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TABLE 4 OF ARTICLE 8 <br /> ALLOWABLE VALUES OF NEW MATERIALS USED <br /> IN CONJUNCTION WITH EXISTING CONSTRUCTION <br /> NEW MATERIALS OR CONFIGURATION ALLOWABLE VALUES <br /> OF MATERIALS <br /> 1. Horizontal Diaphragms Same as specified in Table No. <br /> Plywood sheathing applied 25 -J of the Building Code for <br /> directly over existing blocked diaphragms. <br /> straight sheathing with ends <br /> of plywood sheets bearing on <br /> joists or rafters and edges of <br /> . plywood located on center of <br /> individual sheathing boards. <br /> 2. Shear Walls <br /> a. Plywood sheathing applied Same as values specified in <br /> directly over existing wood Table No.25 -K of the Building <br /> studs.(No value shall be given Code for shear walls. <br /> to plywood applied over <br /> existing plaster or wood <br /> sheathing.) <br /> b. Dry wall or plaster 75 percent of the values <br /> applied directly over existing specified in Table 47 -I of the <br /> wood studs. Building Code. <br /> c. Dry wall or plaster 33 1/3 percent of the values <br /> applied to plywood sheathing specified in Table No. 47 -I of <br /> over existing wood studs. the Building Code. <br /> 20 <br />