22
Assuming the 1200mm by 800mm pallet is the standard for the EU, it would be 10 lengthwise by three across, stacking them with the narrow side facing to the front and back of the container.
30 (two rows of 15 if the fork entry is on the 48 inch side and two 48 inch pallets can fit next to each other in the trailer).or26 (two rows of 13 if the fork entry is on the 40 inch side).The above assumes one layer of pallets (no stacking).
It depends how thick the pallets are.
12 inches * 40 = 480 inches
22 chep standard pallets can be loaded into a 40ft container providing the stock does not overhang the pallets allowing them to be loaded flush together
27 pallets
28
22
26 standard size pallets
22
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.
20 Modules/Pallet -- 28 Pallets/Container -- 560 Modules
20
24
If they are 4' x 4' then you can fit 2 rows of 12, or 24 pallets. If you can stack the freight 2 high, you can get 48 pallets in there.
26