Wood Variability Effects in Structural Assessment

by Robert T. Brooks, Engineering Data Management, Inc, United States,
Jozsef Bodig, Engineering Data Management, Inc, United States,

Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials


Engineers evaluating the load carrying capacities of in-service wood structures commonly determine the strength and stiffness properties of structural wood members by various assessment methods, each containing some degree of error. The major component of this error relates to the original material variability and uncertainties associated with the assessment method. Three commonly used strength assessment methods are compared by their errors in predicting individual member strength. The magnitude of this error associated with each assessment method is shown to effect the reliability of maintenance decisions concerning needed changeouts and repairs of individual structural members.

Subject Headings: Wood | Wood structures | Wood construction | Strength of materials | Stiffening | Uncertainty principles | Construction methods | Errors (statistics)

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