lecture _3
DESCRIPTION
Lecture _3TRANSCRIPT
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65562602
(Reinforced Concrete Design)
Phakin Loyjaroen Reinforced Concrete Design
1 2552 .
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3(Reinforced concrete beam design)
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(Load Transferred to Beam from Slab)
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(Load Transferred to Beam from Slab)
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(Load Transferred to Beam from Slab)
Tributary area = (m =S/L < 0.5) B1 = (Secondary Beam) B3 = (Primary Beam) Span B3
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(Load Transferred to Beam from Slab)
Tributary area = 0.5SL sq.m Load on beam = 0.5wSL kg/m Floor load = w kg/sq.m
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(Load Transferred to Beam from Slab)
Two-way Slab Span ratio m = S/L
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(Load Transferred to Beam from Slab)
(Two-way Slab) Span ratio m = S/L
(Short span (BC)): (Floor load) = w kg/sq.m (Tributary area) = S2/4 sq.m (Load on beam) = wS/4 wS/3 kg/m
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(Load Transferred to Beam from Slab)
(Two-way Slab) Span ratio m = S/L
(Long span (AB)): (Floor load) = w kg/sq.m (Tributary area) =
(Load on beam) =
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(Load Transferred to Beam from Slab)
50 10.30 . 2 ..2547 11 1 2-4 10 8
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
ACI
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(Continuous Beams and One-way Slabs)
ACI
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
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(Continuous Beams and One-way Slabs)
2 (spandrel beams) ( ) 1.5 T/m. 3 T/m. 2 ABC
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(Continuous Beams and One-way Slabs)
1) 2) LL/DL = 3/1.5 = 2 < 33) (L2-L1)/L1 = (6.5-6)/6 = 0.083 < 0.2
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(Continuous Beams and One-way Slabs)
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(Location of Reinforcement)
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(Location of Reinforcement)
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(Location of Reinforcement)
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(Location of Reinforcement)
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(Location of Reinforcement)
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(Location of Reinforcement)
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(Location of Reinforcement)
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(Behavior of Beam under Load Working Stress Conditions)
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(Behavior of Beam under Load Working Stress Conditions)