Northridge Earthquake Field Investigations: Statistical Analysis of Woodframe Damage

The objective of the Field Investigations task in the CUREE-Caltech Woodframe Project was to analyze Northridge Earthquake damage data to clarify important relationships for use in other elements of the Woodframe Project as follows:
1. The Testing and Analysis Element to define and fine-tune testing needs
2. The Codes and Standards Elements to develop new design guidelines and Code provisions
3. The Economic Aspects Element to improve loss estimation for woodframe buildings
4. The Education and Outreach Element to develop education tools for various constituencies

This report focuses on residential buildings, though many other occupancies are commonly built of wood as well. This report also provides background material for other research about woodframe structures, which is the predominant type of residential construction in the US.