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This document is an explanatory material regarding the overview of wooden buildings using the Home Connector and Toughness Connector provided by Scrimtech Japan Co., Ltd. It includes detailed explanations of the GIR, the features and challenges of the Home Connector, which is the first generation of GIR. Additionally, it introduces the features of the second generation GIR, the "Toughness Connector," as well as the achievements of frame structures, so please take a moment to read it. 【Contents (partial)】 ■ Core technologies used in 4-story frames ■ First generation GIR (Home Connector) ■ Features of the Home Connector construction method ■ Joint strength and rigidity of the Home Connector ■ Formulas for calculating bending strength and rotational rigidity ■ Achievements in frame structures *For more details, please download the PDF or feel free to contact us.

• Special wooden structures

In the K residence planned within the limited site conditions of Tokyo, the use of the high-strength seismic wall "Kabe Musou 450" allowed for the coexistence of a built-in garage on the first floor and a large open space on the second floor. In typical wooden houses, the installation of garage openings and large windows makes it difficult to secure load-bearing walls, but the excellent load-bearing performance of Kabe Musou 450 enables open planning while ensuring the necessary structural performance. The first floor features a spacious garage space with minimal columns and walls, while the second floor allows for a living space with abundant natural light and views through large openings. This is a construction example unique to Kabe Musou 450, demonstrating the ability to achieve high levels of seismic resistance, functionality, and design even on narrow urban lots.

• Special wooden structures

In the M residence planned on a small plot in Osaka City, high-strength seismic walls "Kabe Musou 450" were adopted to create an open living space within the limited site conditions. The facade features large glass openings on the south side, creating abundant natural light and a connection with the city. Typically, the arrangement of load-bearing walls would restrict large openings, but this has been made possible by the high load-bearing performance of Kabe Musou 450. Despite being wooden construction, it balances structural performance and design, overcoming the constraints unique to small plots, making it an advanced example of urban housing.

• Special wooden structures

This is a tree-like structure that balances large spans and design by supporting the roof beams with diagonal materials. It makes abundant use of locally sourced timber from Oita Prefecture, creating a high ceiling that generates an open space, providing students with a spacious, comfortable, and relaxing atmosphere. The joints utilize GIR (Glue-in-Rod: Home Connector) connections, achieving a beautiful finish with no visible hardware and high strength. As a place where students spend their daily lives, it enriches learning and interaction in a warm environment. 【Project Overview】 ■ Structure: Wooden ■ Number of Floors: Single-story ■ Total Floor Area: 1,958 m² ■ Location: Oita City, Oita Prefecture ■ Design: Azusa Design Co., Ltd. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

To achieve a spacious and open atmosphere, a planar truss structure has been adopted. GIR (Glue-in-Rod: Home Connector) joints are used at the connections of beams and diagonal members, resulting in a finish that highlights the inherent beauty of the wood. The joints are designed to be concealed, giving a clean appearance that harmonizes with the calm atmosphere of the entire space. 【Project Overview】 ■ Structure: Wooden with partial RC ■ Number of Floors: Single-story ■ Total Floor Area: 1,133 m² ■ Location: Otofuke Town, Kato District, Hokkaido ■ Design: Atelier Haru Co., Ltd. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

The approximately 25m long tension beam was divided into three parts for on-site transportation and is connected using GIR (Glue-In Rod: Home Connector). The connection with the tension materials is similarly joined with GIR, enhancing the overall rigidity and stability of the structure. Furthermore, when connection hardware is exposed, there are concerns about the effects of pool chlorine; however, since GIR houses the hardware internally, it has a significant advantage in terms of both durability and safety. 【Case Overview】 ■ Structure: Wooden with some RC components ■ Floors: Basement 1 floor, Above ground 2 floors ■ Total floor area: 1,993.93m2 ■ Location: Asago City, Hyogo Prefecture ■ Design: Ogawa Architectural Design Office, Inc. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

The wooden bridge restored at the San-no-Maru of the ruins of Horikoshi Castle is a bridge recreated based on the structures seen in castle fortifications during the Edo period. It has become an important facility that conveys the atmosphere of that time without compromising the landscape of the castle ruins. GIR (Glue-in-Rod: Home Connector) is used at the joints, playing a role in the reproduction of the wooden bridge. [Case Overview] ■ Structure: Wooden ■ Location: Hirosaki City, Aomori Prefecture ■ Design: Souusha Co., Ltd. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

