ASTM D7147-21

Standard Specification for Testing and Establishing Allowable Loads of Joist Hangers

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STANDARD published on 1.7.2021

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The information about the standard:

Designation standards: ASTM D7147-21
Publication date standards: 1.7.2021
SKU: NS-1031159
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Building accessories

Annotation of standard text ASTM D7147-21 :

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 joist, beam, and girder connections. It describes test methods for evaluating the capacities of joist hangers subject to vertical and torsional loading. Also, this specification provides a method of assigning allowable loads to joist hangers based on measured strength and deformation characteristics. Test specimens consisting of a length of joist supported by joist hangers attached to two headers are subjected to a vertical load by a suitable testing machine, while the vertical load and corresponding deflection of the joist are measured and recorded to provide load-slip data.

Keywords:

connections, connectors, connectors for wood, hangers, hanger allowable loads, hanger capacities, hanger test, hanger testing, joist hangers, metal connectors, structural connectors, wood connections, wood connectors, wood to wood connectors,, ICS Number Code 91.190 (Building accessories)

Additional information

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
E4-21	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(2018)	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
D5055-19e1	Standard Specification for Establishing and Monitoring Structural Capacities of Prefabricated Wood I-Joists (Includes all amendments and changes 5/25/2023).
D4442-20	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
D5456-21e1	Standard Specification for Evaluation of Structural Composite Lumber Products (Includes all amendments and changes 6/9/2021).
D7438-20	Standard Practice for Field Calibration and Application of Hand-Held Moisture Meters
C31/C31M-24	Standard Practice for Making and Curing Concrete Test Specimens in the Field
C39/C39M-23	Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
C1314-23b	Standard Test Method for Compressive Strength of Masonry Prisms (Includes all amendments and changes 12/20/2023).
D9-20	Standard Terminology Relating to Wood and Wood-Based Products

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