Design of Singly Reinforced RCC T-Beam Girder: M Value 10.0
Design of Singly Reinforced RCC T-Beam Girder: M Value 10.0
Design of Singly Reinforced RCC T-Beam Girder: M Value 10.0
DESIGN OF SECTION
Span of girder = 24000 mm.
Critical shear
Description Section at L/4 Section at L/3 Section at L/2
Distance from support =
section
1000 mm. 6000 mm. 8000 mm. 12000 mm.
Maximum moment value = 100 t-m. 120 t-m. 160 t-m. 210 t-m.
Shear force value = 96 t 78 t 43 t 5t
Beam Dimensions :
Effective width of flange, bf = 2100 mm. 2100 mm. 2100 mm. 2100 mm.
Depth of flange, Df = 200 mm. 200 mm. 200 mm. 200 mm.
Overall depth of girder, D = 1700 mm. 1700 mm. 1700 mm. 1700 mm.
Width of web, bw = 350 mm. 350 mm. 350 mm. 350 mm.
Reinforcing bar arrangements
Critical shear
Section at L/4 Section at L/3 Section at L/2
Layer description section
Nos. f d Nos. f d Nos. f d Nos. f d
First layer from bottom 4 32 1634 5 32 1634 5 32 1634 5 32 1634
2nd layer from bottom 2 32 1570 4 32 1570
3rd layer from bottom
4th layer from bottom
5th layer from bottom
pt = Ast/(b wd) = 0.56% 0.70% 1.00% 1.29%
Developed stresses :
Critical shear
Description Section at L/4 Section at L/3 Section at L/2
Depth of N.A. from top =
section
209.1 mm. 233.6 mm. 277.0 mm. 316.5 mm.
Critical depth of N.A. = 653.5 mm. 653.5 mm. 653.5 mm. 653.5 mm.
Stress at flange top = 2.9 MPa 3.2 MPa 3.8 MPa 4.7 MPa
Stress at flange botom = 0.1 MPa 0.5 MPa 1.1 MPa 1.7 MPa
Maximum stress in steel = 198.7 MPa 191.5 MPa 187.9 MPa 195.4 MPa
Design of shear reinforcements :
Critical shear
Description Section at L/4 Section at L/3 Section at L/2
Developed shear stress =
section
1.68 MPa 1.36 MPa 0.76 MPa 0.09 MPa
Allowable shear stress = 0.33 MPa 0.37 MPa 0.42 MPa 0.46 MPa
Diameter of stirrups = 12 mm. 12 mm. 10 mm. 10 mm.
Number of links per stirrup set = 2 2 2 2
Inclination angle of stirrups = 90 Degree 90 Degree 90 Degree 90 Degree
Stirrup specification = 4L 12dia 190mm C/C 4L 12dia 260mm C/C 4L 10dia 300mm C/C 4L 10dia 300mm C/C
E D. Comp B. Comp Tensile Max shear
Conc.
GPa MPa MPa MPa MPa Permissible shear stress
0.002 0.003 ### 0.008 ### 0.013 ### 0.0175
M-20 27.50 5.00 6.67 0.53 1.80 0.18 0.22 0.30 0.35 0.39 0.42 0.45 0.47
M-25 29.00 6.25 8.33 0.61 1.90 0.19 0.23 0.31 0.36 0.40 0.44 0.46 0.49
M-30 30.50 7.50 10.00 0.67 2.20 0.20 0.23 0.31 0.37 0.41 0.45 0.48 0.50
M-35 31.50 8.75 11.67 0.67 2.30 0.20 0.23 0.31 0.37 0.42 0.45 0.49 0.52
M-40 32.50 10.00 13.33 0.67 2.50 0.20 0.23 0.32 0.38 0.42 0.46 0.49 0.52
M-45 33.50 11.25 15.00 0.67 2.50 0.20 0.23 0.32 0.38 0.42 0.46 0.49 0.52
M-50 35.00 12.50 16.67 0.67 2.50 0.20 0.23 0.32 0.38 0.42 0.46 0.49 0.52
M-55 36.00 13.75 18.30 0.67 2.50 0.20 0.23 0.32 0.38 0.42 0.46 0.49 0.52
M-60 37.00 15.00 20.00 0.67 2.50 0.20 0.23 0.32 0.38 0.42 0.46 0.49 0.52