I'll take a stab at the bricks...
Bricks need to be fairly dry when they are laid. As the masons lay the brick they are expecting the mortar to set up fast enough for them to continue laying courses of brick up the wall. Wet bricks may force the mason to slow down, move to a different location in the wall, or change his mix.
Changing the mix may affect the color of the mortar after it is dry. Moving means moving scaffolding or erecting more. Slowing down is not a good option.
I have seen walls buckle and need to be torn down because of wet bricks. This all costs time and money. When the bricks arrive at my site I want them dry, and the masons cover the bricks every night. Also brick change color as they cure after leaving the plant. If they get wet they will take longer to cure and could affect the color.
Most of the time bricks are not on pallets. They are made into cubes. The bricks are stacked in such a way that it leaves holes in the cube for the fork lift forks. Then banded, and now wrapped in plastic.
Slingblade wrote in news: snipped-for-privacy@4ax.com: