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Wrong Steel Diameter = Big Problem? οΏ½
03/06/2026
How do buildings handle loads from top to bottom?
The secret is in the vertical load path β from slab β beam β column β foundation.
Lower columns are bigger because they carry cumulative loads from all upper levels!
example calculation (2-story building):
Β· A (roof slab load) = 50 kN
Β· B (Level 2 beams + columns) = 30 kN
Β· C (Level 1 slab + beams) = 40 kN
Β· D (ground column + foundation) = 60 kN
Step by step:
1. Level 2 column carries β A = 50 kN
2. Transmits to Level 1 β A + B = 80 kN
3. Level 1 column adds C β 80 + 40 = 120 kN
4. Foundation gets total β 120 + 60 = 180 kN
Thatβs why lower elements have larger dimensions β they support βA+B+C+Dβ!
Tag a fellow engineer or builder who needs to see this!
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For pdf get joint channal :https://t.me/SmartcivilengineerSCE/4021
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