You said the first row should be aware of the 0# pier, 1# pier, pier number, generally starting from the first pier or abutment number. And said that the 0# block is the first section of a pier pouring. It is generally expressed as 1# pier 0# block, n# block n# block.You're not the structure of each row are single pier I understand refers to the single bridge, down line some bridge is separated, so that the bridge is actually two pieces of the bridge, such a position to the two hanging basket, so also on pier two downstream. If you encounter an elevated ramp, it may not be 2, there will be more.
The 0# block is the first block above the main pier. Drawing on my computer
Because hanging blue is anchored in the pouring stage and then pouring the next paragraph, so the top of the pier to be poured 0# block, hanging blue can be installed. The 0# block is to be erected to support pouring. The 0# block is shaped like a T font.