Earthworks planning and cut & fill management

Earthworks planning in rail and road projects often uses outdated terrain models and manual updates shared via email or folders. As site conditions change quickly, this can cause discrepancies between design plans and actual conditions, leading to inaccurate quantity calculations and project delays.

Dalux InfraField enables continuous updates of survey models, allowing teams to compare current terrain with planned surfaces in a shared platform. This keeps earthworks planning accurate and transparent.

The challenge

In traditional projects, earthworks quantities are derived from multiple separate data sources:

• Design models and alignment files
• Periodic survey terrain models
• PDF sections and profiles
• Excel-based volume summaries

This information is often shared via email, shared folders, and printed drawings, with updates done manually. As a result, teams may use outdated terrain data, have limited insight into changes, rely on inconsistent quantity estimates, and discover volume discrepancies late in the process. This can lead to uncertainty in earthworks planning and resource allocation as excavation progresses.

How Dalux InfraField solves it

Dalux InfraField offers a centralized system for storing and managing terrain models and reference surfaces.

Updated survey data serves as the main source for recalculating quantities throughout the project.

This ensures more accurate cut-and-fill calculations, quicker detection of deviations, and better planning for machinery, transport, and material use.

Planning teams start by importing essential datasets for quantity calculations:

• Existing terrain model
• Design and formation surfaces
• Alignments

All datasets are kept in one coordinated environment, reducing the need for separate file systems and ensuring calculations use consistent, approved data.

The result

With Dalux InfraField, you get:

• Centralized terrain models and planning data help infrastructure projects shift from occasional, document-based planning to continuous digital management.
• Accuracy is improved, and planning reliability is enhanced for excavation and earthworks activities.
• The risk of unexpected volume changes is reduced, creating a structured and scalable foundation for more predictable earthworks management in rail and road projects.

Calculating cut and fill for earthworks

Using the Quantities feature in Dalux InfraField, the field engineer calculates cut and fill by comparing the existing terrain with the formation surface.

This is done by creating surfaces in Dalux based on:

• the existing terrain (based on survey data)
• the formation level (the intended final earthworks level)

The formation level may be imported either as a terrain model if available, or generated by selecting BIM elements of your design model.

Dalux compares the two surfaces and shows a clear summary of cut and fill volumes for the chosen project area. This helps site engineers quickly see the overall excavation and embankment needs.

Alignment data can be combined with terrain data to create a profile calculation.

The profile visualizes cut and fill along stationing and can include cut or fill slopes, providing a clear overview of where excavation or embankment is required.

This supports phased planning, resource allocation, and production monitoring along the corridor.

You can find step-by-step instructions on how to use quantities in this article: How to use Quantities in InfraField

Ongoing comparison of terrain and design

In InfraField, you can regularly update and upload new versions of terrain models, making sure all areas show the most current site conditions. Quantities allow site engineers to continuously compare these updated terrain models with the design and formation levels.

This comparison allows teams to spot potential concerns early on, such as differences from planned levels or issues with formation levels. It's particularly useful in important areas like underpasses and bridge approaches, transition zones between cut and fill, and where drainage systems connect.

Having early visibility makes it easier to make timely adjustments, which helps prevent errors from affecting later stages of construction.

With each updated terrain model, a surface can be created with only a few clicks and immediately compared to formation levels and alignments, so you can consistently perform cut and fill calculations as the project moves forward.

Keeping terrain versions current gives you an accurate digital record of site development, which helps track excavation progress over time. Regular updates also provide better insight into machinery usage, material transport, and distribution, and make it easier to spot any differences from planned formation levels or expected volumes before they affect later stages of construction.

From static estimates to continuous quantity control

Dalux InfraField brings together terrain and design data in one platform, making it easier to get accurate, up-to-date cut-and-fill calculations grounded in ongoing site conditions.

This can help with better earthworks planning, managing resources, and spotting any problems early on.

The benefits of using InfraField for earthworks planning and cut & fill management are:

• Having all terrain and design data in one location ensures quantity calculations are both consistent and accurate
• Regular updates make it possible to quickly notice any changes and monitor excavation progress
• Accurate volume and profile information help with resource use and planning for each phase of construction