research has shown that many problems on site are caused by poor or missing production information. the evidence shows that improvements in the quality of production reduce the incidence of site quality problems and lead to significant savings in the cost of construction work. modern cad systems can contribute greatly to the quality and clarity of drawn production information and, if used in a collaborative way by the whole design team, will result in benefit for all the concerned: clients, designers and constructors. the avanti approach had showed that the use of cpic materials would improve the quality and reduce the costs of construction projects.