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Please provide short answers to the following questions: a) In calculating the flexural capacity of rolled l-shapes, it is es
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Cb IS FOR LATERAL TORSIONAL LIMIT FOR NONUNIFORM MOMENT MODIFICATION FACTOR Cb IS PROVIDED

AISC EQUATIONS F2.2 AND F2.3 GIVES THIS FACTOR NON UNIFORM GRADIENT TO UNSUPPORTED LENGTH OF BEAM.

Mmax=ABSOLUTE MAXIMUM MOMENT OF UNBRACED PART

M1=ABSOLUTE MAXIMUM OF QUARTER SEGMENT OF UNBRACED PART

M2=ABSOLUTE MAXIMUM AT CENTRE OF UNBRACED PART

M3=ABSOLUTE MAX OF THIRD QUARTER POINT OF UNBRACED LENGTH

Cb=12.5Mmax/(2.5Mmax+3M1+4M2+3M3)

USE OF THIS COEFFICIENT WILL TAKE INTO ACCOUNT END CONDITION THAT IS END RESTRAIN AND LOAD CONDITION OF BEAM ON LATERAL BUCKLING

Cb VALUE FOR SIMPLY SUPPORTED BEAM IS 1.33

FOR FIXED END BEAM VALUE IS 2.33EQ F2.1 Mp EQ F2.2 0.7FySx MOMENT Mn Clb>1 Cb-1.00 EQF23 Lr Lp UNSUPPORTED LENGTH OF BEAM BEAM STRENGTH Vs UNSUPPORTED LENGTH

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