1. The normal legal gross weight of a 5 axle semi on a 9 ton route is 80,000 pounds. |
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The Normal (and maximum) legal weight is 73,280 pounds on a semi with 5 properly spaced axles on a 9 ton route.
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2. The normal legal weight of a single axle on a 10 ton route is 20,000 pounds. |
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A single axle is allowed 20,000 pounds providing the tires on the axle are the correct size and rating.
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3.
The legal tire weight of a truck tire is always the tire rating embossed on the tire
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You must know both the weight allowed by size and the manufacturer's tire rating. The legal weight is the lesser of the two, It wouldn't always be the rating.
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4.
A truck can be overweight on a wheel without being overweight on an axle
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Heavy cargo put on one side of the container (trailer) can put a wheel overweight without an axle weight violation.
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5.
Tandem axle weight distribution (each axle) is the same on all non restricted routes
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Maximum distribution is 18,000 on 9 ton and 20,000 on 10 ton. A tandem axle is allowed 34,000 pounds on both a 9 and 10 ton route. However the maximum weight of the individual axles making up the tandem configuration is different.
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6.
The gross weight chart gives you only a possible legal weight
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It's only possible to use the gross weight on the weight chart if all the other components of the truck are also legal. The measurements of other axle configurations or tire sizes on the truck may limit the gross weight to a lesser weight than the chart allows.
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7.
Winter weight increased limits require no transportation permit on Interstate highways
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A transportation permit is required on Interstate highways for the statutory winter weight increase (WLI). A permit is not required on state trunk highways.
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8.
Tire ratings allow you to exceed restricted axle weights when road posting are in force
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Even if the tire size or ratings allow more weight than the road posting allows, the posting cannot be exceeded.
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9. During spring road restrictions, city, county and township routes that are not posted are "5 ton" axle weight routes. |
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10.
Tridem axles are limited to a maximum of 15,000 pounds per axle in the tridem group. |
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The key criteria is if the axle configuration qualifies as a tridem by Minnesota statutes which identify a tridem as 3 axles spaced 9 feet or less.
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11.
Normally a 6 inch measurement on the gross weight chart allows you to go to the next foot. |
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Unless otherwise noted, anytime a measurement between axles reaches the 6 inch measurement you can round "up" to the next full number on the chart. However the 8 "plus" measurement is an exception. Any measurement over 8 feet and less than 9 feet is 8 "plus". You do not round to the nearest foot on that measurement.
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Normally anytime a measurement hits the 6 inch measurement you can round up to the next number of the gross weight chart. But not "always" as noted in the 8 plus measurement not the chart which is noted as an exception.
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12.
With 6 properly spaced axles, a semi can gross 80,000 pounds on a 9 ton route. |
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The key word is "properly spaced". The axles must be correctly configured.
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