Welcome to Diagram Triproporsi

PT. Diagram Triproporsi Engineering Consultant was founded in 1980 with intensive projects portfolio in ports, harbors and urban drainage. We have expanded our experiences in internationally funded projects from World Bank and Asian Development Bank over the years by forming several consortium joint ventures with global design firms from Japan, Netherlands and USA, such Pacific Consultant International, Nippon Koei, NEDECO, and The Louis Berger Group Inc.

Today, we are recognized as a national leader in the ports and harbors development. We offer a full range of professional services from feasibility study, various surveys, designs, trainings to contract administration which includes but not limited to supervision and construction management. Being a member of both The National Association of Indonesia Consultants and Indonesian Chamber of Commerce and Industry since our inception allows us to provide professional services not only to private sector but also to various Government Departments and Agencies.

We believe there is always room for improvement and in order for us to serve our clients more efficiently, cost effectively and to the highest standard, we constantly enhance our design and engineering capability and expertise with trainings and utilization of latest design applications and tools. Our commitment to strive for the best and customer oriented satisfaction has earned us with repeat clients.

Proud of our employees and products, proven track records, coupled with innovation, creativity, integrity and ethical business practices as our core values, we serve and meet our clients’ project needs beyond expectation. We welcome you to our website and encourage you to explore of our services and our career opportunities. We pleased if any comments or observations you may have about our website. Thanks for taking the time reading our company profile.

About Us

PT. Diagram Triproporsi Engineering Consultant was founded in 1980 with intensive projects portfolio in ports, harbors and urban drainage. Read more...

Contact Info


+62 (021) 4701356
+62 (021) 4701357

E-mail : project@diagramtriproporsi.com


Agnesia Building 2nd floor, Jl. Pemuda 73B Jakarta Indonesia 13220