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// CODE SNIPPET

1711.1 Joist Hangers

Building Code 2012 of South Holland > 17 Special Inspections and Tests > 1711 Material and Test Standards > 1711.1 Joist Hangers
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Testing of joist hangers shall be in accordance with Sections 1711.1.1 through 1711.1.3, as applicable.

1711.1.1 General

The vertical load-bearing capacity, torsional moment capacity and deflection characteristics of joist hangers shall be determined in accordance with ASTM D 1761 using lumber having a specific gravity of 0.49 or greater, but not greater than 0.55, as determined in accordance with AF&PA; NDS for the joist and headers.
Exception: The joist length shall not be required to exceed 24 inches (610 mm).

1711.1.2 Vertical Load Capacity for Joist Hangers

The vertical load-bearing capacity for the joist hanger shall be determined by testing a minimum of three joist hanger assemblies as specified in ASTM D 1761. If the ultimate vertical load for any one of the tests varies more than 20 percent from the average ultimate vertical load, at least three additional tests shall be conducted. The allowable vertical load-bearing of the joist hanger shall be the lowest value determined from the following:
  1. The lowest ultimate vertical load for a single hanger from any test divided by three (where three tests are conducted and each ultimate vertical load does not vary more than 20 percent from the average ultimate vertical load).
  2. The average ultimate vertical load for a single hanger from all tests divided by three (where six or more tests are conducted).
  3. The average from all tests of the vertical loads that produce a vertical movement of the joist with respect to the header of 1/8 inch (3.2 mm).
  4. The sum of the allowable design loads for nails or other fasteners utilized to secure the joist hanger to the wood members and allowable bearing loads that contribute to the capacity of the hanger.
  5. The allowable design load for the wood members forming the connection.

1711.1.2.1 Design Value Modifications for Joist Hangers

Allowable design values for joist hangers that are determined by Item 4 or 5 in Section 1711.1.2 shall be permitted to be modified by the appropriate load duration factors as specified in AF&PA NDS but shall not exceed the direct loads as determined by Item 1, 2 or 3 in Section 1711.1.2. Allowable design values determined by Item 1, 2 or 3 in Section 1711.1.2 shall not be modified by load duration factors.

1711.1.3 Torsional Moment Capacity for Joist Hangers

The torsional moment capacity for the joist hanger shall be determined by testing at least three joist hanger assemblies as specified in ASTM D 1761. The allowable torsional moment of the joist hanger shall be the average torsional moment at which the lateral movement of the top or bottom of the joist with respect to the original position of the joist is 1/8 inch (3.2 mm).

Related Code Sections


1711.1 Special Inspections and Tests, Joist Hangers
Testing of joist hangers shall be in accordance with Sections 1711.1.1 through 1711.1.3, as applicable ...
Building Code 2012 of South Holland > 17 Special Inspections and Tests > 1711 Material and Test Standards > 1711.1 Joist Hangers
2303.5 Wood, Test Standard for Joist Hangers
Joist hangers shall be in accordance with ASTM D7147 ...
Building Code 2018 of South Holland > 23 Wood > 2303 Minimum Standards and Quality > 2303.5 Test Standard for Joist Hangers
2303.5 Wood, Test Standard for Joist Hangers
For the required test standards for joist hangers see Section 1711.1 ...
Building Code 2012 of South Holland > 23 Wood > 2303 Minimum Standards and Quality > 2303.5 Test Standard for Joist Hangers
2304.10.3 Wood, Joist Hangers and Framing Anchors
Connections depending on joist hangers or framing anchors, ties and other mechanical fastenings not otherwise covered are permitted where approved ...
Building Code 2018 of South Holland > 23 Wood > 2304 General Construction Requirements > 2304.10 Connectors and Fasteners > 2304.10.3 Joist Hangers and Framing Anchors
2304.9.3 Wood, Joist Hangers and Framing Anchors
Connections depending on joist hangers or framing anchors, ties and other mechanical fastenings not otherwise covered are permitted where approved ...
Building Code 2012 of South Holland > 23 Wood > 2304 General Construction Requirements > 2304.9 Connectors and Fasteners > 2304.9.3 Joist Hangers and Framing Anchors
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