Design Principles of Concrete Structures Lecture 9 Bar Bending Schedule Bar Bending Schedule Serial # Bar Designation Number of Bars Length of one Bar Dia of bar Weight of Steel Required Shape of Bar #10 #13 #15 #19 #25 1 M-1 #25 2 S-1 #10 3 H-1 #15 Σ Total weight of steel = 1.05Σ […]
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Lecture 8 Load Transfer from Slabs to Beams One-way slab Two-way slab Two types of load distribution to beams Isolated One Way Slab Continuous One Way Slab Continuous One Way Slab Continuous One Way Slab Isolated Two Way Slab Continuous Two Way Slab One-way slab Two-way slab Two types of load distribution to beams Load Carried
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Design Principles of Concrete Structures Lecture 7 Capacity Analysis & Rebar Guidelines Capacity Analysis of Singly Reinforced Rectangular Beam by Strength Design method Data Dimensions, b, h, d and L (span) fc’, fy, Ec, Es As Required ΦbMn Load Carrying Capacity Capacity Analysis of Singly Reinforced Rectangular Beam by Strength Design method (contd…) Solution Step #
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Design Principles of Concrete Structures Lecture 6 Under Reinforced & Over Reinforced (Derivation) Under-Reinforced Failure Stage-I, Un-cracked Section N.A. position is fixed, means “la” remains constant. Only “T” and “Cc” increase with the increase of load Stage-II, Cracked Section When section cracks, N.A. moves towards compression face means “la” increases. “T” and “Cc” also increase.
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Design Principles of Concrete Structures Lecture 5 Study of Flexural Behavior (Derivation) Balanced Steel Ratio, ρb 𝐴𝑆 𝜌 =𝑏𝑑 It is corresponding to that amount of steel which will cause yielding of steel at the same time when concrete crushes. At ultimate stage: Strain Diagram ab = depth of equivalent rectangular stress block when balanced
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