design of two way slab

Enter Data Condition1 Interior Panels2 One Short Edge Continuous3 One long Edge discontinuous4 Two adjacent edge discontinuous5 Two short edge discontinuous6 Two long edges discontinuous7 Three edges discontinuous (One long edge Continuous)8 Three edges discontinuous (One short edge Continuous)9 Four edges discontinuous

Condiition ly/lx (αx) short span co.efficient

1 1.1 1.2 1.3 1.4 1.5

1 -ve 0.032 0.037 0.043 0.047 0.051 0.053+ve 0.024 0.028 0.032 0.036 0.039 0.041

2 -ve 0.037 0.043 0.048 0.051 0.055 0.057+ve 0.028 0.032 0.036 0.039 0.041 0.044

3 -ve 0.037 0.044 0.052 0.057 0.063 0.067+ve 0.028 0.033 0.039 0.044 0.047 0.051

4 -ve 0.047 0.053 0.06 0.065 0.071 0.075+ve 0.035 0.04 0.045 0.049 0.053 0.056

5 -ve 0.045 0.049 0.052 0.056 0.059 0.06+ve 0.035 0.037 0.04 0.043 0.044 0.045

6 -ve - - - - - -+ve 0.035 0.043 0.051 0.057 0.063 0.068

7 -ve 0.057 0.064 0.071 0.076 0.08 0.084+ve 0.043 0.048 0.053 0.057 0.06 0.064

8 -ve - - - - - -+ve 0.043 0.051 0.059 0.065 0.071 0.076

9 -ve - - - - - - +ve 0.056 0.064 0.072 0.079 0.085 0.089

Two way slab design calculation

Enter Data :- Enter Data Enter Data

Ly = 3 4 4 4 1 Interior PanelsLx = 3 5 7 9 2 One Short Edge ContinuousLy/Lx = 1.00 0.80 0.57 0.44 3 One long Edge discontinuous

4 Two adjacent edge discontinuousGo for Two-Way Slab 5 Two short edge discontinuous

6 Two long edges discontinuousfck = 20 MPa 7 Three edges discontinuous (One long edge Continuous)fy = 415 MPa 8 Three edges discontinuous (One short edge Continuous)

9 Four edges discontinuous

Condition 6 Two long edges discontinuous

Co-efficient calculation

Short span(αx) -ve #N/A(αx) +ve

Long span(αx) -ve(αx) +ve

Enter Condition :-

ly/lx (αx) short span co.efficient ly/lx (αy)

1.75 2

0.06 0.065 0.0320.045 0.049 0.024

0.064 0.068 0.0370.048 0.052 0.026

0.077 0.085 0.0370.059 0.065 0.028

0.084 0.091 0.0470.063 0.069 0.035

0.065 0.069 -0.049 0.052 0.015

- - 0.0450.08 0.088 0.035

0.091 0.097 -0.069 0.073 0.043

- - 0.0570.087 0.096 0.043

- - -0.1 0.107 0.056

One Short Edge ContinuousOne long Edge discontinuousTwo adjacent edge discontinuousTwo short edge discontinuousTwo long edges discontinuousThree edges discontinuous (One long edge Continuous)Three edges discontinuous (One short edge Continuous)Four edges discontinuous

design of two way slab

Enter Data :-Enter Data Condition

Ly = 4 m 1 Interior PanelsLx = 3 m 2 One Short Edge ContinuousLy/Lx = 1.33 3 One long Edge discontinuous

4 Two adjacent edge discontinuousGo for Two-Way Slab 5 Two short edge discontinuous

6 Two long edges discontinuousfck = 20 MPa 7 Three edges discontinuous (One long edge Continuous)fy = 415 MPa 8 Three edges discontinuous (One short edge Continuous)

9 Four edges discontinuous

Condition 3 One long Edge discontinuous

Case :- 1 -ve

Ly/Lx Ly/Lx Ly/Lx

αxαy

Case :- 2 +ve

Ly/Lx Ly/Lx Ly/Lx

αxαy

Design of Two Way Slab :-

Enter Condition :-

Coefficients :-

Two adjacent edge discontinuous

Three edges discontinuous (One long edge Continuous)Three edges discontinuous (One short edge Continuous)