Amend this table as follows:

Revise all references in the table to one-half-inch gypsum board and replace with five-eighths-inch-thick type X gypsum board.

Revise line two of the Material column to read as follows:

Not less than one layer five-eighths inch type X gypsum board for nominal dimensional lumber or two layers of gypsum board as required by ICC Report ESR 1336 or as required by other proprietary research reports for specific engineered I joists which achieve a one-hour rated assembly.