutting a slope uphill takes twice as long. Try working the slope at angles and that will help a lot. From my experience, I graded a 1 1/2 to 1 slope with a T250. Pond and silt fence at the bottom. The slope was very fat at the center plus the slope curved around the pond. I had to cut uphill, but I did it at angles to where I was working damn near sideways on the slope, that was the only way I could make progress. I didn't worry about any finish work till the very end since I was turning so much. Sounds like you have your work cut out for ya. 80 yards is a lot...one bobcat bucket at a time!!!!!
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Old 07-23-2006, 06:11 PM   #4
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Going straight up and down you won't have a problem going on a 2/1.
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Old 07-24-2006, 07:37 PM   #5
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Re: What Type Of Slope Can Mini Track Loaders Handle???


how does the price of a real track loader stack against the little buggies there? maybe the time saved and the stress avoided would be a consideration?
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Old 07-24-2006, 07:52 PM   #6
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Re: What Type Of Slope Can Mini Track Loaders Handle???


I'm not an excavator, but find reading this stuff interesting.

A 45 degree slope is steeper than 95% of the ski runs on the ski slopes in North America. My mouth is still open hearing that you can do what you plan on doing on a slope that steep! It doesn't seem possible to me, but what do I know?

On a slope that steep aren't retaining walls required?
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Old 07-24-2006, 11:31 PM   #7
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Re: What Type Of Slope Can Mini Track Loaders Handle???


45 degrees?! That's a 100% gradient (1' rise for 1' run). I don't see being able to keep dirt on a hill ike that much less run anything across it. I've done some jobs on 40% + slopes and they were nearly unmanageable. I think you oughta' recheck what you think is 45 degrees.
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Old 07-25-2006, 12:10 AM   #8
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Tomorrow morning I will be picking up a Bobcat T250. I will also be bringing my digital camera to document this job and a 4 foot level to measure the exact grade of the slope so we can all learn what this machine is capable of.

The dirt is a very light colored dry clay or something like that. Im not a soil engineer nore have I seen the soil report on this project.

I spoke with the guy in charge of the rental department at my local Bobcat dealer about what type of slope a T250 can handle and he said, "they are desingned to handle a 45 degree slope but he cant believe the sh*t that guys tell him that they do with them. He also said that the machine would slide down the hill before it would flip backwards.
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Old 07-25-2006, 12:22 AM   #9
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Re: What Type Of Slope Can Mini Track Loaders Handle???


I would like to use a small track loader on this job, but the job site is kinda small, Im more comfortable running a T250 with the Bobcat controls (I can run Bobcats in my sleep), and I like to be able to see my cutting edge on my bucket.
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Old 07-25-2006, 04:28 AM   #10
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Yeah, you'll never tip that thing... As long as you remember, keep the bucket close to the ground! Oh and if it's a clay type material...you will have no probs running on it...unless of course it rains, then you will have a giant ski--ddy slope!!!
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Old 07-25-2006, 11:06 AM   #11
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Quote:
Originally Posted by TMatt142
Yeah, you'll never tip that thing... As long as you remember, keep the bucket close to the ground! Oh and if it's a clay type material...you will have no probs running on it...unless of course it rains, then you will have a giant ski--ddy slope!!!
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Old 07-26-2006, 01:42 AM   #12
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Re: What Type Of Slope Can Mini Track Loaders Handle???


This will be my tenth post so lets see if I can post images now.
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Old 07-26-2006, 01:44 AM   #13
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Re: What Type Of Slope Can Mini Track Loaders Handle???


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Old 07-26-2006, 01:49 AM   #14
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Today went pretty well. I measured the slope and it is not a 1 to 1 as I had feared. Its a little less than 1 to 1 but I forgot exactly what I had measured. I will make sure I remember tomorrow.

I cut grade going down hill first with the tooth bucket. I was only able to get half scoops.Then I backed up the hill and loaded the dirt into my 10 wheeler. I then wanted to try and grade by cutting upward. I drove down the slope backward with a bucket full of dirt just to make sure I wouldnt just flip backward if I had an empty bucket. Everything felt okay untill I began dumping out some of the dirt in the bucket. It began to feel a little light in the front and that worried me. So I decided to put my 963's smooth bucket on and use it to grade. The smooth bucket has about a 1.3 cubic yard capacity. So as I graded up hill, I would leave about 1/4 to 1/3 of the bucket full of dirt to act as a counter weight for the front end. This worked realy well. If you where to do this with the tooth bucket, the amount of counter weight dirt that I felt comfortable with would not leave you much room for spoils.

That first attempt at seeing if I could grade uphill on that slope was kinda scary. Remember, Im accessing this job from the top of the hill and theres no place to turn around at the bottom of the slope. Its not like Im at the bottom of the hill and climbing upward and then seeing what the machine can do and if it gets kinda scary then I could simply go back down.

Below are some photos from the today.



View from above.


Street down below.


View from side.


View from below.



View from other side.










If you want to see all the photos just click on a photo and it will take you to the photobucket gallery.
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Old 07-26-2006, 11:56 AM   #15
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Wow, that looks like a fun site.
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Old 07-26-2006, 12:25 PM   #16
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Why don't you use some of the fill to make a temporary turn-around spot for the machine?

A 4-in-1 bucket sure would be handy on that job.

I agree with Cole about the fun site. Can't do any daydreaming while working that site.
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Old 07-26-2006, 01:08 PM   #17
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Re: What Type Of Slope Can Mini Track Loaders Handle???


If that sucker was about 15 times longer down hill, we could use it as a mogul run in the winter.
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Old 07-27-2006, 04:19 PM   #18
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Re: What Type Of Slope Can Mini Track Loaders Handle???


I think I'd have gone with a small excavator - 10 MT or there abouts. Hard to know exactly without being there.
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Old 07-27-2006, 04:38 PM   #19
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Thanks for posting pics. I always enjoy seeing other peoples work.
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Old 07-27-2006, 05:13 PM   #20
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Re: What Type Of Slope Can Mini Track Loaders Handle???


Quote:
Originally Posted by PipeGuy
I think I'd have gone with a small excavator - 10 MT or there abouts. Hard to know exactly without being there.
I'd have to agree with Pipe on this one.

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