Tunnel Carbon Calculator

Calculate the CO2 emissions created by a tunnelling project.

Input tunnel geometry

We use the method featured in the Tunnel Journal April/May 2021 edition. Read more about this method here.

Internal diameter m

Thickness mm

Length m

Show calculation assumptions

Carbon reduction suggestions

Material Optimisations:

Estimated saving: - tonnes of CO2 (-%)

This saving is equivalent to - round the world flights. ✈

Optimisation summary

Original CO2 prediction	- tonnes CO2 eq
CO2 prediction with material optimisation	- tonnes CO2 eq

Further details

Requirements for material optimisations:

An inert single component annulus grout with lower cement content is specified, instead of a typical two component grout.
An early strength enhancing material is specified in the segmental lining concrete mix to reduce curing time.
There is a huge discrepency between the wider environmental impact of different types of grout.
Read a more detailed explanaition of the requirements for these material optimisations here

Design Optimisations:

Our data indicates that an estimated tunnel lining thickness of -mm has been used on - similar projects.

Optimisation summary

Original CO2 prediction	- tonnes CO2 eq
CO2 prediction with design optimisation	- tonnes CO2 eq

Further details

Analyse whether a reduced tunnel lining thickness of -mm would be suitable for this application.
Typically as much as two-thirds of carbon emmissions come from cement, so any material reduction can have a signifcant effect on sustainability.
Find more information on the CalcForge lining thickness prediction by running a full design prediction here.

Finalised carbon prediction

Once you are satisfied with your design optimisations generate your final prediction below.

Optimise materials

Optimise lining thickness to

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Tunnel Carbon Calculator

Calculate the CO2 emissions created by a tunnelling project.

Input tunnel geometry

Carbon emmissions prediction

Total carbon emissions: - tonnes (CO2 eq)

Carbon reduction suggestions

Material Optimisations:

Optimisation summary

Further details

Design Optimisations:

Optimisation summary

Further details

Finalised carbon prediction

Final Prediction

Carbon emissions predicted: - tonnes CO2 eq

What's this calculator used for?

Interested in learning more about automation?

Total carbon emissions:

- tonnes (CO2 eq)