![Wood Diaphragm Design Based on NDS 2005 1 Wood Diaphragm Design Based on NDS 2005](https://excel.civilmdc.com/wp-content/uploads/2021/12/Wood-Diaphragm-Design-Based-on-NDS-2005.png)
Diaphragms are a roof, floor or other system transferring lateral forces applied to a building to the vertical elements, such as the shear walls. … The construction requirements and load capacities of WSP sheathed diaphragms are found in the American Wood Council’s Special Design Provisions for Wind and Seismic (SDPWS).