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Weight (force) = Linear Load (force / length) * Element's Length (length)
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Typical floor plan view and dimensions of a 3-storey building:
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Data
Columns dimensions = 45/40 cm
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K5 = 320 cm
Column height = 300 cm
Calculation of floor weight for a floor
Beam self weights
K1-> 1.425*2.5*0.25*0.50 = 0.445
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K5-> 3.20*2.5*0.25*0.50 = 1.0 tf
Total = 4.483 tf
Column self weights
Sum for 4 columns (S1, S2, S3, S4) → 0.40 * 0.45 * 3 * 2.5 * 4 = 5.4 tf
Group Curtain self weight
6*2,5*3*0.25 =11.25 tf
Slab self weight
→ D1 = 15.193 * 2.5 * 0.15 5.69
Total Self-Weight = 4.483 + 5.4 + 11.25 + 5.69 = 26.823 tf
Wall loads
K1 → 1.425*0.625 = 0.89 tf
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→ D1 = 15.193 * 0.15 2.279
Ground Floor Total Fixed Load Weight G
G = 2.279 +8.9675+26.823
G= 38.07 tf
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G and Q values calculated by the program for each floor can be seen in floor parameters .
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Total structure weight
W = G+ n*Q
W Zeminkat = 38.07 + 0.3 * 3.38 = 38.99 tf
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The total weight of the structure can be seen in the dynamic analysis report.
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Calculation of the mass due to the diaphragm in the walls
It is half the sum of the joints of finite elements belonging to the joints connected to the rigid diaphragm in shell elements. It is the grayscale portion of finite elements marked with an X in the figure.
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The rigid diaphragm has mass = 0.51 + 2.259 = 2.769 tf.
Calculation of free mass in walls
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Half of the sum of the masses of finite elements belonging to the joints attached to the foundation in shell elements is not included in the free mass.
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Total free mass of the structure = 3.5775 + 2.259 = 5.83 tf
Calculation of the mass attached to the diaphragm in columns
In the columns, it is half the weight of the columns attached to the rigid diaphragm. (It is the part toned with dark gray in the figure.)
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The rigid diaphragm has mass = 0.79 + 0.9 = 1.69 tf.
Calculation of free mass in columns
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Column self-weight = 0.25 * 0.85 * 2.5 * 3 = 1.593 tf
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Total free mass of the structure = 0.9 + 0.796 = 1.70 tf
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