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2001 kenworth T800 tri axle dump

CRAFT

CRAFT

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GCC said:
Thats true and it really doesn't matter cause I wouldn't be push my max cap all the time cause I would be hauling for myself once I decide if I get the truck ill post pics and what it can tare
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LOL ...... I wasn't thinking that you did not understand what your weights would be ..... but more for the boys down South of the 49th ...... I catch myself all the time quoting metric, cause we havn't used pounds/tons in 30 yrs ... so gotta do the converting so everyone is on the same page ....... When do you pick-up the truck ? ...... maybe post some pics .....cheers
 
CM1995

CM1995

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CRAFT said:
...do you mean a tandem with the air lift axle or are you calling a tandem with the steering as a triaxle ? ....because we commonly call a tri-axle a truck with 3-drive axles (which have a carry cap. of 24,000kg or 52,910lbs)+ the steering and that will also have the big float 425x22.5 tires allowing 9100kgs or 20,000lbs .... of coarse a guy would need to know the tare weight to do the deductions for the net max cap.
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A tri-axle would be a tandem 46K rears, 20K lb lift axle and 20K lb fronts with floats. Depending on tare weights of individual trucks, we carry 25-26 imperial tons but like I said before this is on local and State roads, we cannot carry that much on the Interstates. A tandem would be, well a rear tandem axle without lift axle.

Do ya'll run 22.5's or 24.5's?

It does vary from state to state. For example Georgia doesn't recognize a lift axle on a tri-axle, hence they only run tandems.:beatsme

There are virtually no pup trailers used in my area. It's either tri-axles or end dumps for moving material at unit pay rates - per ton or CY. Tandems are used in excavation and such as they are easier to load and maneuver on site but you can't compete when the pay is by the ton with a tandem compared to a tri or end dump.

I lived overseas for a few years and the metric system is second nature now for me. I just assumed we understood the differences but we all know what happens when you assume...:rolleyes::D
 
JDOFMEMI

JDOFMEMI

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CM

What do you actually get to carry on those 46K rears? We only get 34K on a tandem group here.

For heavy haul we can permit 46K, to haul a non reduceable load, but not over 34K for normal use. We can get a 20K front, and the lift axle depends on wheelbase and the bridge formula.
 
T

TCS

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Feb 16, 2012
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76
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ct
Our W900L's are about 25' from axle 1 to axle 4 and we are permitted for 76,000lbs. The trucks are all factory setups with heavy duty single frames and cross members,18,000lb steering axle,18,000lb steerable lift axle and the tandems are 46,000lb with 8 bag air ride. With all aluminum wheels and lined dump bodies,475hp CATs and 13 speeds they all tare around 23,400 to 23,700lbs. BTW - My opinion is that the T-800 is a better all around truck for a triaxle than the WL's are. The T-800 has a better steering radius,better visibility and doesn't have the front frame horn extensions that sometimes break on the WL's.
 
CRAFT

CRAFT

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CM1995 said:
A tri-axle would be a tandem 46K rears, 20K lb lift axle and 20K lb fronts with floats............

Do ya'll run 22.5's or 24.5's?
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So the lift axle is rated 20k lbs .... and you run the 425 floats on there or the 385's or ? ..... and are they a caster style steering lift axle as well ??

We run only 11Rx24.5 16ply on the drives .... some of the big city trucks might be using the 22.5's ...... but because of the places we have to dump you need all the ground clearance you can get ...... the fronts are usually 22.5's only if they are the 425's or 385 floats .... but some don't have the big front axles and they use either [11R or 12R's] x 24.5's ............. :drinkup
 
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CM1995

CM1995

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JDOFMEMI said:
CM

What do you actually get to carry on those 46K rears? We only get 34K on a tandem group here.
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Jerry we are allowed a max of 20K per axle and I think 34K per tandem axle, however dump trucks, fuel trucks and concrete mixers have a special exemption and axle weight rating in AL. These trucks have a max allowable axle weight of 20K per, irregardless of the axle spacing. So a tri-axle's tandem would be allowed 20K lb per axle totaling 40K for a it's tandem plus another 20K for the lift axle.

CRAFT said:
So the lift axle is rated 20k lbs .... and you run the 425 floats on there or the 385's or ? ..... and are they a caster style steering lift axle as well ??
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Most run dual 22.5's on the lift axles and 24.5's on the tandem but a few run floats, they re-cap their steer tires and use them on the lift axle. Very, very few dump trucks around here run steerable lift axles.
 
JDOFMEMI

JDOFMEMI

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So you can go 80K on a Triaxle, if the axle ratings are there. Wow! Here in Kalifornia, we can't get that on an end dump without it being at least 38 ft long.
 
CM1995

CM1995

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An excerpt from AL Code - http://www.dot.state.al.us/maweb/doc/Title32Chapter9.pdf

e. Dump trucks, dump trailers, concrete mixing trucks, fuel oil, gasoline trucks, and trucks designated and constructed for special type work or use shall not be made to conform to the axle spacing requirements of paragraph (4)c of this section; provided, that the vehicle shall be limited to a weight of 20,000 pounds per axle plus scale tolerances; and, provided further, that the maximum gross weight of the vehicles shall not exceed the maximum weight allowed by this section for the appropriate number of axles, irrespective of the distance between axles, plus allowable scale tolerances. All axles shall be brake equipped. Concrete mixing trucks which operate within 50 miles of their home base shall not be required to conform to the requirements of paragraph (4)a of this section; provided, that the vehicles shall be limited to a maximum load of the rated capacity of the concrete mixer, the true gross load not to exceed 66,000 pounds, and all the vehicles shall have at least three axles, each with brake equipped wheels. It shall be a violation if the vehicles named under this subdivision travel upon bridges designated and posted by the Transportation Director as incapable of carrying the load.
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A tandem dump can carry 60K gross and a concrete truck can gross 66K. I didn't know that about the concrete truck until I read the code above. Also if a driver can shift the load to get an axle or axles to 20K or less in the presence of the DOT officer, there is no violation.
 
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