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  BEAM GIRDER COMPUTATION APITONG ?? = ??. ???? ?? = ?. ????? ? = ?. ?????? ??? ?? = ?. ???? ?? =. ???? ? ???? ?= = = ??. ???? ??? ??? w = ??? Assume the Dimension of the Beam: Base = 100mm Depth = 250mm Spacing = 150mm COMPUTATION: Self-weight included ?? ? = ?. ?? × ?. ?? × ?. ?? × ?. ???? ?? ? = 0.1397925??/? ?? ???? = 2 ? = [(2.6???(0.15?)) + 0.1397925
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  BEAM GIRDER COMPUTATION APITONG     .       .     .       .    .         .   w     Assume the Dimension of the Beam: Base = 100mm Depth = 250mm Spacing = 150mm COMPUTATION: Self-weight included   .×.   ×.×.     0.1397925/       2     [2.60.15+ 0.1397925/]     0.5297925/       0.5297925/32       .         8        0.5297925/3  8       0.5960166.   FOR FLEXURAL           2    ∑ ×(2) =  ×4       20       0.7946887520       15893.775     3215893.7752∑794.68875×(320.15) = 2794.68875×34     .       611920.331251000100250        11.44MPa 16.5MPa > 11.44MPa (adequate)        794.68875 30.15     .              315893.7752100250       0.9536MPa 1.73MPa > 0.9536MPa (adequate)  FOR DEFLECTION     48 +2×∑ ×× ×[3   4×  ]48  +5  384     794.688753000  48 +2×∑794.68875150[33000   4150×  ]48 +5139.79253000  384      5425.850965   I=     I= ..    I=      E’ = 1 –  C V  (E) E’ =1 –  0.11(7.31 X 10 3 ) E’ = 6.5 X 10 3 MPa     .. − .       6.41mm 16.67mm > 6.41mm (adequate) CONSIDERING SIZE ADJUSTMENT C s = √        C s = √  .   = 12 C k  = 0.811 √        C k  = 0.811 √  .  .  = 16.0967 10 < C s < C k (INTERMEDIATE BEAM)  ′     (    )      ′   .( 1216.0967)      ′    14.80MPa 14.80MPa > 11.44MPa (adequate) DIMENSION OF THE BEAM: Base = 100mm Depth =250mm The dimension computed will be the dimension of the entire beam in the design for uniformity. The beam used is in the center were two (2) twenty-one (21) floor joists are being supported.
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