1 Your liver makes and stores fuel. 2  Your liver makes glucose from carbohydrates (say car-bow-hi-drates) that you eat, such as ones in bread, fruit and dairy products. 3  Some of this glucose travels in the blood to the rest of the body where it is used for energy. For example the liver makes urea (say you-rear) from parts of proteins that can't be used. 2  It is poisonous so the body has to remove it. 3  Blood collects this urea from the liver and sends it to the kidneys. 4  They filter urea from the blood and it is then expelled from the body as waste in your urine.
Using any of these trailers Flatbed, Step-deck or RGN, the actual height of the load including the trailer height can not exceed 13' 6, the width can not exceed 8' 6 and the total gross weight including tractor (truck), trailer and cargo can not exceed 80,000 lbs. to be considered a legal load.
I just wanted to add some information about the legal weight of a semi truck: In the US: There are one set of rules that are set by the US Federal government and they say that for highways that are federally funded (interstates and some other bigger roads) the minimum weight that states HAVE TO allow is 80,000 lbs.