Deanside Building
Inspections

Soil, slabs and movement in Deanside VIC

Deanside sits on the volcanic plains west of Melbourne, where the clay soils are often reactive: they swell when wet and shrink when dry. Your lot's site class under AS 2870 is on the soil report and engineering, and it sets how the slab is designed. Once the house is built, how water is managed around it decides how much it moves.

Check the soil report for your lot's site class before the slab is designed.

At slab stage, the extra bars in wide ribs and the cover under the steel are what we look at most closely.

Keep ground falling away from the house and downpipes connected to stormwater.

Garden beds and heavy watering hard against the slab edge invite movement.

Diagonal cracks from window and door corners are the classic sign of ground movement.

More about Deanside

Written by our local inspection team from work carried out in Deanside. Licensed building practitioners, Building & Plumbing Commission registration CDB-U 53425.

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FAQ

Soil, slabs and movement in Deanside VIC: common questions

What site class are Deanside lots?

It varies by lot. Your soil test gives the AS 2870 class, and the engineer designs the slab to it.

Why do new houses crack?

Usually seasonal soil movement, made worse by poor drainage, leaking pipes or gardens against the slab. Some minor cracking is within tolerance; wider cracks are not.

When is a crack a defect?

The Guide to Standards and Tolerances 2015 sets crack widths by location. We measure and report against it.

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