The year 1976 was an important pioneering step in the profession and birth of a new industry, particularly in private businesses of Civil Engineering consultancy in Indonesia. At that time, Prof. Dr. Ir. Wiratman Wangsadinata and Ir. Daud Tegasan establish an engineering consutant company name PT Wiratman & Associates. Later on, the company's name changed into PT Wiratman until now. 

Within 40 years, Prof. Dr. Ir. Wiratman Wangsadinata and Ir. Daud Tegasan have develop a global strategy and has shaped the firm into one of Indonesia's leaders in all aspects of architecture and engineering services.