dimensions are based on the maximum material thicknesses and fastener sizes indicated,it is suggested that in cases where many duplicate connections with less than maximummaterial or fasteners are required, savings can be effected if these dimensions aredeveloped from specific bevels, beam sizes, and fitting thicknesses.

Skewed single plate and skewed end plate connections, shown in Figures 9-46 and9-47, provide a simple, direct connection with a minimum of fittings and multiplepunching requirements. When fillet welded, these connections may be used for skews upto 30° (or a slope of 65⁄16 in 12) provided the root opening formed does not exceed 3⁄16-in. asspecified in AWS D1.1 paragraph 3.3.1. For skew angles greater than 30°, see AWS D1.1,Section 2.11.

The maximum beam web thickness which may be supported is a function of themaximum root opening and the angle of skew. If the thickness of the beam web weresuch that a larger root opening were encountered, the skewed single plate or the webconnecting to the skewed end plate may be beveled, as shown in Figures 9-46b and 9-47b.Since no root opening occurs with the bevel, there is no limitation on the thickness of thebeam web. However, beveling, especially of the beam web, requires careful finishing andis an expensive procedure which may outweigh its advantages.

The design of skewed end plate connections is similar to that discussed previously in“Shear End-Plate Connections” in this Part. However, when the gage of the bolts is notcentered on the beam web, this eccentric loading should be considered. The design of

Table 9-13.Minimum Radius for Cold Bending

ASTMDesignation

Thickness, in.

Up to 1⁄⁄4 Over 1⁄⁄4 to 1⁄⁄2 Over 1⁄⁄2 to 1 Over 1 to 11⁄⁄2 Over 11⁄⁄2 to 2

A36 11⁄2 t 11⁄2 t 2t 3t 4t

A242 2t 3t 5t —a —a

A514b 2t 2t 2t 3t 3t

A529 2t 2t — — —

A572c

Gr. 42 2t 2t 3t 4t 5t

Gr. 50 21⁄2t 21⁄2t 4t —a —a

Gr. 60 31⁄2t 31⁄2t 6t —a —

Gr. 65 4t 4t —a —a —

A588 2t 3t 5t —a —a

A852b 2t 2t 3t 3t 3t

a It is recommended that steel in this thickness range be bent hot. Hot bending, however, may result in a decrease in the as-rolled mechanical properties.

b The mechanical properties of ASTM A514 and A852 steels result from a quench-and-temper operation. Hotbending may adversely affect these mechanical properties. If necessary to hot-bend, fabricator should discuss procedure with the steel supplier.

c Thickness may be restricted because of columbium content. Consult supplier.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION

SPECIAL CONSIDERATIONS FOR SIMPLE SHEAR CONNECTIONS 9 - 219