Yee Precast Design Group People
Dr. Alfred A. Yee

Dr. Alfred A. Yee, P.E.

President, Yee Precast Design Group Ltd.

Director, Precast Design Consultants Pte. Ltd.

Dr. Alfred A Yee is the President of Yee Precast Design Group Ltd. in Honolulu, Hawaii and Director of Precast Design Consultants Pte. Ltd. in Singapore.  He obtained his Bachelor of Science degree (Civil Engineering) from Rose-Hulman Institute of Technology and his Master of Engineering degree (Structural Engineering) from Yale University.  In recognition of his work in concrete technology and proven unique concepts for land and sea structures, particularly in the field of precast design and construction, the Rose-Hulman Institute of Technology conferred upon him an Honorary Doctor of Engineering degree in 1976.


Dr. Yee started his own engineering practice out of his Honolulu home in 1954.  In 1955, he was a key participant in introducing the first precast/prestressed concrete mass production facility to Hawaii, one of the earliest in the United States.  He personally designed the prestressing beds and concrete forms, and over the years developed new structural concepts and construction techniques utilizing prestressed, precast concrete units for the construction of low- and high-rise buildings, bridges, and other structures.  During Hawaii’s tourism boom of the 1960’s and 70’s, Dr. Yee’s firm engineered many of Honolulu’s landmark structures. His innovative approach to engineering, and materials/ costs/ time-saving method of construction attracted clients from around the world.  Dr. Yee and his staff have designed and administered the construction of thousands of structures in North America, South America, the Pacific islands, Asia, Australia, and the Middle East over more than 50 years.

His hands-on nature and practical approach to construction led him to the invention of unique systems for splicing and joining precast components which are widely utilized throughout the world on many high-rise and civil engineering structures.  In addition, he has innovated numerous concepts in mechanical equipment designs to transport and erect heavy long span precast prestressed concrete elements in the construction of high-rise buildings and special structures. 

In the field of marine concrete vessels, Dr. Yee designed and supervised the construction of the world’s first pretensioned, prestressed concrete oceangoing barges in 1964.  Dr. Yee also developed and patented a novel structural concept for marine structures.  This system utilizes reinforced concrete in the form of an integrated cylindrical cell honeycomb core in composite action with prestressed top and bottom slabs and side walls which can produce a structure with maximum strength and rigidity with the least amount of construction material.  The prestressed honeycomb system was utilized commercially for the first time in 1980 on the award winning ROFOMEX I, a floating platform designed to support a large floating phosphate processing plant.

Due to the inherent strength of the concrete honeycomb, this system was incorporated into the first mobile Concrete Island Drilling System (SUPER CIDS) used for offshore oil exploration on the North slope of Alaska in 1984.  This mobile platform facility has proven itself by continuous service for over two decades without any sign of concrete damage, wear or deterioration and has developed a reputation of being the most economical and environmentally friendly method of oil exploration in Arctic offshore environment.  It was recently refitted with new equipment for oil exploration and drilling in 2004 with minimal repair to the concrete platform.

Internationally, Dr. Yee’s firms are presently involved in the design and construction administration of mid and high-rise building projects including commercial, residential, industrial buildings and special purpose structures such as precast concrete long span aircraft hangars and numerous ocean-going concrete barges and platforms.

In the Engineering Community

Dr. Yee has served on technical committees of various national engineering societies such as the American Concrete Institute, Prestressed Concrete Institute, American Society of Civil Engineers, and the American Bureau of Shipping.  In recognition of his technical contributions towards the advancement of engineering, he was awarded honorary memberships in the American Concrete Institute and the American Society of Civil Engineers, the highest recognition accorded to any member of these societies.

For seven consecutive three-year terms, he has served as honorary structural consultant to the Singapore Housing Development Board (HDB) to assist in the initiation and direction of a major program for precast concrete high-rise construction methods.  This program involved the introduction of construction systems utilizing mass-produced prefabricated concrete components to accelerate housing construction in Singapore.  Dr. Yee assisted in the development of design and construction criteria and in the training of structural engineers and technicians for this program.  The training program also involved methods of design, construction, quality control, materials research, precast concrete plant production technology and field erection.  To date, the HDB has built hundreds of thousands of high-rise housing units utilizing precast concrete technology and this program presently provides housing for approximately 85% of the entire population of Singapore.

Awards and Recognition

In 1976, Dr. Yee was elected to the prestigious National Academy of Engineering (NAE), which membership honors those who have made important contributions to engineering theory and practice and who have demonstrated unusual accomplishment in the pioneering of new and developing fields of technology. The  NAE serves as technical advisor to the President and Congress of the U.S.A.

In 1995, the State of Hawaii Legislature presented Dr. Yee with an Official Proclamation honoring him for the invention of the NMB Splice Sleeve and recognizing the successful role this connection device played in reinforcing Precast Concrete Structures to withstand the devastating 1995 earthquake in Kobe, Japan.

In 1997, Dr. Yee was awarded the PCI Medal of Honor for his extraordinary contributions to the precast/prestressed concrete construction industry, especially for his innovative design of precast/prestressed concrete high rise buildings along the Pacific Rim which have survived some of the highest intensity earthquakes in the world.

