建研 List of Products and Services

This catalog is a collection of case studies featuring examples of the "PCa/PC method" conducted by our company. This method involves constructing buildings by integrating precast components such as columns and beams manufactured in a factory through prestressing. We present various examples of buildings, including "high schools," "memorial halls," "rugby fields," "arenas," and "office buildings." [Featured Case Studies (Excerpt)] ■ Schools ■ Memorial Halls ■ Rugby Fields ■ Arenas ■ Gymnasiums ■ Museums *For more details, please refer to the PDF materials or feel free to contact us.

• Special Construction Method
• Civil Engineering Method
• Specialized Construction

The "PCa/PC method" provided by Kenken Co., Ltd. is a construction method that integrates precast components such as columns and beams manufactured in a factory through prestressing to construct buildings. There are various variations depending on site conditions, construction period, and costs, such as using cast-in-place concrete for column-beam joints or making columns of reinforced concrete. 【Examples of Applications】 ■ Buildings ■ Stadiums ■ Educational Facilities ■ Offices and Government Buildings ■ Warehouses and Hospitals ■ Others, etc. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods
• Ground foundation construction method
• Civil Engineering Method

The 'Collection of Case Studies on the Adoption of Pre-stressed Concrete in Elderly Care Facilities' is a compilation that showcases examples of the introduction of high-performance PC construction methods that respond to various functional requirements of structures through the combination of pre-stressing and precast concrete. It is currently available as a free gift. [Featured Case Studies] - School facilities construction - Residential buildings, hospitals, office buildings, logistics facilities - Symbolic spaces - Large spaces - Seismic reinforcement methods, and more For more details, please contact us or download the catalog.

• Vibration isolation, vibration control, and earthquake resistance construction
• Heat insulation and heat shielding methods
• Reinforced concrete structural systems (including PCa)

"The collection of case studies on the PC construction method adopted in places like Fukuoka Dome" is a compilation of examples showcasing the introduction of a systematic construction method aimed at improving the quality and constructability of structural frameworks in sports venues and leisure facilities. It is currently available for free as a gift. [Featured Cases] - School facilities construction - Residential buildings, hospitals, office buildings, logistics facilities - Symbolic spaces - Large spaces - Seismic reinforcement methods, and more For more details, please contact us or download the catalog.

• Vibration isolation, vibration control, and earthquake resistance construction
• Heat insulation and heat shielding methods
• Reinforced concrete structural systems (including PCa)

The "Case Study Collection of PC Seismic Reinforcement Methods Adopted by Tsukuba University and Others" is a collection that presents examples of a construction method that involves installing new frames made of precast prestressed concrete (PCa・PC) structure on the exterior of existing buildings. This method connects the existing frames and the new frames using slabs and PC steel bars to transmit horizontal forces, thereby increasing the seismic capacity of the existing building through the reinforcement provided by the new frames. It is currently available for free as a gift. 【Featured Cases】 ○ School facilities construction ○ Residential buildings, hospitals, office buildings, logistics facilities ○ Symbolic spaces ○ Large spaces ○ Seismic reinforcement methods, and others For more details, please contact us or download the catalog.

• Vibration isolation, vibration control, and earthquake resistance construction
• Heat insulation and heat shielding methods
• Reinforced concrete structural systems (including PCa)

We provide high-performance PC (prestressed concrete) buildings that meet the requirements for distinctive facility statuses (symbolic spaces), multipurpose and flexible facilities (high-load large spaces), safe and long-lasting facilities (high-durability buildings), and facilities that harmonize with society (environmental contributions) through the combination of prestressing and prestressed concrete. - By tensioning PC steel materials, we enable high loads and large spans while improving durability and seismic resistance. - We promote labor-saving and manpower-reducing measures in on-site construction, achieving shorter construction periods and demonstrating economic advantages. - With high construction precision and the ability to accommodate diverse designs, we realize high added value.

• Renovation and repair methods
• Earthquake-resistant construction method

The on-site cast prestressed concrete method involves placing a sheath with PC cables inside the formwork at the construction site, and applying prestress using hydraulic jacks after the concrete reaches its strength. 【Features】 ○ Characteristics of the PC method: Allows for large spans, with smaller beam heights ○ Types of tensioning methods: VSL method, Freyssinet method, CCL method, SM method ● For other functions and details, please contact us.

• Special Construction Method

The PCa・PC (Precast Prestressed Concrete) method is a construction technique that achieves high durability and high-performance structures. 【Features】 ○ It allows for high loads and large spans. ○ Since the components are precast prestressed concrete elements, a short construction period, high quality, and high durability are guaranteed. ○ Because it is prestressed concrete, it can be designed with cross-sections equivalent to SRC (Steel Reinforced Concrete). ○ The joints between columns and beams are integrated through compression caused by prestressing. ○ Columns are tensioned with PC steel bars, and beams are tensioned with PC steel wires. ○ The floor uses half PC composite floor slabs, which are integrated with topping concrete. ● For other functions and details, please contact us.

• Joints between components

This is a construction method that combines "external insulation construction" and "precast concrete construction" to create a high-quality and environmentally friendly next-generation standard for external insulation. Sufficiently thick insulation material is installed between the outer PC panel and the inner PC panel, and a ventilation layer is secured between the outer PC panel and the insulation material. The comfortable internal environment created by this method is suitable not only for residential buildings but also for hospital and office buildings. 【Features】 ○ Comfortable living environment; uniform room temperature, radiant heat from the structure ○ Healthy indoor environment; prevents condensation and the growth of mold and mites ○ Energy saving; high durability and high insulation of the structure ○ High airtightness and high insulation; continuous insulation layer with few thermal bridges ○ High durability; insulation layer protects the concrete ○ Economic and asset value; effective floor area increase, high durability, high performance ● For other functions and details, please contact us.

• Insulation work
• Heat insulation and heat shielding methods