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TECHNOLOGY AND SERVICE

Full Precast Concrete Building Construction Method

SQRIM (Sumitomo-Mitsui Quick RC Integration Method)

 

SQRIM is a full precast concrete method that eliminates cast-in-place (CIP) concrete on the building’s main structural elements such as the columns, beams, and the beam-column joint core. In SQRIM, the beam and beam-column joint core are fabricated as a single precast element. These elements are vertically installed in the construction site. Grouted mechanical sleeves are used to join the precast elements. To emulate an RC structure, grout is injected into the joints and into the holes to rigidly connect the precast elements. The advantages of SQRIM application are: shorter construction period, high quality precast elements, elimination of formworks and temporary supports, and savings on labor.  Since 2003, SQRIM has been applied to 40 building projects in Japan.  

"CWIWC (Controllable Wide Wall Column) method" - a high-rise tabular housing construction methodology

SQRIM-H (Sumitomo-Mitsui Quick RC Integration Method - Horizontal)

 

Developed from SQRIM, SQRIM-H is also full precast concrete method that eliminates cast-in-place (CIP) concrete and has the same characteristics and advantages of SQRIM. Grouted mechanical sleeves are also used to connect the precast elements. In SQRIM-H, the beams can be fabricated separately from the beam-column joint core and are simply shaped compared to the SQRIM’s single beam and beam-column joint core element. Thus, beams are easily installed by sliding horizontally (indicates the “H”) to join with the column. The method can be applied to any building with complicated shape and structural framing. SQRIM-H has been applied to 8 building projects since 2008.

HI-DOC method

I-SQRIM (International - Sumitomo-Mitsui Quick RC Integration Method)

 

The I-SQRIM is specially intended for the overseas (international) market and was applied for the first time in a petrochemical plant pipe rack in Malaysia. The original design of the pipe rack was conventional precast which still required cast-in-place (CIP) concrete to rigidly connect the precast elements. The original design was changed with the application of SQRIM method. This includes changing the original lap reinforcement to mechanical joint, L-shaped hook anchor reinforcements to mechanical end anchors, and to rigidly connect the precast elements grout injection was applied instead of CIP. Since CIP concrete is also eliminated in I-SQRIM, it achieves the same characteristics and advantages of SQRIM.