How-to guide

Earthworks sections and 3D

Numbers are easier to trust when you can see them. A cross-section shows the ground and the design along a line, with the cut and fill shaded; the 3D view shows the whole site at once. This guide draws a 255 m section across the Hollins Farm sample in Metre2 Earthworks, exaggerates it, reads levels along it and then looks at the site in 3D.

5 stepsFreeVideo 25 seconds

What you need

Step by step

1

Draw a section line

Press S (or Home > Section) and click the two ends across the plan. Or select an element and use Section through.

Draw a section line - Metre2 Earthworks
2

Read the section

The Sections view draws the existing ground, the finished level, the formation (dashed) and the base of the topsoil, with the cut shaded brown and the fill blue, and the cut and fill areas in m² at the top.

Read the section - Metre2 Earthworks
3

Change the exaggeration

Sites are long and shallow, so sections are drawn with vertical exaggeration: x1, x2, x5 or x10.

Change the exaggeration - Metre2 Earthworks
4

Read levels along it

Move along the section: the read-out gives the chainage, the ground level, the finished level and the cut or fill depth, and which element it is.

Read levels along it - Metre2 Earthworks
5

Check it in 3D

The 3D view shows the ground with the design on it, coloured by cut and fill depth; switch to colour by height, or exaggerate the levels.

Check it in 3D - Metre2 Earthworks

Tips

Frequently asked questions

What is an earthworks cross-section?

A cut through the site along a line, showing the existing ground and the design levels, with the cut and fill between them. Cross-sections are how cut and fill used to be worked out (average end areas); Earthworks uses them to check, not to calculate.

Why exaggerate the vertical scale?

Level changes of a metre or two over a 200 m site are invisible at true scale. Exaggeration makes them readable; the numbers are unchanged.

Is it free?

Yes. Sections and 3D are in the free version.

Is my survey uploaded?

No. Earthworks runs in your browser: survey files, LIDAR tiles and PDF drawings are read on your computer and the project is kept in your browser until you save it as a file.

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