10 Loans JANI A: ANSWER PART A IN A SEPERATE BOOKLET Ration A1. (TOTAL 25 MARKS) (A) Figure A1(A) Represents The Extension Of An Existing Car Park Through The Addition Of Another Beam Of Different Capacity. The Beams Are Connected Through Welded Plates To Forma Continuous Team. Part Of The Beam AC Has A Plastic Moment Capacity Of M. Pat CF On The Other Hand

 

to logrise A: ANSWER PART A IN A SEPERATE BOOKLET ation A1. (a) Figure A1(a) represents the extension of an existing car park through the addition of another (TOTAL 25 MARKS) beam of different capacity. The beams are connected through welded plates to form a continuous beam. Part of the beam AC has a plastic moment capacity of 3M Part CF on the other hand has a plastic moment capacity of M, Determine the plastic collapse load of the beam. AP 2P 3m 4m 4m 3m 3m Figure A1(a) (b) Determine the effective section modulus of the cold-formed section shown in Figure A1(b) for bending about the major axis. The section properties are also given as part of Figure A1(b). As a structural engineer, what would your recommendation be on using plastic design to assess this beam in a steel structural system. fu 500MPa fy-450MPa d=250mm b=90mm t=6mm A-2450mm2 1.-21.9x10mm Z=176x10 mm S-210x10 mm rx-94.6mm Figure A1(b) ly=1.79x10mm ZYR-26.2x10 mm Zy=83.3x10 mm Sy=46.4x10mm ry-27.1mm