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Feeders getting rid of pups for 40 footers???
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<blockquote data-quote="pickup" data-source="post: 932196"><p>Okay , BlueHdmc, you got me. i am mixing up terminology here. You are correct in what you refer to as the bridge law. I guess I am talking about "kingpin to rear axle law". Although as you will see or already know, the two laws have to be considered as being compliant with one can cause one to be non-compliant with the other if one drives a 53 footer.</p><p></p><p>Got this post from another site where someone explained it pretty well:</p><p></p><p>Again confusion concerning KPRA laws and the Bridge Law.</p><p></p><p>I believe you have a misunderstanding of Bridge Law and King Pin to Rear Axle laws. Drivers need to be aware of and understand both.</p><p></p><p>Basically the bridge law (Correct name is <strong>Federal Bridge Gross Weight Formula</strong>) is in place to prevent damage to bridges (And in some instances roads and is) because of concentrated weight due to close axle spacing <strong>WHEN LOADED</strong>. In a nutshell it sets a <strong>MINIMUM</strong> axle spacing for the loaded weight. An empty tractor/trailer <strong>CANNOT</strong> ever be over on the bridge law. You can do the formula for a particular weight and axle weight or you can take the exception (two consecutive sets of tandem axles may carry 34,000 pounds (15,000 kg) each if the overall distance between the first and last axles of these tandems is 36 feet or <strong>MORE</strong>). So the <strong>LARGER</strong> the axle spacing <strong>THE BETTER</strong>as far as the Bridge Law is concerned.</p><p></p><p>State King Pin to Rear Axle laws are designed to keep the <strong>king pin to rear axle distance short</strong> (As compared to the Bridge law keeping them closer as weight increases), and <strong>WEIGHT IS NOT</strong> a consideration. They are designed to limit off tracking in turns and curves.</p><p></p><p>Visualize a T/T (W/48' trailer) a perfect world 80,000 with 12,000 steers, 34,000 drives and 34,000 trailer with the fifth wheel slid all the way forward and trailer tandems all the way forward. He is going to get hammered by the "Bridge Law", because the axles are too close and the weight is concentrated.</p><p></p><p>Visualize the same T/T (W/48' trailer) empty. There is no bridge law problem as he has no weight to consider other than the T/T and it isn't enough to be considered under the Bridge Law.</p><p></p><p>Now visualize a T/T (W/53' trailer) a perfect world 80,000 with 12,000 steers, 34,000 drives and 34,000 trailer with trailer tandems all the way to the rear. His axle spacings are <strong>so large</strong> that he cannot have a Bridge Law problem, but his <strong>king pin to rear axle is so large</strong> that there is likely a problem with a state's King Pin to Rear Axle law.</p><p></p><p>Visualize the same T/T (W/53' trailer) empty with trailer tandems all the way to the rear. He still has a Kingpin to Rear Axle problem even though he is empty and again he cannot have a Bridge Law problem.</p><p></p><p>Bottom line. Federal Bridge Law <strong>is</strong> weight dependent</p><p></p><p>King Pin to Rear Axle laws <strong>are not</strong> weight dependent.</p><p style="text-align: right"></p></blockquote><p></p>
[QUOTE="pickup, post: 932196"] Okay , BlueHdmc, you got me. i am mixing up terminology here. You are correct in what you refer to as the bridge law. I guess I am talking about "kingpin to rear axle law". Although as you will see or already know, the two laws have to be considered as being compliant with one can cause one to be non-compliant with the other if one drives a 53 footer. Got this post from another site where someone explained it pretty well: Again confusion concerning KPRA laws and the Bridge Law. I believe you have a misunderstanding of Bridge Law and King Pin to Rear Axle laws. Drivers need to be aware of and understand both. Basically the bridge law (Correct name is [B]Federal Bridge Gross Weight Formula[/B]) is in place to prevent damage to bridges (And in some instances roads and is) because of concentrated weight due to close axle spacing [B]WHEN LOADED[/B]. In a nutshell it sets a [B]MINIMUM[/B] axle spacing for the loaded weight. An empty tractor/trailer [B]CANNOT[/B] ever be over on the bridge law. You can do the formula for a particular weight and axle weight or you can take the exception (two consecutive sets of tandem axles may carry 34,000 pounds (15,000 kg) each if the overall distance between the first and last axles of these tandems is 36 feet or [B]MORE[/B]). So the [B]LARGER[/B] the axle spacing [B]THE BETTER[/B]as far as the Bridge Law is concerned. State King Pin to Rear Axle laws are designed to keep the [B]king pin to rear axle distance short[/B] (As compared to the Bridge law keeping them closer as weight increases), and [B]WEIGHT IS NOT[/B] a consideration. They are designed to limit off tracking in turns and curves. Visualize a T/T (W/48' trailer) a perfect world 80,000 with 12,000 steers, 34,000 drives and 34,000 trailer with the fifth wheel slid all the way forward and trailer tandems all the way forward. He is going to get hammered by the "Bridge Law", because the axles are too close and the weight is concentrated. Visualize the same T/T (W/48' trailer) empty. There is no bridge law problem as he has no weight to consider other than the T/T and it isn't enough to be considered under the Bridge Law. Now visualize a T/T (W/53' trailer) a perfect world 80,000 with 12,000 steers, 34,000 drives and 34,000 trailer with trailer tandems all the way to the rear. His axle spacings are [B]so large[/B] that he cannot have a Bridge Law problem, but his [B]king pin to rear axle is so large[/B] that there is likely a problem with a state's King Pin to Rear Axle law. Visualize the same T/T (W/53' trailer) empty with trailer tandems all the way to the rear. He still has a Kingpin to Rear Axle problem even though he is empty and again he cannot have a Bridge Law problem. Bottom line. Federal Bridge Law [B]is[/B] weight dependent King Pin to Rear Axle laws [B]are not[/B] weight dependent. [RIGHT][/RIGHT] [/QUOTE]
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Feeders getting rid of pups for 40 footers???
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