... 0.6=Strand_diameter strands_type 1,:=Strand _description "6/10-270k-LL"=Strand _description strands_type 0,:=s_type 1:=Strand Type to usestrandPICK Description DIAMETER AREA WEIGHT PER LENGTH ... DesignLRFD pre- stressed beam.mcd7/1/2003 13 of 71fft 0.537−=Tension (ksi) =fc3 3.2=fc3 0.4 fcf⋅:=Compression (ksi) =Case III 50%PS + 50%DL + LLfft 0.537−=Tension (ksi) =fc2 3.6=fc2 0.45 fcf⋅:=Compression ... interior or exterior)LRFD pre- stressed beam.mcd7/1/2003 9 of 71Section Diagram40 20 0 20 40 60 80010203040506070Sectionbeamxa 1,xhxhn 1,xexhn 1,beamxa 0,xhxhn 0,, xexhn 0,,LRFD pre- stressed beam.mcd7/1/2003...