This is a children's welfare facility that forms a folded roof with a single panel of approximately 23m x 6m, using CLT panels with a thickness of 150mm joined by GIR (Glue-In-Rod: Home Connector). The CLT serves as both the rafters, sheathing, and ceiling finish, creating a spacious area without beams or girders. By using concealed connections that do not expose hardware, the building is finished as a quasi-fireproof structure while preserving the texture of the wood. 【Case Overview】 ■ Structure: Wooden ■ Number of Floors: Single-story ■ Total Floor Area: 484.92m² ■ Location: Konan City, Kochi Prefecture ■ Design: Soyu Architectural Workshop, Co., Ltd. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

The main sales area is covered by a large roof made of wood, stacked in two layers, resembling overlapping branches and leaves. Supporting this large roof are the diagonal columns "Kibana" made of cedar logs, which expand in all directions like naturally grown trunks and branches. By using GIR (Glue-in Rod: Home Connector) joints at the intersection points, the stability of the shape and structural performance is ensured without the use of metal fittings like rings, achieving a light and delicate design. GIR is also used for the connections at the tops and bases of the columns. 【Project Overview】 ■ Structure: Wooden ■ Number of Floors: Single-story ■ Total Floor Area: 863.47m2 ■ Location: Miyoshi City, Hiroshima Prefecture ■ Design: NAF Architect & Design *For more details, please refer to the related links or feel free to contact us.

• Joints between components

In heavy snowfall areas, despite being a wooden structure, a light roof expression and a large space for restaurants and shops were achieved by adopting "keel beams" and "lattice beams," which are used in boat hull structures, for the roof framing. By rigidly connecting the joints with GIR (Glue-In-Rod: Home Connector), structural challenges were resolved. Additionally, a curved section was incorporated into the lattice ceiling, adding a soft accent to the space. 【Project Overview】 ■ Structure: Wooden ■ Number of Floors: Single-story ■ Total Floor Area: 393.34m2 ■ Location: Iwamizawa City, Hokkaido ■ Design: NTT Facilities, Inc. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

The platform's roof, eaves, corridors, and tower are constructed using the original three-dimensional "Shura-gumi" structure, creating a beautiful wooden space that spans 160 meters in length. GIR (Glue-In-Rod: Home Connector) is used at the joints, achieving a high level of design and structural performance without exposing any hardware. 【Project Overview】 ■ Structure: Wooden ■ Floors: 2 above ground ■ Total Floor Area: 783.07 m² ■ Location: Aso District, Kumamoto Prefecture ■ Design: Nube Co., Ltd. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

The brace joints use a type of connection called GIR (Glue-in-Rod: Home Connector) that has no exposed metal, achieving both structural performance and refined aesthetics. The layers of cedar lattice and glass-aluminum sashes above the third floor create a three-dimensional facade that resembles woven wood, giving the entire building a light and delicate expression. 【Project Overview】 ■ Structure: Steel frame with some RC ■ Floors: Basement 1 + 3 above ground (partly 4) ■ Total floor area: 16,817.69 m² ■ Location: Oita City, Oita Prefecture ■ Design: Shigeru Ban Architects *For more details, please refer to the related links or feel free to contact us.

• Joints between components

The design blends into the surrounding landscape and creates an open and spacious roof space. The roof is finished entirely in wood, and by using wooden materials for the interior as well, the warmth of nature is spread throughout the entire space. To construct the large space while utilizing the properties of the materials, a reciprocal structure is adopted. This is a structural method where multiple beams support each other to ensure stability. Furthermore, at the joints, GIR (Glue-In-Rod: Home Connector) joints are used, achieving both aesthetic appeal and structural performance without exposing hardware. 【Project Overview】 ■ Structure: Wooden + Steel Frame ■ Number of Floors: Single Story ■ Total Floor Area: 293.71m² ■ Location: Chuo Ward, Fukuoka City, Fukuoka Prefecture ■ Design: Atelier Sankaku Scale *For more details, please refer to the related links or feel free to contact us.

• Joints between components

Green Commons aims for an open configuration that allows for a pleasant line of sight, adopting a clear frame structure using columns and beams without load-bearing walls. By using GIR (Glue-in Rod: Home Connector) at the joints, it achieves a light and cohesive space where structure and design are harmonized. 【Project Overview】 ■ Structure: Wooden + Steel Frame ■ Floors: 3 above ground ■ Total Floor Area: 6,495.95 m² (Wooden part 1,400 m²) ■ Location: Beppu City, Oita Prefecture ■ Design: Takenaka Corporation *For more details, please refer to the related links or feel free to contact us.

• Joints between components

The CLT roof is lightweight yet possesses high rigidity, supported by delicate steel columns. By creating a continuous structure that bends, it generates variations in ceiling height, providing the space with a natural rhythm and depth. The horizontal joints of the roof panels utilize GIR (Glue-In-Rod: Home Connector) connections, achieving a seamless appearance without visible seams. Without being constrained by the maximum width of the CLT, it forms a large roof with a sense of unity, creating a clear and spacious interior. [Project Overview] ■ Structure: Steel frame + Wooden structure (Roof CLT panels) ■ Number of floors: Single-story ■ Total floor area: 267.91 m² ■ Location: Kobe City, Hyogo Prefecture ■ Design: ofa *For more details, please refer to the related links or feel free to contact us.

• Joints between components

As a feature of the structure, the northern half of the west wing employs a frame structure, while the southern half uses a checkerboard shear wall. For the columns and beams of the frame structure, domestically produced larch structural laminated timber and larch structural LVL from Shinano Town are used, while the shear walls also utilize larch structural LVL from Shinano Town. The joints of the two-way frame structure adopt GIR (Glue-In-Rod: Home Connector) connections, achieving a balance between the beauty of wood and structural performance. 【Project Overview】 ■ Structure: Wooden with partial RC and steel construction ■ Floors: 3 above ground, 1 tower ■ Total floor area: 14,568.34 m² ■ Location: Nagareyama City, Chiba Prefecture ■ Design: Nippon Sekkei Co., Ltd. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

This is an oval-shaped building characterized by a umbrella-like structure where beams made of cedar laminated wood radiate from two pillars. Inside, cylindrical wooden frameworks are provided, which support the roof structure. GIR (Glue-In-Rod: Home Connector) is used at the joints and beam intersections, achieving high design quality and structural performance without exposing hardware. 【Project Overview】 ■ Structure: Steel frame + Wooden structure ■ Floors: 1 above ground ■ Total floor area: Approximately 7,421.90 m² (entire museum) ■ Location: Otake City, Hiroshima Prefecture ■ Design: Shigeru Ban Architects Co., Ltd. *For more details, please refer to the related links or feel free to contact us.

• Joints between components

Due to the structure of the indeterminate ramen, which is constantly subjected to significant bending stress at the joints, the home connector method using GIR (glued-in rod) was adopted to meet the requirement of minimizing the exposure of hardware as much as possible. This has achieved a balance between aesthetic design and structural performance. [Project Overview] ■ Structure: Wooden ■ Floors: 2 above ground ■ Total floor area: 2480.70 m² ■ Location: Taki Town, Mie Prefecture ■ Design: Akasaka Tomoya Architectural Design Office *For more details, please refer to the related links or feel free to contact us.

• Joints between components

The upper pergola, symbolizing the forest, is constructed using 286 logs sourced from Kumamoto, Oita, Miyazaki, Shimane, Nara, Osaka, Wakayama, Tottori, and Tokushima, each tagged for traceability. The triangular lattice and beams, featuring traditional decorative patterns, create a play of light and shadow that envelops visitors like dappled sunlight. The joint for the GIR (Glue-in Rod: Home Connector), which requires structural strength at the top of the log columns, is designed to allow for a gap for vertical cutting of the materials. The lower part of the columns is not structurally fastened, allowing for easy disassembly. After the expo, it will be relocated to Uzbekistan. 【Project Overview】 ■Structure: Wooden and partially steel structure ■Floors: 2 stories ■Total floor area: 640.43 m² ■Location: Osaka Prefecture (Expo site) ■Concept & Design: ATELIER BRÜCKNER ■Design Supervision: Tokuoka Design *For more details, please refer to the related links or feel free to contact us.

• Joints between components

Amid the trend of decarbonization and the promotion of wood utilization, there is increasing attention on wooden buildings and medium to large-scale wooden constructions. However, there are also many cases where the introduction of wooden frame structures is hesitated due to challenges such as "the construction is complex," "the workload on-site is significant," and "there are concerns about variations in construction quality." The 'TEC-S (GIR joint)' is a wooden frame structure system that ensures high structural performance necessary for wooden buildings while achieving easy construction. It employs a dry construction method primarily based on nut tightening on-site, which enhances construction efficiency and stabilizes quality. This system adopts a prefabrication method where columns, beams, and joint components are processed in advance at the factory. On-site, it only requires the delivery of components and the assembly of joints to be tightened with nuts, which is expected to reduce on-site labor, shorten construction time, lessen dependence on skilled labor, and decrease construction errors. 【Features】 ■ High reliability achieved through BCJ certification ■ Simultaneous reduction of construction burden and enhancement of quality in wooden building construction ■ Adoption of a frame structure that does not rely on shear walls

