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e CORNERSTONE <br />"VALLDESIGNER <br />CONNECTION CALCULATIONS <br />Connection is the amount of resistance of the reinforcing has to a pullout failure from the facing units based <br />on the Tmax applied and the normal load on the units. In an AASHTO LRFD design, creep on the connection may be <br />applied for frictional and mechanical connections. In NCMA or AASHTO 2002, a frictional failure is based on the <br />peak connection capacity divided by a factor of safety. For a rupture connection the capacity is the peak load divided <br />by a creep reduction factor and a factor of safety. <br />Frictional Connection <br />Peak Connection = N(ppf) tan(slope) + intercept <br />Rupture Connection <br />Connection Capacity = [N(ppf) tan(slope) + intercept] / RFcr <br />RFcr can be a value obtained from long-term testing or by default could be the creep reduction factor of the <br />geogrid reinforcing. <br />Tal_cn = Allowable connection capacity = Tult_cn / FScn <br />Rc = % coverage <br />FS = Tal cn * FScn/Tmax <br />TABLE OF RESULTS <br />Elev[ ft] <br />Name[ ft] <br />Tmax[ ppf] <br />Ttotal[ ppf] <br />Rc % <br />N[ ppf] <br />Avail_CN[ ppf] <br />FS cn FS cns <br />6.00 <br />5XT <br />58 <br />M232 <br />0 <br />100 <br />120 <br />967 <br />16.55 <br />4.00 <br />5XT <br />0 <br />M <br />100 <br />360 <br />1010 <br />4.36 <br />MO <br />5XT _.� <br />� ._.... <br />�_.301 _ <br />_ <br />0 <br />100 <br />600 <br />1053 <br />3.50 <br />0.67 <br />5XT <br />�w 223 � <br />O <br />_ <br />100 <br />760 <br />1082 <br />4.84 _ <br />Note: Calculations and quantities are for PRELIMINARY ANALYTICAL USE ONLY and MUST NOT be used for final <br />n or construction without the independent review, verification, and approval by a qualified professional engineer. <br />Cornerstone Analysis and Design 5.0.19309 13 <br />