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(1) "Mass timber" means a structural element of Type IV construction primarily of solid, built-up, panelized or engineered wood products that meet minimum cross section dimensions of Type IV construction.
(2) "Non-combustible protection" (for mass timber) means non-combustible material in accordance with IBC Section 703.5, designed to increase the fire-resistance rating and delay the combustion of mass timber.
(3) "Wall, load-bearing" means any wall meeting either of the following classifications:
(a) any metal or wood stud wall that supports more than 100 pounds per linear foot (1459 N/m) of vertical load in addition to its own weight; or
(b) any masonry or concrete, or mass timber wall that supports more than 200 pounds per linear foot (2919 N/m) of vertical load in addition to its own weight.