• Special wooden structures

Amid the realization of a decarbonized society and the trend towards wooden urban structures, there is increasing attention on medium to large-scale wooden buildings. However, the realization of wooden buildings requires a frame structure system that combines high structural performance and constructability. The 'TEC-S (GIR Joint)' is a wooden frame structure system that employs a uniquely developed toughness connector and cube connector, achieving high strength, high rigidity, and high toughness. It is suitable for wooden buildings of up to four stories and balances construction efficiency with high seismic performance. By adopting high-performance joint technology at the column base and column-beam joints, it ensures the structural performance necessary for wooden buildings. 【Features】 ■ High reliability due to BCJ certification ■ Dry construction using only nut tightening ■ Supports the efficiency of structural calculations and considers sustainable design with material reuse ■ Significantly reduces on-site work issues that have been challenges in conventional wooden frame structures.

• Special wooden structures

In wooden architecture, the demand for large openings while ensuring seismic performance is increasing year by year. However, with conventional load-bearing walls, the amount of wall required increases to secure the necessary strength, often leading to constraints in the arrangement of windows and openings. The "Wall Musou 450" is a high-strength wall column that achieves a high load-bearing performance of 29 times, despite being only 450mm wide. It ensures the necessary seismic performance with a narrow wall, enabling designs with large openings and spacious areas. By adopting narrow walls, it is suitable for buildings that require large openings, such as homes wanting to install large windows, fully glass-walled stores, open and airy offices, exhibition facilities, public facilities, and wooden commercial buildings.

• Special wooden structures

In wooden construction, ensuring seismic performance and improving spatial design flexibility are important challenges. "Wallless Double 450" is a new structural component that integrates columns and high-strength walls. Despite its width of 450mm, it achieves an industry-leading performance with a wall multiplier of 29 times, significantly enhancing the flexibility of architectural planning by eliminating the need for numerous conventional load-bearing walls. It enables large openings and spacious designs that were difficult with traditional load-bearing walls. This high-strength wall column can accommodate a wide range of applications, from residential to medium and large-scale wooden buildings. 【Features】 ■ Achieves a wall multiplier of 29 times with a width of 450mm ■ Integrates columns and high-strength walls ■ High reliability due to BCJ certification ■ Suitable for both residential and non-residential wooden buildings

• Special wooden structures

As large-scale and high-rise wooden buildings continue to advance, designers and construction professionals are required to balance "structural safety" and "design flexibility." The 'Home Connector Method (GIR Joint)' achieves high joint strength and rigidity while accommodating various structural forms and design concepts, making it widely adopted from residential buildings to public facilities and large-scale wooden constructions. This jointing technology integrates wood using a dedicated connector and adhesive inserted within the wood, reducing play at the joints and ensuring high rigidity, which enables advanced structural design. 【Features】 ■ Highly reliable jointing technology with certification ■ Clear design methodology compatible with structural calculations ■ Ability to control the strength of joints

• Special wooden structures

In recent years, there has been increasing attention on "wooden frame structures" that can achieve both open large spaces and high design quality in stores, public facilities, offices, and residences. In typical wooden joints, hardware can sometimes become a design constraint. However, the 'Home Connector Method (GIR Joint)' utilizes a unique technology that accommodates the joining hardware within the wood itself, ensuring the high strength and high rigidity required for wooden frame structures while achieving a beautiful wooden structure without exposed hardware. This method is suitable for buildings that prioritize design, such as stores, hotels, childcare facilities, public facilities, and offices. 【Features】 ■ High-strength and high-rigidity joints compatible with wooden frame structures ■ High design quality achieved as the joining hardware is not visible ■ Possible expansion into various structural forms

• Special wooden structures

"I want to build a wooden building, but construction feasibility and cost are challenges." "I want to achieve both seismic resistance and construction efficiency in medium to large wooden buildings." "I want to design wooden frame structures more rationally." TEC-S (GIR joint) is a wooden frame structure system developed to address these challenges. By adopting our uniquely developed "Toughness Connector" and "Cube Connector," we have achieved high strength, high rigidity, and high toughness, enabling dry construction on-site with only nut tightening, while accommodating wooden buildings of up to four stories. [Features] ■ Realizes efficiency in the construction process for wooden buildings and medium to large wooden structures. ■ Structural performance capable of supporting wooden buildings of four stories. ■ Compatible with the reuse of wood and circular construction.

