What's legal is that the load is secured so that it stays on the trailer and your axle and gross weights are legal and distributed in accordance with bridge law formula. That's pretty much the extent as far as the law is concerned. Assuming you're running a van (dry or reefer, it doesn't really matter), you'll go from front to rear and slide your tandems as you need to in order to make that happen. You're only looking at 25,200 lbs. all told, so it shouldn't be a problem. I don't have much experience with dry van - I'm an open deck driver, but I do have some, running pallets of those wood pellets for wood stoves, grills, etc., and so I'll load the first two at the front, staggered all the way to the left, the next two will be staggered all the way to the right, and I'll repeat that pattern, rather than keeping them all centered in the trailer. Then you place your load locks after the last pallets.
27 pallets
Yes, If load the pallets sideways and double stack them you can fit 60 pallets on a 53' trailer
Depends on how you load them. If you load them 48 long it is 24 pallets. If you load them 40 long then it is 26-28 pallets. With more than 24 you have specific loading requirements you must adhere to.
28
26 standard size pallets
Using typical 4'x4' pallets, you can fit two rows of 13 pallets in a 53' box van, and can stack them however high your payload permits you to within 110 inches (the typical inside height of such a trailer). Typical retail trade distribution and logistics is supported by the use of 40" x 48" pallets. A typical 53 foot trailer will fit two rows of 15 pallets if the pallets are turned. It makes it more difficult to load and unload in that typical 40" x 48" pallets are designed to be lifted from the smaller of the two widths - 40" side. The pallets can not be lifted from the 48" side using common pallet jack lift equipment - pump jacks and/or battery operated jacks. Ease of loading and unloading can be best supported by the use of counter-balance or sit-down fork trucks granted that the height of the mask permits entry into the trailer.
48 feet/4 feet =12 x 2 sides of the trailer =24 pallets.
Trailer 53' - 110" high - 2 rows of 15 stacked 18 high for a total of 540 pallets
A 48 foot trailer can hold about 24 standard pallets. Each pallet is 4 feet by 4 feet, and the trailer is about 8 feet wide.
22
Trailer 53' - 110" high - 2 rows of 15 stacked 18 high for a total of 540 pallets
Depends on what you're loading.