HEAD Z A Y A s FRAME U S F O S progressive collapse analysis S I N T E F div of Structural Engineering ' XfosFull ' Interval Interval Interval ' Restart Result .out-file CSAVE 0 -3 -10 ' ' nloads npostp mxpstp mxpdis CUSFOS 10 50 1.00 2.5 ' lcomb lfact mxld nstep minstp ' 1 1.0 120.0 1500 0.20 ' ncnods CNODES 1 ' nodex idof dfact 5 1 1 deteroff