See the pallet in the picture below? If it is not clear to you what's wrong with it, you should consider exploring the details of LTL Carrier Packaging Rules as described in Item 680 of most Carrier Rules Tariffs.
As the pendulum has shifted, dramatically favoring the LTL carriers, shippers are realizing that if they don't consider changing their processes, they might very well be looking at increases well over 5% in 2018.
"Shippers will not move us through their facilities faster without economic consequences." Hence... Detention.