Step 1: Assessing Site Risks

As previously discussed, high risk sites require special attention. This needs to be done at the very start of the project. AS3660.1 calls for an investigation within the property for active termite nests up to 50 m from the proposed building. If found, action should be taken to eliminate the colony before construction of the building commences.

Though this goes some way to handling obvious risks, nests are hard to find – especially where located beneath the ground or on a neighbouring property. Time may also change circumstances. To deal with these issues other indicators based on the earlier discussion about termite behaviour are useful. Map 2 followed by Decision Chart 1 apply the main points by way of key questions that aim to provide a ready reckoner for identifying high risk sites.

Check Map 1 to determine in which category your building site is located. Use this information to determine the path to be taken in Decision Chart 2. For ‘high’ and ‘very high’ risk sites, extra precautions to minimum BCA and AS3660.1 requirements are recommended. Take this into account when undertaking Step 2 (assessing and acting upon design risks) and Step 3 (selecting an appropriate termite management system).

Map 2: Termite map of Australia (Source: Leicester et el., 2003)

Decision Chart 1: Assessing if the site has a high risk of attack