It is important for designers to understand how to use IBC Table 2306.3.1 and UBC
Table 23-II-H, "Allowable Shear for Horizontal Wood Structural Panel Diaphragms."
This table can also be found in the Allowable Stress Design (ASD) Manual for Engineered Wood Construction
and in the back of the Design of Wood Structures textbook
(Breyer, Fridley and Cobeen, 1999).
table relates sheathing thickness, nail size and spacing, sheathing grade
and allowable unit shear to enable determination of an appropriate construction
configuration. Depending on the given information, the table may be used in
different ways to find the unknown design parameters.
It is important to note that the footnotes of the table play a key role in the design process. The footnotes relate information on intermediate nail spacing (at panel edges), framing member thickness, and alternate allowable unit shear values. Often times the footnotes may dictate the design of the diaphragm.
example demonstrates how the table may be used to find the necessary information
for design. Keep in mind this is only one approach for using IBC Table 2306.3.1 and UBC Table