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plywood on exterior walls

plywood on exterior walls

plywood on exterior walls

(OP)
What is the benefit of installing the exterior plywood vertically as opposed to a horzintal in a running pattern (like brick or block) other than speed of installation?

RE: plywood on exterior walls

As far as a lateral force resisting system goes-
You may have to add blocking at the edge of the plywood depending on what shear values you are looking to obtain. So possibly speed and materials. Or atleast I believe depending on what code you are using.

EIT

RE: plywood on exterior walls

You should get the APA Product Data & Application Binder. This has all their publications for cheap and covers these issues as well as design tables.

In "Introduction to Lateral Design" Table 1 the footnote says this:
Design for diaphrahm stresses depends on direction of continuous panel joints with reference to load, not on direction of long dimension of sheet. Continuous framing may be in either direction for blocked diaphragms. It then goes on to describe 6 cases.

For a random example from the table, Case I (No unblocked edges or continuous joints parallel to load) has a shear of 165 plf. All the other cases are the same at 125plf.

 

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