ASTM D7147-21 - 1.7.2021
 
1. Scope

1.1?This specification covers a procedure for evaluating metal devices used for wood-to-wood, wood-to-concrete, wood-to-concrete masonry, and wood-to-steel connections. This method is intended for use with devices used to connect joists, beams, and girders together. These devices are commonly described as joist hangers.

1.2?This specification describes test methods for evaluating the capacities of joist hangers subject to vertical and torsional loading.

1.3?This specification provides a method of assigning allowable loads to joist hangers based on measured strength and deformation characteristics. Information obtained by the provisions of this specification is applicable to design when using the Allowable Stress Design method.

1.4?UnitsThe 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.

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.

 
2. Referenced Documents

F606-14

Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets

E4-24

Standard Practices for Force Calibration and Verification of Testing Machines

F1470-24

Standard Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection

F1575-17

Standard Test Method for Determining Bending Yield Moment of Nails

ACI 318/318R-08

Building Code Requirements for Structural Concrete and Commentary

E575-05(2026)

Standard Practice for Reporting Data from Structural Tests of Building Constructions, Elements, Connections, and Assemblies

E8-04

Standard Test Methods for Tension Testing of Metallic Materials

D5055-24

Standard Specification for Establishing and Monitoring Structural Capacities of Prefabricated Wood I-Joists

D4442-20(2025)

Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood-Based Materials

D3737-18(2023)e1

Standard Practice for Establishing Allowable Properties for Structural Glued Laminated Timber (Glulam) (Includes all amendments and changes 11/9/2023).

D2395-17(2022)

Standard Test Methods for Density and Specific Gravity (Relative Density) of Wood and Wood-Based Materials

D5456-24

Standard Specification for Evaluation of Structural Composite Lumber Products

D7438-20(2025)

Standard Practice for Field Calibration and Application of Hand-Held Moisture Meters

C31/C31M-26a

Standard Practice for Making and Curing Concrete Test Specimens in the Field (Includes all amendments and changes 3/3/2026).

C39/C39M-26

Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens

C1314-24

Standard Test Method for Compressive Strength of Masonry Prisms

D9-20

Standard Terminology Relating to Wood and Wood-Based Products