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PCaPC method

1. Overview

The PCaPC (Precast-Prestressed Concrete) method involves using lifting equipment and other equipment to perform on-site assembly of precast (PCa) members, made beforehand at a factory, and then introducing prestress to pressure bond the PCa members into a framework.


Cast-in-place PC, PRC methods

The cast-in-place PC (prestress concrete) and PRC (prestress reinforced concrete) methods involve wiring PC steel members for working cast-in-place beams and other structural elements and, after the concrete is set, introducing tensile force. In terms of design, the PC method is a method which does not tolerate flexural cracking, and the PRC method is a method which tolerates flexural cracking but limits crack width.



2. Key Features

Provides high-quality buildings

By adopting high-strength concrete and precast members, buildings are of high quality with outstanding durability.


Flexibility of plan development

The use of large spans makes it possible to construct space without pillars inside of dwelling units, thereby providing terrific flexibility in spatial plan development.


Provides buildings with outstanding earthquake resistance

The use of prestress force makes it possible to build structures that do not develop cracks following earthquakes, thereby contributing to making reliable buildings with outstanding earthquake resistance.


Provides buildings which do not lose their asset value

Compared with RC structures, buildings made with this method do not develop cracks, thereby helping ensure they do not lose their asset value over time.


Environmental consideration

Because the pillars, beams and other members are precast, this greatly contributes to a reduction in the use of wooden formwork.


Shortened frame construction period

Because a pressure bonding method is used on the precast members, the frame construction period is shortened.



3. Comparisoning with other methods

Structure type-specific evaluation table (ex. six-story office building)

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