• Special wooden structures

The Wall Musou 450 is a high-strength wall column with a width of 450mm that integrates pillars and shear walls, achieving an industry-leading maximum wall multiplier of 29 times. It enables the "ensuring of seismic performance in narrow sites" and the "creation of large open spaces," which were difficult with conventional methods. It has obtained certification from the Japan Architectural Center, and is widely adopted in various applications from residential to non-residential and medium to large-scale wooden buildings. Furthermore, it is highly regarded for balancing performance and aesthetic appeal. Q: Do you have any of the following challenges? - Insufficient shear walls in narrow residential areas... - Wanting to secure large openings in stores or offices... - Wanting to reduce wall volume while improving seismic performance... - Wanting to enhance design flexibility in wooden construction... - Wanting to streamline construction processes... - Wanting to create beautiful wooden spaces without visible hardware... The Wall Musou 450 is a next-generation high-multiplication shear wall that solves these challenges.

• Special wooden structures

The Home Connector is a wood joining system that employs the GIR (Glued In Rod) joining technology. By housing the joining hardware within the wood and integrating it with adhesive, it achieves high rigidity, high seismic resistance, and high design quality in wooden structures, which were difficult to realize with conventional methods. With the use of the Home Connector, structural forms that were previously challenging in wooden architecture, such as wooden frame structures, cantilevers, bracing, tree-like structures, and lattice structures, can now be realized. Furthermore, it allows for the joining of different materials, such as wood with steel frames and wood with reinforced concrete. There are numerous applications ranging from residential buildings to medium and large wooden structures, public facilities, and commercial establishments. 【Features of the Home Connector】 ■ High strength and high rigidity Enables semi-rigid connections that minimize play at the joints Achieves wooden frame structures and high seismic resistance structures ■ Beautiful finish with hidden hardware Since the joining hardware is housed within the wood, it does not compromise the natural beauty of the wood, allowing for high-design wooden architecture that faithfully expresses the architect's intent ■ Excellent durability The hardware is completely protected by epoxy resin, suppressing rust and condensation Capable of withstanding harsh environments such as salt damage areas and hot water pools

• Special wooden structures

The home connector is a hardware that allows for strong, beautiful, and easy joining of wood, commonly referred to as GIR. It can be used not only for general wood joints and connections but also as a joining hardware for structural frameworks such as frame structures.

• Housing structure technology/long-term superior housing technology

The "Kabe Musou 450" is a high-strength wall column that integrates pillars and shear walls, achieving a width of 450mm and a wall multiplier of 29 times. Key features include the "Toughness Connector," a hardware that realizes high strength, high rigidity, and high toughness through GIR, and the "Cube Connector," a box hardware used to connect to the foundation. It enables easy installation by simply tightening the nuts on anchors installed in the foundation, using two "Toughness Connectors" that have a maximum tensile strength of 100kN each, allowing it to withstand a tensile force of 200kN. 【Features】 ■ Available in two types: 120×450 and 150×450 ■ Increased design flexibility due to the realization of large openings ■ Simple installation with just nut tightening ■ Seamless column base hardware that is beautiful without exposing hardware in indoor spaces ■ Evaluation certificate obtained from the Japan Architectural Center ■ Winner of the Good Design Award for 2024 *For more details, please refer to the related links or feel free to contact us.

• Renovation and repair methods

This document introduces examples of applications for the "Home Connector Method" handled by Scrimtech Japan Co., Ltd. This method is an open joining technology that can be used in various wooden structures with creative ideas. So far, it has been used in various structural forms such as truss structures, large-span structures with brace forms, and lattice beam structures. [Examples of Applications (Excerpt)] ■ Truss Structures ■ Large-span Structures with Brace Forms ■ Lattice Beam Structures ■ Cantilevers ■ Tension Beams, etc. *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods

This document introduces the achievements of the "Home Connector Method" handled by Scrimtech Japan Co., Ltd. This method is a technology that allows for the easy, strong, and beautiful joining of wood in wooden construction. The strength and rigidity of the joints are among the highest in existing joining methods, and it is also used as joining hardware for wooden frame structures. 【Featured Achievements (Excerpt)】 ■ Hokkaido Toyako Summit International Media Center ■ Wood Industry Hall (Tokyo Wood Wholesale Cooperative) ■ Asago Community Pool "Whale" ■ Aichi Expo Japan Pavilion Nagakute Venue ■ Kosa Town Comprehensive Welfare Center, etc. *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods

This document contains information about in-plane shear tests conducted by Scrimtech Japan Co., Ltd. on two types of six CLT wall panels submitted by Yamasa Wood Co., Ltd. regarding their structural walls. The tests were carried out in accordance with the "Testing and Evaluation Procedures for Wooden Structural Walls and Their Multipliers" established by our foundation. A table is provided that lists the test specimens, calculation methods, and result values, so please refer to it as well. [Test Details] ■ In-plane shear tests on structural walls using two types of six CLT wall panels *For more details, please download the PDF or feel free to contact us.

• Other wall materials