The Public Works Contract requires projects to be tendered on a fixed price basis for a period of up to 31 months. It would be rare for a school building project to have a construction period in excess of 31 months; therefore, construction inflation does not generally impact on projects under construction. Tendering contractors must carry the risk for construction inflation during the construction period and this has the effect of curbing inflation as contractors are incentivised to purchase materials at the best price available.