HydroScour Calculator

Project Info
Input Data
Hydrology
Scour Analysis
Report Setup
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Project Information

Client Details

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Consultant Details

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Project Details
Bridge Location Details
Site Details

Input Data

Data Import

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Manual Data Entry
Year Peak Discharge (m³/s) Water Level (m) Flow Velocity (m/s) Actions
Bridge Site Parameters

Hydrological Analysis

Gumbel's Method Parameters
Return Period Analysis
Return Period (Years) Reduced Variate (y) Frequency Factor (K) Design Discharge (m³/s)
2 - - -
5 - - -
10 - - -
25 - - -
50 - - -
100 - - -
200 - - -
500 - - -
1000 - - -
Flood Frequency Curve
Goodness of Fit Test

Scour Depth Analysis

Scour Calculation Methods

Formula

d = 0.47 * (Q/f)^(1/3)

Where:

  • d = Scour depth (m)
  • Q = Design discharge (m³/s)
  • f = Silt factor

Calculation

Design Discharge (Q): - m³/s

Silt Factor (f): -

Scour Depth (d): - m

Formula

d = 1.34 * (b^0.5)

Where:

  • d = Scour depth (m)
  • b = Pier width (m)

Calculation

Pier Width (b): - m

Scour Depth (d): - m

Formula

d = 2.0 * (b^0.65) * (D^0.35)

Where:

  • d = Scour depth (m)
  • b = Pier width (m)
  • D = Flow depth (m)

Calculation

Pier Width (b): - m

Flow Depth (D): - m

Scour Depth (d): - m

Formula

d = 2.0 * K1 * K2 * K3 * (b^0.65) * (D^0.35)

Where:

  • d = Scour depth (m)
  • K1 = Pier shape factor
  • K2 = Angle of attack factor
  • K3 = Bed condition factor
  • b = Pier width (m)
  • D = Flow depth (m)

Calculation

Pier Shape Factor (K1): -

Angle of Attack Factor (K2): -

Bed Condition Factor (K3): -

Pier Width (b): - m

Flow Depth (D): - m

Scour Depth (d): - m

Formula

d = 1.5 * b^0.75

Where:

  • d = Scour depth (m)
  • b = Pier width (m)

Calculation

Pier Width (b): - m

Scour Depth (d): - m

Formula

d = 1.25 * b^0.72 * D^0.28

Where:

  • d = Scour depth (m)
  • b = Pier width (m)
  • D = Flow depth (m)

Calculation

Pier Width (b): - m

Flow Depth (D): - m

Scour Depth (d): - m

Formula

d = 2.1 * (b/D)^0.25 * D

Where:

  • d = Scour depth (m)
  • b = Pier width (m)
  • D = Flow depth (m)

Calculation

Pier Width (b): - m

Flow Depth (D): - m

Scour Depth (d): - m

Formula

d = 0.32 * (b/D)^0.62 * (Fr)^0.2 * D

Where:

  • d = Scour depth (m)
  • b = Pier width (m)
  • D = Flow depth (m)
  • Fr = Froude number

Calculation

Pier Width (b): - m

Flow Depth (D): - m

Froude Number (Fr): -

Scour Depth (d): - m

Scour Depth Comparison
Design Recommendations

Recommended Scour Depth

Maximum Calculated Scour Depth: - m

With Safety Factor: - m

Recommended Foundation Depth: - m

Report Setup

Report Content
Report Formatting
Header and Footer
References
Reference Details Actions
IRC:5-2015 Standard Specifications and Code of Practice for Road Bridges, Section: I - General Features of Design
IRC:89-1997 Guidelines for Design and Construction of River Training and Control Works for Road Bridges
HEC-18 Evaluating Scour at Bridges, Federal Highway Administration

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Hydrology and Bridge Scour Depth Analysis Report

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