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Thread: how to calculate the steel weight?

  1. #1
    Associate Engineer
    Join Date
    Dec 2018

    how to calculate the steel weight?

    Anybody know the formula to calculate the steel weight?

  2. #2
    Administrator Kelly Bramble's Avatar
    Join Date
    Feb 2011
    Bold Springs, GA
    Volume x lbs/volume
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

  3. #3
    Associate Engineer
    Join Date
    Dec 2018
    +1 kelly

  4. #4
    Principle Engineer
    Join Date
    May 2015
    .283 lbs/cubic inch

  5. #5
    Associate Engineer
    Join Date
    May 2019
    Hello there
    If you steel shape is simple their answers are right but are your shape is not as a geometric shape I suggest you model it in SolidWorks software and go to the evaluate and find its weight with a high accuracy

  6. #6
    First calculate the volume of the steel sheet. Note: If you are calculating the weight of circular steel reinforcement bar than calculate its volume by using this formula (πD^2/4) and then just multiply by the density of steel which is 7850 kg/m^3 and you will get the final weight of the steel.

  7. #7
    Senior Engineer
    Join Date
    Apr 2021
    Calculate Weight of Steel Bars

    1. Estimation of Steel Reinforcement for slab,beam and column.
    2. Weight of steel Flat bar = (Length x width x thickness) x 7850.
    3. Example 1: Determine the unit weight of MS Flat bar of width 40mm and Thickness of 20mm.
    4. Weight of steel bar = Volume of steel Bar x Density of steel.

  8. #8
    Join Date
    Dec 2021
    • Weight of bar in kg/meter should be calculated as (d2 162) where‘d’ is the diameter of bar in mm.
    • ‘L’ for column main steel in footing should be considered as minimum 30cm/as specified.
    • For bent up bar add 0.42d in straight length of bar where‘d’ is the clear depth of beam/slab.
    • For cantilever, beam anchorage length for main steel should be 69D or length of cantilever whichever is greater.

    Weight per meter of different dia of steel bar.

    • 6 = 0.222 kg per meter
    • 8 = 0.395 kg per meter
    • 10 = 0.617 kg per meter
    • 12 = 0.888 kg per meter
    • 16 = 1.58 kg per meter
    • 20 = 2.469 kg per meter

    With help of this formula you can find any type of dia bar weight
    (d2 162)
    D = diameter of bar in mm.

  9. #9
    Associate Engineer
    Join Date
    Jan 2022
    Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m 9.8 m/s2, where F is the object's weight in Newtons (N) and m is the object's mass in kilograms.

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