1.1 General—This specification gives procedures for establishing, monitoring, and reevaluating structural capacities of prefabricated wood I-joists. Capacities considered are shear, reaction, moment, and stiffness. Procedures for establishing common details are given and certain design considerations specific to wood I-joists are itemized.
1.2 Contents of the Standard—An index and brief description of the main features of this specification are given in X2.1.1.
1.3 Development of the Standard—The development and intent of this specification is discussed in Appendix X2.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. A specific precautionary statement is given in
6.1.1.5.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D5055-19e1 Referenced Document
ASTM D198 Standard Test Methods of Static Tests of Lumber in Structural Sizes
ASTM D1990 Standard Practice for Establishing Allowable Properties for Visually-Graded Dimension Lumber from In-Grade Tests of Full-Size Specimens*, 2019-10-01 Update
ASTM D245 Standard Practice for Establishing Structural Grades and Related Allowable Properties for Visually Graded Lumber*, 2022-02-01 Update
ASTM D2559 Standard Specification for Adhesives for Bonded Structural Wood Products for Use Under Exterior Exposure Conditions*, 2024-04-20 Update
ASTM D2915 Standard Practice for Evaluating Allowable Properties for Grades of Structural Lumber
ASTM D4761 Standard Test Methods for Mechanical Properties of Lumber and Wood-Based Structural Materials*, 2019-04-01 Update
ASTM D5456 Standard Specification for Evaluation of Structural Composite Lumber Products
ASTM D5457 Standard Specification for Computing the Reference Resistance of Wood-Based Materials and Structural Connections for Load and Resistance Factor Design
ASTM D7247 Standard Test Method for Evaluating the Shear Strength of Adhesive Bonds in Laminated Wood Products at Elevated Temperatures
ASTM D7480 Standard Guide for Evaluating the Attributes of a Forest Management Plan*, 2021-10-01 Update
ASTM E4 Standard Practices for Force Verification of Testing Machines
ASTM E529 Standard Guide for Conducting Flexural Tests on Beams and Girders for Building Construction
ASTM E699 Standard Criteria for Evaluation of Agencies Involved in Testing, Quality Assurance, and Evaluating Building Components in Accordance with Test Methods Promulgated by ASTM Committee E-6