In 2004, Dr. Yee was named a Titan of the Precast/Prestressed Concrete Industry in recognition of his outstanding contributions to the Industry; for prominence in industry innovation and change; for positive leadership in industry-altering development and expansion; and for advancing and accelerating the growth of the North American Precast and Prestressed concrete industry.

In 2007, Dr. Yee was appointed to the International Panel of Experts by the Building and Construction Authority (BCA) of Singapore to assist in the effort to review and strengthen its regulatory framework. 

In 2009, the Hawaii Council of Engineering Societies honored Dr. Yee with the HCES Lifetime Achievement Award in recognition of his significant contributions to the development of engineering in the State of Hawaii and noteworthy impact on the local engineering community.

In 2010, Dr. Yee, as lead author, presented a paper on the “The Sail @ Marina Bay” a tall slender 70-storey composite precast residential structure with an aspect ratio of 11.14.  The structure was also designed to conform with seismic zone 2A category in accordance with the International Building Code.

Internationally, Dr. Yee’s firms are presently involved in the design and construction monitoring low and high-rise building projects including commercial, residential, industrial and special purpose structures such as precast concrete long span aircraft hangars and numerous ocean-going concrete barges and platforms.








"Composite Application of Prestressed Concrete Units in Building Construction," Proceedings of 27th Annual Convention, Structural Engineers Association of California, Oct. 1958

"Prestressing at Work in Hawaii," by Alfred A. Yee and Charles W. Watson, Journal of the Prestressed Concrete Institute, Sept. 1960

"High-Rise Structures in Hawaii Combined Precast, Poured Concrete," Architectural Record, Oct. 1961

"Construction of Multi-Story Prestressed Concrete Buildings in Hawaii," Proceedings of the University of California Western Conference on Prestressed Concrete Institute, 1962

"Composite Precast Concrete Connections," Journal of the Prestressed Concrete Institute, April 1962

"The Domino System for High-Rise Buildings," Journal of the Prestressed Concrete Institute, Dec. 1964

"The Column Tree Framing System for High Rise Buildings," Proceedings Structural Engineers Association of California, 38th Annual Convention, Hawaii, 1969

"Design Considerations for a Precast Prestressed Apartment Building - Design for Erection Considerations," co-authored with Fred Masuda, PCI Journal, Nov-Dec 1974

“Design and Construction of Composite Precast Prestressed Concrete Structures on Land and Sea,” Keynote Paper from the 11th Arab Structural Engineering Conference, KFUPM, Dhahran, Saudi Arabia, Oct. 25-27, 2009

"Design and Construction of Oceangoing Pretensioned Concrete Barges," given before American Concrete Institute 1974 Annual Convention in Honolulu, Hawaii, Journal of the American Concrete Institute, April 1975

"Prestressed Concrete for Buildings," PCI Journal, Sept- Oct 1976

"Operational Experience with Prestressed Concrete Barges," co-authored with Pablo N. Sare,  presented before The Concrete Society and Royal Institution of Naval Architects, London, March 1977

"Prestressed Concrete Barges and Floating Platforms," presented at the Petroleum, Exploration, Drilling, and Pipeline Equipment Exhibition Seminar, Jan. 31 – Feb. 2, 1978, Mexico City, Mexico

"The Superiority of Concrete Honeycomb Construction for Marine Structures," presented at the First Symposium on Arctic Drilling Platforms, Los Angeles, California, Oct. 7, 1982

"One Hundred Washington Square:  Structural Design and Construction," co-authored with Chang Nai Kim, PCI Journal, Jan-Feb 1984

"Concrete Module for the Global Marine Concrete Island Drilling System," co-authored with Fred R. Masuda, Chang Nai Kim and Dean Doi, presented at the FIP/CPCI Symposia, Calgary, Alberta, Canada, Aug. 25-31, 1984

"Seismic Considerations for Precast Concrete Construction," presented at the Seminar on Precast Concrete Construction in Seismic Zones, Japan Society for the Promotion of Science/National Science Foundation, Oct. 29-31, 1986, Tokyo, Japan

"Design Considerations for Precast Prestressed Concrete Building Structures in Seismic Areas," PCI Journal, May-June 1991, Vol. 36, No. 3

“Precast Design and Construction Solutions,” presented at the International Housing Conference, Singapore, May 23-26, 2000

 “Social and Environmental Benefits of Precast Concrete,” PCI Journal, May/June 2001, and CONSPECTUS, July 2001 quarterly journal by the Housing & Development Board, Singapore

“Structural and Economic Benefits of Precast/Prestressed Concrete Construction,” PCI Journal, July-August 2001

“Design and Construction of Composite Precast Prestressed Concrete Structures on Land and Sea,” presented at The 11th Arab Structural Engineering Conference, KFUPM, Dhahran, Saudi Arabia, Oct. 25-27, 2009

“The Sail @ Marina Bay,” Proceedings of the Conference on Structural Marvels, Singapore, Dec. 13-14, 2010