Update app.py

app.py

@@ -0,0 +1,61 @@
+# app.py
+import streamlit as st
+import math
+
+# Page Configuration
+st.set_page_config(
+    page_title="🔧 Pipe Sizing Helper",
+    page_icon="💧",
+    layout="centered"
+)
+
+# Custom CSS for Styling
+st.markdown("""
+    <style>
+        .title {
+            text-align: center;
+            font-size: 2.5em;
+            font-weight: bold;
+            color: #4CAF50;
+        }
+        .subtitle {
+            text-align: center;
+            font-size: 1.2em;
+            color: #555;
+        }
+        .result {
+            text-align: center;
+            font-size: 1.3em;
+            font-weight: bold;
+            color: #2196F3;
+        }
+        .footer {
+            text-align: center;
+            margin-top: 50px;
+            font-size: 0.9em;
+            color: #777;
+        }
+    </style>
+""", unsafe_allow_html=True)
+
+# Header
+st.markdown("<h1 class='title'>🔧 Pipe Sizing Helper</h1>", unsafe_allow_html=True)
+st.markdown("<p class='subtitle'>Calculate optimal pipe size based on flow rate and velocity</p>", unsafe_allow_html=True)
+
+# User Inputs
+st.subheader("💡 Input Parameters")
+
+flow_rate = st.number_input("🌊 Enter Flow Rate (m³/s):", min_value=0.0, format="%.4f")
+velocity = st.number_input("💨 Enter Permissible Velocity (m/s):", min_value=0.1, format="%.2f")
+
+# Calculate Pipe Diameter
+if st.button("🔄 Calculate Pipe Diameter"):
+    if velocity > 0 and flow_rate > 0:
+        # Formula: Diameter = sqrt((4 * Flow Rate) / (π * Velocity))
+        diameter = math.sqrt((4 * flow_rate) / (math.pi * velocity))
+        st.markdown(f"<p class='result'>✅ Recommended Pipe Diameter: {diameter:.2f} meters</p>", unsafe_allow_html=True)
+    else:
+        st.warning("⚠️ Please enter valid positive values for flow rate and velocity.")
+
+# Footer
+st.markdown("<p class='footer'>💻 <b>Developed by ChatGPT</b></p>", unsafe_allow_html=True)