CUREE: The Organization
CUREE is a non-profit organization devoted to the advancement of earthquake engineering research, education and implementation.
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Publication Downloads
Woodframe Project
NIST Technical Briefs
NEES Nonstructural Project
CUREE-Kajima Program

Publications: Research Reports: Woodframe Project
CUREE Publications Clearinghouse
Over of the course of the past 25 years, CUREE has produced a number of reports and other publications for the purposes of furthering civil engineering (particularly with earthquake engineering) for the purposed of research, education and implementation. Provided below is an archive of many of these publications, available for free download.

Research Reports
Northridge Meadows Apartment Collapse

CUREE-Caltech Woodframe Project

The CUREE-Caltech Woodframe Project consisted of coordinated engineering investigations and implementation activities whose objective was to significantly reduce earthquake losses to woodframe construction. The project was funded by the Federal Emergency Management Agency (FEMA) through a grant administered by the California Governors Office of Emergency Services.

[See complete list of Woodframe Project publications.]

W-26: Seismic Demands for Single- and Multi-Story Wood Buildings
by H. Krawinkler, F. Zareian, L. Ibarra, R. Medina, and S.-J. Lee; 2003; 146 pages.


Investigates seismic demands (deformations and forces) on the main components of the lateral-load resisting systems of woodframe construction by means of a number of inelastic time history studies of different structures and earthquakes.

Table of Content

1. Introduction
-- 1.1 Objective and Scope
-- 1.2 Purpose of Seismic Demand Evaluation
-- 1.3 Components of Seismic Demand Evaluation

2. Seismic Hazard
-- 2.1 Hazard Levels and Spectra Considered in this Study
-- 2.2 Ground Motions Used in this Study
-- 2.2.1 Selection of Ground Motions
-- 2.2.2 Scaling of Ground Motions
-- 2.2.3 Near-Fault Ground Motions

3. Experimental Evidence and Analytical Modeling
-- 3.1 Experimental Evidence for Analytical Modeling
-- 3.1.1 General Observations from Experimental Studies
-- 3.1.2 Deterioration Modes
-- 3.2 Analytical Modeling
-- 3.2.1 Important Parameters for Analytical Modeling
-- 3.2.2 Basic Hysteresis Model
-- 3.2.3 Modeling of Deterioration
-- 3.2.4 Range of Parameters Considered in Response Studies
-- 3.2.5 Calibration of Simplified Model
-- 3.2.6 P-Delta Effects – SDOF System

4. SDOF Demands, Conventional Approach
-- 4.1 SDOF Demands as Function of Elastic Period, T
-- 4.2 Incremental Dynamic Analysis Results for Selected Cases
-- 4.3 Collapse Statistics for Base Cases
-- 4.4 Drawbacks of Reliance on Period Controlled Conventional Approach

5. SDOF Demands, Performance Spectra
-- 5.1 Performance Spectra
-- 5.2 Statistical Evaluation of Performance Spectra
-- 5.3 Comprehensive Set of Performance Spectra for the 10/50 Hazard Level
-- 5.4 Effects of Various Parameters on Performance Spectra at 10/50 Hazard Level
-- 5.4.1 Sensitivity of Response to Three Models of Same Structure
-- 5.4.2 Effect of Ground Motion Scaling Technique on Performance Spectra
-- 5.4.3 Effect of Ki/Ku on Performance Spectra
-- 5.4.4 Effect of Post-Cap Strength Decrease (ac) on Performance Spectra
-- 5.4.5 Effect of Cap Displacement dc on Performance Spectra
-- 5.4.6 Effect of Ductility Capacity dc /dy on Performance Spectra
-- 5.4.7 Effect of Cyclic Deterioration g on Performance Spectra
-- 5.4.8 Effect of Fy/Fc on Performance Spectra
-- 5.4.9 Effect of P-Delta on Performance Spectra
-- 5.5 Values of W/Fc Associated With dc and With Collapse, 10/50 Hazard Level
-- 5.6 Performance Spectra for Different Hazard Levels
-- 5.6.1 Performance Spectra for Ordinary Ground Motions, 2/50 and 50/50 Hazard Levels
-- 5.6.2 Performance Spectra for Near-Fault Ground Motions, 10/50 Hazard Levels

6. MDOF Demands
-- 6.1 Structures Investigated
-- 6.2 The Equivalent SDOF System
-- 6.2.1 Properties of the Equivalent SDOF System
-- 6.2.2 Sensitivity of Equivalent SDOF Properties to Shape Vector
-- 6.2.3 P-Delta Effects for MDOF Systems
-- 6.3 Use of Performance Spectra for MDOF Demand Evaluation

7. Summary and Conclusions


File Download Type Size
CUREEpub_W-26 PDF 5.9 MB

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Consortium of Universities for Research in Earthquake Engineering
last updated 04.26.16