It depends on where you're at. In North America, they'll typically range from 27 to 53 feet in length, with the 53' dry and refrigerated vans and 48 ft. flatbeds and tankers being the most common.
450
The interior dimensions of a 53' semi trailer is 52 feet in length and 99 inches in width. The capacity is 4050 cubic feet.
1375
70 feet
a semi flat low bed trailer is about 4 to 4.5 feet above from the ground.
3676
Assuming you are going to stack the contents the same height as they were in the semi trucks, and that each semi trailer was 53 feet long by 8 feet wide, it would take 848 square feet.
Average is 70 feet
The number of bales that can fit onto a semi will depend on the width and length of the semi's trailer and the overall cubic feet of each bale. A standard semi trailer in North America can be 8 feet to 8 feet 6 inches wide by 13 feet 6 inches high and anywhere from 28 to 53 feet long. Small square hay bales are usually 5.25 to 6 cubic feet. So if multiple the height by width, by length, you'll get the cubic feet of the trailer, you then divide that number by the cubic feet of the hay bales to figure out how many will fit in each size of trailer.
That really depends on the length of the trailer itself. It can range anywhere from 32 feet long to over 53 feet.
4054.5
a lot