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Beam Load Support Formulas







        All Beam Load tables are for simple beams supported at the ends . These can be used in the majority of the cases . There are times
        when it is necessary to know what happens with other loading and support conditions . Some common arrangements are shown
        below . Simply multiply the values from the Beam Load tables by factors given below .


                                                                                              Load     Deflection
                                      Load and Support Condition
                                                                                             Factor     Factor
          Simple Beam
          Uniform Load                                                  Span                  1 .00      1 .00

          Simple Beam                                                                         0 .50      0 .80
          Concentrated Load at Center


          Simple Beam                                                                         1 .00      1 .10
          Two Equal Concentrated Loads at 1/4 Points

          Beam Fixed at Both Ends                                                             1 .50      0 .30
          Uniform Load

          Beam Fixed at Both Ends                                                             1 .00      0 .40
          Concentrated Load at Center
          Cantilever Beam
          Uniform Load                                                                        0 .25      2 .40
          Cantilever Beam                                                                     0 .12      3 .20
          Concentrated Load at End
          Continuous Beam                                                                     1 .30      0 .92
          Two Equal Spans - Uniform Load on One Span               Span        Span

          Continuous Beam                                                                     1 .00      0 .42
          Two Equal Spans - Uniform Load on Both Spans

          Continuous Beam
          Two Equal Spans - Concentrated Load at Center of One Span                           0 .62      0 .71

          Continuous Beam                                                                     0 .67      0 .48
          Two Equal Spans - Concentrated Load at Center of Both Spans






          EXAMPLE I             60"             60"            EXAMPLE II
          PROBLEM:                                             PROBLEM:                           24"
          Calculate the load and deflection of an W200 beam continuous    Determine load and deflection of an W150 cantilever beam
          over one support and loaded uniformly on one span .  with a concentrated load on the end .
          SOLUTION:                                            SOLUTION:
          A . From load table for W200 the load for a 60" span is 700 lbs .    A . From load table for W150 the load for a 24" span is
          and deflection is 0 .35" .                           5,360 lbs . and deflection is 0 .09" .
          B . Multiply by factors from Table above             B . Multiply by factors from Table above .
          Load = 700 lb . x 1 .30 = 910 lbs .                  Load = 5,360 lbs . x 0 .12 = 643 .2 lbs .
          Deflection = 0 .35 x 0 .92 = 0 .322" .               Deflection - 0 .09 x 3 .20 = 0 .288"





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