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Page 23
<br />Table 1L3.1 Applicability of Adjustment Factors for Connections
<br />Lateral Loads
<br />Dowel -type Fasteners
<br />(e.g. bolts, lag screws, wood screws,
<br />Z = Z x
<br />Cu
<br />C"
<br />C,
<br />Cs
<br />C, -
<br />Cag -
<br />C,, C,,, 3.32 0.65
<br />a
<br />nails, spikes, drift bolts, & drill ins)
<br />Split Ring and Shear Plate
<br />l' = P x
<br />Cc
<br />CM
<br />C,
<br />C,
<br />Ca Cd
<br />- C,,
<br />- - 3.32 0.65
<br />A
<br />Connectors
<br />Q = Q x
<br />Co
<br />CM
<br />C,
<br />CII
<br />C, Cd
<br />- -
<br />- - 3.32 0.65
<br />X
<br />1' = P x
<br />Cn
<br />CM
<br />C,
<br />-
<br />- -
<br />- C,tr
<br />- - 3.32 0.65
<br />X
<br />Timber Rivets
<br />Q = Q x
<br />Cu
<br />CM
<br />C,
<br />-
<br />s
<br />C. -
<br />- C.�
<br />�
<br />- - 3.3_ 0.65
<br />X
<br />Spike Grids
<br />Z = Z x
<br />I Cu
<br />CM
<br />C,
<br />-
<br />C, -
<br />- -
<br />- - 3.32 0.65
<br />l
<br />Withdra,..al Loads
<br />0 Nails, spikes, lag screws, W = W x Co CM C, - - - C, - - C,,, 3.32 0.65 X
<br />wood screws, & drift pins
<br />I the load duration factor. Ci, shall not exceed 1 tt for connectxns tsee 11 3 ;)
<br />2 ,'he wet service factor. CM, shall not apply to too -nails loaded in withdrawal (see 12.5 4.1)-
<br />3. Specific mfonnanon concerning geometry factors C.,, penetration depth factors C,t, end gram factors, C_ metal side plate factors. C., diaphragm factors, Cb.
<br />and toe -nail factors. C_ is provided in CLaptcrs 12, 13, and 14.
<br />4 The metal side plate factor, C., is only applied when rivet capacity (K, Q,) controls ( see Chapter 14 )
<br />5 the geometry factor, C, is only applied wfeen wood capacity, Q., controls Isee Chapter 14►
<br />1L8.2 Load Duration Factor, Co (ASD Only)
<br />Reference design values shall be multiplied by the
<br />load duration factors, CL) <_ 1.6, specified in 2.3.2 and
<br />Appendix B, except when the capacity of the connec-
<br />tion is controlled by metal strength or strength of con-
<br />crete/masonry (see 11.2.3, 11.2.4, and Appendix B.3)_
<br />The impact load duration factor shall not apply to con-
<br />nections.
<br />11.$.3 Wet Service Factor, Cm
<br />Reference design values are for connections in
<br />wood seasoned to a moisture content of 19% or less and
<br />used under continuously dry conditions, as in most cov-
<br />ered structures. For connections in wood that is unsea-
<br />soned or partially seasoned, or when connections are
<br />exposed to wet service conditions in use, reference de-
<br />sign values shall be multiplied by the wet service fac-
<br />tors, CM, specified in Table 11.3.3.
<br />1L3A Temperature Factor, Ct
<br />Reference design values shall be multiplied by the
<br />temperature factors, C„ in Table 11.3.4 for connections
<br />that will experience sustained exposure to elevated
<br />temperatures up to 150*F (see Appendix Q.
<br />
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