Understanding Soil Conditions: A Must for Builders & Designers

Why Soil Matters in Construction

Building on the right foundation starts with knowing your soil. Whether you’re a designer, contractor, or tradesperson, understanding soil conditions is essential to prevent costly mistakes and ensure long-term structural stability.

Key Considerations for Stable Ground

• Always Consult an Engineer
  AS 2870 isn’t always enough—unless you’re on rock, get expert advice before proceeding with footings, piers, or piles.
• Seek Out Natural Ground
  Where possible, build on stable, undisturbed soil to avoid future movement and instability.
• Avoid Inconsistent Soil Conditions
  Variations in soil type can cause differential settlement, leading to cracks and structural damage.
• Inspect & Clean Pier Bases
  Every pier must be thoroughly cleaned and checked before pouring concrete to ensure proper adhesion and stability.
• Account for Slope, Erosion & Water Flow
  Site conditions, including overland flow and erosion, must be managed to protect structural integrity.
• Keep Footings & Raft Bases Dry
  Proper drainage prevents water-related complications before pouring concrete.
• Expect & Manage Ground Movement
  If your foundation isn’t on rock, anticipate natural movement and design accordingly.

Simplify Building with Tools™

Instead of sifting through complex codes, use Tools™ to access interactive, easy-to-understand graphics that break down the NCC. Find the right requirements instantly and share crucial information with your team.

Visit Building Tools for more insights.