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A simple supported beam of 6m carries idl of 10kN/m upto 2m and couple of 5kNm (clockwise) at 3m respectively from left side support.Draw SFD and BMD with appropriate calculation.
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 Data: L=6m,W1=18kN,W2=18kN,σb=10N/mm2,b=d  Find: b,d

RA=RB=18kN (Due to symmetry)  Mmax=MC=MD=18×2=36kNm=36×106Nmm I=bd312=b412 Y=d2=b2
MI=σY σ=MI×Y 10=(36×106)b412×b2 10=(36×106)10×6 b3=216×105 b=278.495mm\d=278.495mm

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