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Significance and Use
4.1 Connections are one of the most important components in wood construction. While the strength of metal bolts and of wood or wood-based products are ascertainable, a full evaluation of the performance of the combination is only possible through the testing of a complete connection assembly. Such variables as member thickness, member width, end and edge distances, type of bolt, fabrication tolerances, moisture content of the wood or wood-based product, preservative or fire-retardant treatment of the wood or wood-based product, species of wood, and/or material type and orientation of wood-based material may affect connection behavior. In order to develop design criteria for established bolt types as well as those under development, the effect of these variables on connection strength and stiffness must be known. The tests described herein permit the observation of data on the strength and stiffness of wood or wood-based connections, or both, under the influence of any or all of these factors.
1.1 These test methods cover procedures for evaluating the strength and stiffness of single-bolt connections in wood or wood-based products when subjected to short-term static loading. These test methods serve as a basis for determining the effects of various factors on the strength and stiffness of the connection. Long-term loading and creep displacement characteristics are outside the scope of this protocol.
1.2 These test methods are intended for situations employing a smooth shank bolt with a constant diameter.
1.3 The values stated in inch-pound units are to be regarded as the standard. The SI units in parentheses are for information only.
1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D2395 Test Methods for Specific Gravity of Wood and Wood-Based Materials
D2915 Practice for Sampling and Data-Analysis for Structural Wood and Wood-Based Products
D4442 Test Methods for Direct Moisture Content Measurement of Wood and Wood-Base Materials
E4 Practices for Force Verification of Testing Machines
F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
Federal SpecificationFed. Spec. FF-W-92 for Washers, Metal, Flat (Plain)
ICS Number Code 21.060.01 (Fasteners in general); 79.020 (Wood technology processes)
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ASTM D5652-15, Standard Test Methods for Single-Bolt Connections in Wood and Wood-Based Products, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top