Mel Meng Complete Medium Blog Post List for Modeling

April 10, 2025 / Mel Meng, XPSWMM

Mel Meng Complete Medium Blog Post List for Modeling

Manhole in InfoWorks ICM

source: github

](https://mel-meng-pe.medium.com/manhole-in-infoworks-icm-190c00070a0f?source=user_profile_page---------0-------------1602561a2c72----------------------)

Dec 4, 2024

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How to set up outfall boundary using rating curve

source: github

](https://mel-meng-pe.medium.com/how-to-set-up-outfall-boundary-using-rating-curve-2b87266affaa?source=user_profile_page---------1-------------1602561a2c72----------------------)

Nov 20, 2024

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How to set outfall boundary in InfoWorks ICM

source: github

… Read the rest

ICM, ICM_SWMM, InfoSewer, InfoSWMM, Mel Meng, SWMM3, SWMM4, SWMM5

Want to solve differential equations? Think about how you ride your bike

April 9, 2025 / ICM, ICM_SWMM, InfoSewer, InfoSWMM, Mel Meng, SWMM3, SWMM4, SWMM5

If you’re serious about modeling, you’ll need to understand how the engine solves differential equations sooner or later. So the next time the engine does something strange, you’ll know what to look for.

Most people, I believe, are like me in that they cannot derive their intuition from equations; it … Read the rest

ICM, ICM_SWMM, Mel Meng, SWMM5, Visual SWMM, XPSWMM

Reporting Time Step vs Simulation Time Step

April 9, 2025 / ICM, ICM_SWMM, Mel Meng, SWMM5, Visual SWMM, XPSWMM

If you are new to modeling, very quickly you’ll find the peak flow can be different in your graph and your model results summary. How can that be, which one is correct?

The difference lies in how the peak flow is calculated. The engine keeps track of peak flow for … Read the rest

ICM, ICM_SWMM, Mel Meng

InfoWorks ICM GeoPlan Tips

April 9, 2025 / ICM, ICM_SWMM, Mel Meng

InfoWorks ICM has its own way of managing the different layers and the styles for the map of the model. It might take new users some time to get familiar with the conventions if coming from a CAD or GIS background.

GeoPlan is the main window showing the model and … Read the rest

ICM, ICM_SWMM, Mel Meng, Ruby

Getting Started with Ruby Scripting for InfoWorks

April 9, 2025 / ICM, ICM_SWMM, Mel Meng, Ruby

Introduction

InfoWorks is a powerful platform with thousands of functions. Ruby scripting is a great way to automate repeated or tedious modeling tasks.

However, getting started with Ruby scripting can feel quite intimidating.

If your job involves moving a lot of data in and out of ICM on a regular … Read the rest

ICM, Mel Meng

How to model a screen in InfoWorks ICM

April 9, 2025 / ICM, Mel Meng

Introduction

Screen is modeled using the Kirschmer’s equation in ICM. Refer to this Reference PDF on pg 5 for more information.

As shown above, it is an empirical equation based on the configuration of the screen. Field measured data probably will be needed for more accurate results(refer to this study… Read the rest

ICM, Mel Meng

InfoWorks ICM Ground Infiltration Cheatsheet

April 9, 2025 / ICM, Mel Meng

InfoWorks ICM Ground Infiltration simulates the complicated long term hydrological cycle of sewer infiltration over seasons. Most modelers with a Civil background are not familiar with these concepts, and here are a few diagrams to give you a fast start.

Ground Infiltration Process Overview

Input Parameters

Ground Infiltration Parameter Mapping… Read the rest

ICM, Mel Meng

ICM Simulation Results: Maxima vs TVD

April 8, 2025 / ICM, Mel Meng

Introduction

When reviewing the simulation results, there are two sections TVD and Maxima.

Maxima is generated during the simulation, the simulation engine will keep track of the maxima for all the result parameters at every computation time step.
TVD is the saved time series which reports the values at the

… Read the rest

ICM, Mel Meng

GIM or Ground Model for InfoWorks ICM

April 8, 2025 / ICM, Mel Meng

Introduction

When developing a model in InfoWorks ICM for a proposed condition, you often need to update ground model to include the proposed pond, roads, and housing units.

For smaller-scale projects, the process involves exporting the ground model as a grid, importing it into Civil3D, implementing the necessary changes, and … Read the rest

ICM, Mel Meng

InfoWorks ICM model initialization

April 2, 2025 / ICM, Mel Meng

Introduction

Model initialization is a crucial, automated step in model preparation. While it typically operates behind the scenes without user intervention, it can sometimes fail or cause undesirable starting conditions in complex models. Understanding the process and the common workaround techniques can help resolve these issues.

Why initialize a model?

… Read the rest

ICM, Mel Meng, SQL

How to use SQL expression to visualize results on the GeoPlan (map)

March 29, 2025 / ICM, Mel Meng, SQL

Introduction

To calculate and visualize parameters that are not reported as an attribute or results field in InfoWorks ICM, you can use SQL expression to create a custom field.

For example, freeboard is measured as the distance from the ground of the manhole to the water level inside. Defined as … Read the rest

Mel Meng

Mel Meng Complete Medium Blog Post List for Modeling

Manhole in InfoWorks ICM

source: github

How to set up outfall boundary using rating curve

source: github

How to set outfall boundary in InfoWorks ICM

source: github

Introduction

Introduction

Input Parameters

Introduction

Introduction

Introduction

Why initialize a model?

Introduction

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