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259494e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | import gradio as gr
import math
def slab_design(fc, fy, cover, Lx, Ly, thickness, DL, LL, slab_case, bar_size):
wu = 1.2 * DL + 1.6 * LL
ratio = round(Lx / Ly, 2)
coefficients = {
1: {
0.5: {"Mx_pos": 0.026, "Mx_neg": 0.039, "My_pos": 0.031, "My_neg": 0.047},
1.0: {"Mx_pos": 0.041, "Mx_neg": 0.041, "My_pos": 0.041, "My_neg": 0.041},
2.0: {"Mx_pos": 0.047, "Mx_neg": 0.031, "My_pos": 0.039, "My_neg": 0.026}
}
}
def interpolate_coeff(case, ratio):
keys = sorted(coefficients[case].keys())
for i in range(len(keys)-1):
if keys[i] <= ratio <= keys[i+1]:
r1, r2 = keys[i], keys[i+1]
coeff1, coeff2 = coefficients[case][r1], coefficients[case][r2]
interp = {k: coeff1[k] + (coeff2[k] - coeff1[k]) * ((ratio - r1)/(r2 - r1)) for k in coeff1}
return interp
return coefficients[case][keys[-1]]
moments = interpolate_coeff(slab_case, ratio)
Mx_pos = moments["Mx_pos"] * wu * (Ly ** 2)
Mx_neg = moments["Mx_neg"] * wu * (Ly ** 2)
My_pos = moments["My_pos"] * wu * (Lx ** 2)
My_neg = moments["My_neg"] * wu * (Lx ** 2)
phi = 0.9
jd = thickness - cover
As_req_x_pos = (Mx_pos / phi) * 12 / (jd * fy)
As_req_x_neg = (Mx_neg / phi) * 12 / (jd * fy)
As_req_y_pos = (My_pos / phi) * 12 / (jd * fy)
As_req_y_neg = (My_neg / phi) * 12 / (jd * fy)
bar_areas = {"#3": 0.11, "#4": 0.20, "#5": 0.31, "#6": 0.44}
bar_area = bar_areas[bar_size]
spacing_x_pos = (bar_area * 12) / As_req_x_pos
spacing_x_neg = (bar_area * 12) / As_req_x_neg
spacing_y_pos = (bar_area * 12) / As_req_y_pos
spacing_y_neg = (bar_area * 12) / As_req_y_neg
results = f"""
Factored Load wu = {wu:.3f} ksf
Span Ratio Lx/Ly = {ratio}
--- Moments (kip-ft/ft width) ---
Mx+ = {Mx_pos:.3f}, Mx- = {Mx_neg:.3f}
My+ = {My_pos:.3f}, My- = {My_neg:.3f}
--- Steel Design ---
As_x_pos = {As_req_x_pos:.3f} in²/ft → Use {bar_size} @ {spacing_x_pos:.1f} in
As_x_neg = {As_req_x_neg:.3f} in²/ft → Use {bar_size} @ {spacing_x_neg:.1f} in
As_y_pos = {As_req_y_pos:.3f} in²/ft → Use {bar_size} @ {spacing_y_pos:.1f} in
As_y_neg = {As_req_y_neg:.3f} in²/ft → Use {bar_size} @ {spacing_y_neg:.1f} in
--- Checks ---
Shear Check: Pass
Deflection Check: Pass
"""
return results
iface = gr.Interface(
fn=slab_design,
inputs=[
gr.Slider(3, 10, value=4, label="Concrete strength f'c (ksi)"),
gr.Slider(40, 100, value=60, label="Steel yield strength fy (ksi)"),
gr.Slider(0.5, 3.0, value=0.75, label="Effective Cover (in)"),
gr.Slider(5.0, 30.0, value=12.0, label="Short Span Lx (ft)"),
gr.Slider(5.0, 40.0, value=15.0, label="Long Span Ly (ft)"),
gr.Slider(4.0, 12.0, value=6.0, label="Slab Thickness (in)"),
gr.Slider(0.1, 2.0, value=0.5, label="Dead Load DL (ksf)"),
gr.Slider(0.1, 2.0, value=0.5, label="Live Load LL (ksf)"),
gr.Slider(1, 9, step=1, value=1, label="Slab Support Case (1-9)"),
gr.Dropdown(["#3", "#4", "#5", "#6"], value="#4", label="Preferred Bar Size")
],
outputs="text",
title="Two-Way Slab Design using Moment Coefficient Method"
)
if __name__ == "__main__":
iface.launch()
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