Standard Specification for 258-in. and 4-in. Diameter Metal Shear Plates for Use in Wood Constructions
This specification covers standardizing the dimensions and materials for the manufacture of steel or cast iron shear plates used in the fabrication of connections in wood constructions. This specification covers the two basic diameters of metal shear plates commonly used in North American timber construction. Shear plates shall be free from any casting defects that would hinder normal installation and performance. Shear plates shall conform to the specified requirements for the following: (1) marking (2) nail attachment holes, (3) draft casting on the rim and on the hub, (4) central bolt or lag screw holes, (5) furnishing with or without galvanization, and (6) fit and finish. The geometry and dimensional requirements for stamped steel shear plates and cast iron shear plates are specified and illustrated.
1.1 This specification covers standardizing the dimensions and materials for the manufacture of 25/8 and 4-in. diameter steel or cast iron shear plates used in the fabrication of connections in wood constructions. The referencing of this specification in design, construction, and purchase order documents gives the using parties assurance that the shear plates to be used in an assembly meet minimum materials quality standards and that dimensions for fabrication and finish can be relied on to ensure connection performance. This specification provides regulatory agencies with a set of standards by which to judge the acceptability of shear plates encountered in the field and in fabricators' shops.
1.2 The values stated in inch-pound units are to be regarded as standard. The values in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 Safety Hazards—There are no known hazards with the use of this specification. It is necessary that the products manufactured to this specification not be brittle or difficult to install with proper tools.
1.4 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.
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