Page 68 - Civil Engineering Formulas
P. 68

CASE 11.  Beam Overhanging Both Supported Unsymmetrically Placed—Continuous Load, Uniformly Distributed
















                                 Rx 1
                                 –
                                 x 1) 2  x 2 ) 2
                             x) 2  +               M   M1
                  a          –      –
                  –          (a  (a  (b      b
                 R  2w       w   w  w          R 1
                            1  2 1  2  1  2      x 2
               a             =   =  =        L
               –      wa 2  wb 2  M  M  M  W
              R  w  (max) = R  1  =  2  1      R  xx 1
               x 1 : when x 1  =  M  M1  M1 =  x: when x < a 2  x 1: when x 1 < L  x 2: when x 2 < b  a  M 1




               At    R:  At  R1:  At  At  (a + x 1)  At  At
                = load per unit of length  [(a + L) 2  + b 2 ]  2L  [(b + L) 2  + a 2 ]  2L









                W   R = w  R 1 = w  (max) = wa or R – wa x: when x < a   V = w (a – x) x 1 : when x 1  < L   V = R – w x 2 : when x 2  < b   V = w(b – x 2 )
                =
                 L + b
               W            V
                 +            At  At  At
                 a



                                    30
   63   64   65   66   67   68   69   70   71   72   73