Abstract
This chapter describes the strength of moment end-plate connections with multiple bolt rows at the beam tension flange. A design method for the multiple row, eight bolts at the tension flange; moment end-plate connection is explained in this chapter. The method uses yield-line theory to determine plate size and the modified Kennedy method, including prying force effects, to determine bolt size. In North America, moment end-plate connections are used primarily in pre-engineered metal buildings. To reduce inventory costs, manufacturers currently attempt to stock a minimum number of bolt diameters. The required strength for a connection is then obtained by increasing the number of bolt rows at the tension flange from the usual one or two to as many as six, rather than by the more traditional method of increasing the bolt diameter. This increase in bolt rows significantly affects the complexity of the design procedure. This chapter explains the design procedure for the eight bolt at the tension flange, extended, unstiffened, moment end-plate connection by using the Yieldline analysis to determine end-plate strength and the modified-Kennedy method is also used to estimate bolt forces including prying effects. The procedure is verified using data from ten tests..
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