HYD version 2

Bridge Hydraulic Contraction & Soffit Decision Calculator

Component-Wise Flow Obstruction (% Q_Manning) & Empirical Discharge Verification

Design Input Parameters Summary:

1. Catchment Parameters (Empirical)

Catchment Area A (km²)

Rainfall Intensity I (mm/hr)

Dickens Coeff (C_d)

Ryves Coeff (C_r)

Rational Coeff (C)

2. River & Bridge Hydraulic Setup

HFL Level (m)

Bed Slope (1 in X)

Deck Soffit RL (m)

Deck Depth (m)

Bridge Start Ch. (m)

No. of Spans

Span Length (m)

Pier Width (m)

Abutment Top (m)

Abutment Batter (H:1V)

3. Ground Station Profile Cross-section Manning 'n'

Ch. (m)	Bed RL (m)	Rugosity (n)	Actions

Manning Discharge (Q_M)

0.00 m³/s

Total Obstructed Flow

0.00 m³/s

Total Flow Obstruction (%)

0.00 %

Net Unobstructed Flow

0.00 m³/s

Cross-Section & Deck Soffit Level Visualizer

Component-Wise Obstructed Flow & % Obstruction Breakdown

Discharge Formula Comparison & Freeboard Guidelines

Formula Method	Formulation / Governing Equation	Calculated Q (m³/s)	Diff vs Manning (%)	Status / Guidance