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CURVED BEAM DESIGN

Compresive strength of concrete f'c 28 MpaSteel yeild strength f'y 410 MpaWidth of beam b 400 mmDepth of beam d 600 mm

2700

Angle 30 degBeam span length L 1.41 mConcrete cover c 40 mm 400

Effective depth de 560 mm 400

Slab thickness t 150 mm

Wall thickness t 150 mm

600

Wall height H 1 mLine 'b' length 2700 mmRadius for curve r 1350 mmDistance from center to inner fiber s 2500 mmDistance from centroidal axis to inner fiber c 200 mmRadius of curvature of centroidal axis R 2700 mm

MEMBER LOADINGDEAD LOAD

Slab load 3.75

Superimposed dead load 2

Partition load 1

Finishes 2.5 Tributary length 4.00 mWall load 3 KN/mBeam self weight 6 KN/mPoint load (if any) 0 KNTotal dead load 46Point load (if any)

LIVE LOAD

Superimposed live load 3Point load (if any) 0 KNFactored load/unit length 84.8 KN/mFactored point load 0 KN

FLEXURE DESIGNK value Ratio 14Cross section CircleLoading 119.88 KNMoment 323.68 KN-m

Reinforcement 1734

Min reinforcement 723Bars provided 4 dia 25Stress at inner edge (compression) 14.43 MpaStress at outer edge (tension) 12.68 Mpa

KN/m2

KN/m2

KN/m2

KN/m2

KN/m2

Ast mm2

Ast(min) mm2

sb

r

CORRECTION FACTOR "K" FOR CURVED BEAMSC

ros

s s

ec

tio

n

Ratio Circle or Ellipse Rectangle Other sections

R/c Inside Outside Inside Outside Inside Outside1.2 3.41 0.54 2.89 0.571.4 2.40 0.60 2.13 0.631.6 1.96 0.65 1.79 0.671.8 1.75 0.68 1.63 0.70 - -2.0 1.62 0.71 1.52 0.73 1.63 0.743.0 1.33 0.79 1.30 0.81 1.36 0.814.0 1.23 0.84 1.20 0.85 1.25 0.866.0 1.14 0.89 1.12 0.90 1.16 0.908.0 1.10 0.91 1.09 0.92 1.12 0.93

10.0 1.08 0.93 1.07 0.94 1.10 0.9420.0 1.03 0.97 1.04 0.96 1.05 0.95

13.6 Err:522 Err:52213.50 Err:522 Err:522

13.4 Err:522