total weight i can haul? legally
#2
11-22-2009, 02:19 AM
Bridge law
34,34, and 12 = 80,000lbs - look in a road atlas available at any fuel stop.
Or here Bridge Formula Weights Calculator - FHWA Freight Management and Operations
#3
11-22-2009, 02:36 AM
Join Date: Sep 2005
Location: Pittsburgh, PA
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34,34, and 12 = 80,000lbs - look in a road atlas available at any fuel stop.
Or here Bridge Formula Weights Calculator - FHWA Freight Management and Operations 12 on the steers 34 on the drivers 34 on the trailer tandems =80,000 GVW
#5
11-22-2009, 03:41 AM
To break it down a little further you can do the following:
12,000 - steer 17,000 - drive 1 17,000 - drive 2 17,000 - trailer 1 17,000 - trailer 1 These are assuming that you have a closed tandem on your trailer. If you have a spread axle it will be as follows: 12,000 - steer 17,000 - drive 1 17,000 - drive 2 20,000 - trailer 1 20,000 - trailer 2 You will need to permit for any weight over 80,000 gross. Even with a spread axle you are limited to 80,000 gross weight in most states without permitting for the additional weight.
#7
11-22-2009, 03:53 AM
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To break it down a little further you can do the following:
12,000 - steer 17,000 - drive 1 17,000 - drive 2 17,000 - trailer 1 17,000 - trailer 1 These are assuming that you have a closed tandem on your trailer. If you have a spread axle it will be as follows: 12,000 - steer 17,000 - drive 1 17,000 - drive 2 20,000 - trailer 1 20,000 - trailer 2 You will need to permit for any weight over 80,000 gross. Even with a spread axle you are limited to 80,000 gross weight in most states without permitting for the additional weight.
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#8
11-22-2009, 03:56 AM
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Legal if your front axle & tires are rated for it & your not over 80k gross, at least on the left coast where I run. You can even be 20k on the front- think cement mixers or heavy haul trucks with super singles on the steer.
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#9
11-22-2009, 07:00 AM
Gman is mostly right, but partly wrong. As for YOU.... 2 times 17k equals 34k. So what are you saying? Let's start from scratch. There is no such thing as a 17k allowance for EACH of two "closed" axles. It is a 34k limit for TANDEM axles, whether drive OR trailer. GMAN says 17k for EACH of two drive axles. Not really correct. IF there were only ONE.... it would have a limit of 20k (not just 17k.) Just like the example of the spread axle trailer, any single axle by itself has a 20k limit. When two axles are combined in a closed tandem, the total goes down to 34k. (versus 40k.) Steers are OFTEN allowed more than 12,000 lbs. Check your atlas, and you will find MANY states that allow 20k or the manufacturer's specs. I think the O.P just wanted to know the total legal weight of the entire combination (originally.) Answer? 80k lbs. He didn't specify whether he drove a single or double screw tractor. I suppose there ARE spread axle 53' boxes.... but, I don't recall whether I've seen one or not. If there are.... he needs to specify in order to get actual axle weight limits like he asked for. My biggest question is why he is asking US for this info? Don't they teach ANYTHING in CDL school anymore? :hellno:
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#10
11-22-2009, 12:01 PM
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Oh boy... where do I start? :hellno:
Gman is mostly right, but partly wrong. As for YOU.... 2 times 17k equals 34k. So what are you saying? [I]I'm saying that you can't have 33K on one axle in a closed tandem and 1K on the other. I'm too friggin lazy to look, but I think Cali is 20K max (unless you're a logging truck)[/I] Let's start from scratch. There is no such thing as a 17k allowance for EACH of two "closed" axles. It is a 34k limit for TANDEM axles, whether drive OR trailer. Wrong, see below GMAN says 17k for EACH of two drive axles. Not really correct. IF there were only ONE.... it would have a limit of 20k (not just 17k.) Just like the example of the spread axle trailer, any single axle by itself has a 20k limit. When two axles are combined in a closed tandem, the total goes down to 34k. (versus 40k.) 34K for the group, 20K max on one axle. In Cali it depends on the distance between the two (or more) axles in the group. You have to be over 10 ft before you get the full 40K with a spread. Steers are OFTEN allowed more than 12,000 lbs. Check your atlas, and you will find MANY states that allow 20k or the manufacturer's specs. Correct I think the O.P just wanted to know the total legal weight of the entire combination (originally.) Answer? 80k lbs. He didn't specify whether he drove a single or double screw tractor. I suppose there ARE spread axle 53' boxes.... but, I don't recall whether I've seen one or not. If there are.... he needs to specify in order to get actual axle weight limits like he asked for. [I]I see 53' spread axle dry vans every day. (Unless I'm up north where we have a 65' length limit)[/I] My biggest question is why he is asking US for this info? Don't they teach ANYTHING in CDL school anymore? :hellno: I agree with you (for once, don't let it go o your head) This guy is asking some ignorant questions,. Where is Big Wlesel when we need him?
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