Specifications - Laserfiche WebLink

Home Browse Search

'~''''''''.''-'.'''''''."'"'''''~'''.'''''.''~''~'''''~'\~~.~'>f'~~$~~~~~~*~1~~1~\~~~i~~~~;$11N~1~t~Wt~\~:t~t';f.\'W~::{{''';~;{';r;2'~"YP~:?,:!:%i;):~{fA't::.f/f;J'i:':''\\~~0;:it n fl ~ fl []. [l [], fl' n~ nil [J 'v n u [J II [ J 1 J [ ) tJ II TABLE 7.3.1 - APPLICABILITY OF ADJUSTMENT FACTORS FOR CONNECTIONS Z 1 2 >0 3 I~d 3 m 3 3 3 ~B~ tJQl a~~ ~~~ S~ ~~ ~s~ I~ !~ oaf:) Ei~ .O:5~ S -cl ...l < ~ g ~~:l S:l J:lllli i~~ ~ ~:! ~1lIi ... Eo! ~ J:l - (c:i - (c,,) - BOLTS Z' .. (Z) (Co) (CJ (Ca) . . . . . LAG SCREWS W' .. (W) (Cn) (CM) (CJ . . . (C,,) . . . Z' .. (Z) (Cn) (CM) (CJ (c,,) (CA) (CcIl (Ce;> . . . SPIlT RING and SHBAll po .. (P) (Cn) (CM) (CJ ~~~ (CA) (Ceil . (C,t> . . PLATB CONNECTORS Q' .. (Q) (Co) (CM) (CJ ( ) (Ca) (Ceil . . . . WOOD SCREWS W' .. (W) (Co) (Cw (CJ . . . . . . . Z' .. (Z) (Cn) (~) (CJ . . (Ceil (C,J . , . NAlLS and SPOOlS IN' .. (W) (Cn) (~) (CJ . . . . . . ~~ Z' .. (Z) (CD) (Ct.t) (CJ . . (C<tJ (C,,,) . lCII) MBTAL PLATH CONNJ!Cl'ORS ' Z'.. (Z) (CD) (CM) (CJ . . . , . . . DRIFl' BOLTS and IN' .. (W) (Cn) (CM> (CJ . . . (c.,> . . . DlUFl' PINS Z' .. (Z) (Ct>) (CM> (CJ (<;) (CA) (Ceil . (c;~ . . . SPlKE GRIDS Z' .. (Z) (CD) (eM) (et> . (CA) . . . . . 1. The load duration t&ctor. Ct> lball not exceed 1.6 .tOr COMCK:tiODl (ICe 7.3.2), 2, The Wit MrViOll factor. CM. llhall not apply to toe-nailll loaded in withdrawal (100 12.2,3), . 3, Spellifig information conccnUng geometry facto... (CM' penetration depth fGtora (C~. end grain facto" (C~. metal side plate (acrorll (C.t>. diaphragnt facto.. (ClIl> and toe-nall facto.. (Cm) is providod in Pana vnr, IX. x. XI. XII and XlV of thiJ SpecificatiOll. 7.3-ADJUSTMENT OF DESIGN VALUES 7.3.1-Applicability of Adjustment Factors Nominal design values (Z. W) shall be multiplied by all applicable adjustment factors to determine al- lowable design values (Z" W). Table 7.3.1 specifies the adjustment factors which apply to nominal lateral design values (Z) and nominal withdrawal design val- ues. (W) for each fastener type. The actual load applied to a connection shall not exceed the allowable design value (Z', W) for the connection. 7.3.2-Load Duration Factor, CD Nominal design values shall be multiplied by the load duration factors. CD.5 1.6. specified in 2.3.2 and Appendix B. except when the capacity of the connec- tion is controlled by metal strength (see 7.2.3 and Appendix B.3). The impact load duration factor shall not apply to connections, 7.3.3-Wet Service Factor, CM Nominal design values are for connections in wood seasoned to a moisture content of 19% or less and used under continuously dry conditions. as in most covered structures, For connections in wood that is unseasoned or partially seasoned, or when connections are exposed to wet service conditions in use. nominal design values shall be multiplied by the wet service factors. eM, specified in Table 7.3.3. 28 Mechanical Connectiona 7.3.4-Temperature Factor, Ct Nominal design values shall be multiplied by the ~ following temperature &ctors. ~ for connections that ,~~ will experience sustained exposure to elevated tern- hi peratures up to ISOOf' (see Appendix C): TABLE 7.3.4-TEMPERATURE FACTORS, el, FOR CONNECTIONS 10 Service C. MoIsCure Condltlonsl T~100"F 100oF<T~1:1SoF 125-F<T::150oF Dry Wet 1.0 1.0 0.8 0.7 0.7 0.5 1. Wet BIId dry lervlce ,onditiona for COMeotiOlll arc .specified in 7.3.3. 7.3.5-Fire Retardant Treatment Allowable design values for connections in Iwnber and structural glued laminated timber pressure-treated with fire retardant chemicals sball be obtained from the company providing the treatment and redrying service (see 2,3.5), The impact load duration factor shall not apply to connections in wood pressure-treated with fire retardant chemicals (see Table 2.3.2). 7.3.6-Group Action Factor. C . I 7.3.6.1 Nominal lateral design values for split ring {i. connectors. shear plate connectors. bolts with D ~ 1". \to or lag screws in a row shall be multiplied by the -- following group action factor. Cs: