オクジュー List of Products and Services

The "OJ type/ND type" is a seismic ceiling construction method that aims to integrate the structural frame and ceiling by directly connecting structural materials with the same strength as the structural frame to the ceiling substrate, thereby achieving semi-structuralization. It prevents the amplification of vibrations on the ceiling surface, similar to a suspended ceiling, and allows for ceilings that do not fall under specific ceiling regulations. (Detailed settings will be discussed in meetings.) Additionally, by arranging the shape of the structural materials and limiting the fixed length of the ceiling, it can also accommodate sloped ceilings and other variations. 【Features】 ■ Aims for integration of the structural frame and ceiling ■ Prevents amplification of vibrations on the ceiling surface like a suspended ceiling ■ Allows for ceilings that do not fall under specific ceiling regulations ■ Can accommodate sloped ceilings by limiting the fixed length of the ceiling ■ Enables the construction of a consistently smooth ceiling using support materials *For more details, please refer to the linked examples of seismic ceiling construction or feel free to contact us.

• Ceiling panels and decorative panels
• Interior construction
• Renovation and repair methods

The "MB Louver" is a product developed with the concept of directly designing the ceiling under material (batten: [M] Metal [B] Bar). It uses color-coated steel sheets that are also used for roofs and exterior walls, making it suitable for outdoor use. The standard sizes for the louver shape are double type (W50×H25) and single type (W25×H25). Additionally, custom sizes can be produced in the range of W25 to 150 × H19 to 50, so please inquire about the combinations of W and H. 【Features】 ■ Uses color-coated steel sheets ■ Suitable for outdoor use ■ Louver shape ・Standard sizes are double type (W50×H25) and single type (W25×H25) ・Custom sizes can be produced in the range of W25 to 150 × H19 to 50 （W≧H） *For more details, please refer to the PDF document or feel free to contact us.

• Interior wall decoration

You can search for actual construction examples centered around our seismic ceiling substrate "OS Ceiling" series. (Images will be added as needed) Please visit our company website from the link below.

• Ceiling panels and decorative panels
• Metallic base
• panel

In general, seismic reinforcement of ceilings involves increasing the strength of the joints in the ceiling framework to withstand the seismic forces acting on the ceiling. However, reinforced ceilings tend to have a large number of components and become heavier. Lite Safe features a simple design where glass wool boards, which serve as the ceiling finishing material, are simply placed on aluminum T-bars. Additionally, by consolidating equipment into separate suspended equipment panels away from the ceiling surface, the mass of the ceiling components is kept below 2 kg per square meter. Features: - Mass of ceiling components is below 2 kg per square meter*1 - Shorter construction time and lower cost compared to seismic ceiling specifications such as "specific ceilings" - Partial reuse of existing ceiling frameworks is possible, accommodating renovation work *1 For equipment panels at 1200, it cannot be kept below 2 kg per square meter. Additionally, for 1600 and 1800, it may not be possible depending on the ceiling shape, layout, and additional components. [Product Catalog Contents] - Component list - Ceiling framework layout examples - Verification results from shake table tests - Comparison table of finishing material sound absorption rates If you are interested, please download the PDF or contact us.

• Metallic base
• Vibration isolation, vibration control, and earthquake resistance construction
• Interior construction

We have made it possible to construct a 10m wall substrate without using reinforcement materials. Since it can be constructed in the same way as conventional methods, we expect to shorten construction time and costs in places such as cinemas, theaters, shopping malls, and factories with two-story atriums. <Features> 1. We have made it possible to construct a lightweight steel partition wall substrate of 10m (P-100TW is 9m) without the use of reinforcement materials, which was previously not possible. 2. Since high walls can be constructed in the same way as conventional methods, we can significantly reduce labor costs, making it effective in places like cinemas, theaters, shopping malls, and factories with two-story atriums. 3. The wall thickness can be 125mm (P-100TW is 100mm), allowing for easy installation of piping systems, eliminating the need for double walls. For more details, please download the PDF or contact us.

• Other wall materials
• Metallic base
• Interior construction

Slide the upper and lower brackets to securely fix the steel flange and the pre-piece material without welding. Since the brackets can be fixed to the pre-piece material with screws, the strength in the out-of-plane direction has increased (which also contributes to preventing detachment). Although the left and right are separate products, we have made it easier to visually confirm by changing the color of the nuts.

• Metallic base
• Interior construction
• others

This document is a guidebook summarizing information from the Ministry of Land, Infrastructure, Transport and Tourism's "Explanation of the 2016 Standards (Seamless Ceilings)." Additionally, we have conducted strength verification for our products in accordance with these standards, and we would like to report on this. Please also refer to the separate clip impact test report. 【Contents】 ■ Specifications for seamless ceilings ■ Recommended installation methods for ceilings and walls ■ Testing and evaluation methods for clip joints ■ OT-S Clip Impact Test (JIS Type 19 S Bar Clip) ■ OT-W Clip Impact Test (JIS Type 19 W Bar Clip) ■ ND-S Clip Impact Test (ND Type 25 S Bar Clip) ■ ND-W Clip Impact Test (ND Type 25 W Bar Clip) *For more details, please refer to the PDF document or feel free to contact us.

• Metallic base
• Vibration isolation, vibration control, and earthquake resistance construction
• Interior construction

This OS ceiling sealing "OTO-LESS" is a ceiling substrate material that achieves both vibration-proof and earthquake-resistant performance, which was difficult with suspended ceilings. By simply fastening the braces for seismic reinforcement to the junctions of the ceiling substrate, it can demonstrate high seismic performance while preventing sound transmission. The natural frequency of the vibration-proof system is excellent, with single types at 10-13 Hz and double types at 7-9 Hz. 【Features of OS Ceiling HG Type "OTO-LESS"】 ■ Ideal for preventing ceiling collapse in large spaces ■ Compatible with concert halls and cinema complexes ■ Balances vibration-proof and earthquake-resistant performance in suspended ceilings ■ Can be adapted to specific ceilings * Currently, it is limited to flat ceilings. Future plans include compatibility with sloped ceilings.

• Steel construction
• Interior construction
• Sports related facilities

At Okuju, we handle interior and exterior construction work for buildings (walls, ceilings, etc.). We have a track record of working on notable buildings in the past, including government offices, airports, and hotels. You can view many other achievements through the external links. (Please click on each image at the link.) 【Construction Achievements (Excerpt)】 ■ Skyscrapers ■ Exhibition Halls ■ Earthquake Recovery Work ■ Ceiling Seismic Reinforcement Work ■ Renovation Work *For more details, please refer to the PDF materials or feel free to contact us.

• Steel construction
• Interior construction
• others

"Hakobou" is a flat-hand truck used in sets of two. With a compact size and a maximum load capacity of 500 kg per unit, it features polyurethane wheels that allow for smooth movement in various directions. This product has passed the JIS inspection for hand trucks.

• others

"Okuzo" is a wooden pallet made of 100% recyclable PP (polypropylene). It is very strong with a safe allowable load of 8.3t per unit and can be reused repeatedly. Since it is made entirely of polypropylene, it is recyclable and does not become industrial waste. Additionally, it can be stacked compactly, making it convenient for transportation, and its unique Z-shaped design with a thickness of 15mm allows for stable loading of heavy items. 【Features】 ■ Recyclable ■ Can be reused repeatedly instead of being disposable ■ Very strong with a safe allowable load of 8.3t per unit ■ The loading surface has fine dimple processing, making it slip-resistant ■ Color selection is possible based on the quantity ordered (Special colors are available for orders of 3000 units or more) *For more details, please refer to the PDF document or feel free to contact us.

• others

This catalog is the product catalog of Okuju Co., Ltd., which handles seismic ceiling construction methods, large-scale ceiling construction without scaffolding, exterior and interior panels, and more. All buildings exist within a three-dimensional space, and that space exists within the finite. However, as seen in the examples of our predecessors, the possibilities in terms of "creation" in ideas and expressions are infinite. We at OKUJU, as contributors to the creation of buildings that form the backbone of cities, will continue to strive towards the infinite possibilities of urban creation. [Featured Products (Excerpt)] ■ Seismic Ceiling Substrate ■ NWD Method (Weldless Steel Substrate Construction Method) ■ Large Space Ceilings (Scaffolding-Free Method) ■ Interior and Exterior Metal Panels ■ Canvas Ceilings *For more details, please refer to the PDF materials or feel free to contact us.

• Interior construction
• Unit and other construction
• Other commercial buildings and service facilities

In various life activities where people work, live, play, and relax, the type of space one occupies is very important. OKUJU creates spaces where people can feel comfortable from the depths of their hearts with their whole bodies, allowing them to continue pursuing their dreams without forgetting to smile. In carrying out its business, OKUJU adheres to the rules of the company and the site, responds to the expected trust, and accumulates credibility by not neglecting considerations for quality, safety, and the environment. 【Business Description】 ■Creating spaces through the construction of ceilings, walls, and more. *For more details, please refer to the PDF document or feel free to contact us.

• Gypsum board and moldings
• Curtain wall construction
• Interior construction

We would like to introduce a construction case of a station handled by Okuju. In the railway sector, damage caused by pigeons to station buildings and platform roofs is a very serious issue. This time, we received a request from West Japan Railway Company for a finish using ceiling base materials, and as a result of development considerations, we adopted the "MB Louver," which prevents pigeons from entering the ceiling interior. It is an extremely simple single-slope line louver composed of two types of components: the louver body using ceiling battens and the stringer. By selecting from several types of louver pitches, various expressions can be created, and if a specific pitch is chosen, it is also effective as a pigeon prevention measure, allowing for a sharp ceiling design in areas such as station buildings, platforms, and corridors, where traffic flow should be considered. [Overview] ■ Name: JR Himeji Station / JR Okayama Station ■ Design: JR West Japan Consultants ■ Construction: Oitekikougyou / Obayashi Corporation JV ■ Construction Area: Platform Ceiling MB Louver *For more details, please refer to the PDF document or feel free to contact us.

• Ceiling decoration and design materials
• Other commercial buildings and service facilities

We would like to introduce a case study of a light ceiling constructed by Okuju. The large banquet hall "Le Grand" of the "Hotel Granvia Wakayama," which reopened after renovations in June 2007, features a canvas ceiling of a different type than before. The walls are equipped with a 360° multi-screen, allowing various landscapes and photos to be projected. The canvas ceiling is adorned with flat bar decorations on its surface, creating a smooth and flowing impression. By freely switching the lighting colors with the lighting equipment from Daiko Electric Co., Ltd., it is possible to evoke various atmospheres. Together with the projectors on the walls, these lighting devices produce a fantastical space. 【Overview】 ■ Name: Hotel Granvia Wakayama Large Banquet Hall ■ Location: Wakayama ■ Design: Higashi Design ■ Construction: Oitec Co., Ltd. ■ Construction Area: Large Banquet Hall Color Canvas Ceiling *For more details, please refer to the PDF document or feel free to contact us.

• Fiber wall
• System ceiling
• screen

We would like to introduce a case study of interior construction handled by Okju. Opened in January 2007 in the Ushijima district of JR Nagoya Station, the Nagoya Lucent Tower was planned and constructed as a leading architectural structure for a development plan that aims to shift the main focus from the south side of Nagoya Station to the north side in the future. The office entrance on the first floor is finished in a chic space with a monochrome color scheme. The ceiling features cut panels made of aluminum resin composite, with a glossy black mirror finish that reflects the floor surface. 【Overview】 ■ Name: Nagoya Lucent Tower ■ Design: Nikken Sekkei ■ Construction: Taisei Corporation ■ Construction Area ・Office Entrance: Ceiling with black mirror aluminum resin composite cut panels *For more details, please refer to the PDF document or feel free to contact us.

• Ceiling panels and decorative panels
• Aluminum Mirror
• Pipeline Construction

We would like to introduce a case study of a special interior construction handled by Okuju. The Higashi Cultural Hall at the Higashi Cultural Center has been planned to emphasize musicality while being adaptable for theater performances and lectures through an acoustic variable system. Our company participated from the design stage. In the large hall, we considered the complex ceiling and wall structures necessary for acoustic performance, and we also reinforced them sufficiently to minimize damage during earthquakes, achieving a high-performance and safe acoustic hall. 【Overview】 ■ Name: Beruhiru Kitano-da Sakai City Higashi Cultural Hall ■ Region: Osaka ■ Design: Higashihata Architectural Office ■ Construction: Nishimatsu Construction ■ Construction Area: Large Hall Acoustic Ceiling and Wall *For more details, please refer to the PDF document or feel free to contact us.

• Interior construction

We would like to introduce a case study of exterior construction handled by Okuzhu. The Nihonbashi Mitsukoshi Main Store, New Building, consists of a total of 12 floors, including 2 basement levels and 10 above ground. It inherits the classical atmosphere of the main building while boasting a design and functionality that rivals it. In particular, the decorative unit panels installed on the exterior of the top floor, which were constructed by our company, serve as a significant visual accent. Due to the volume and construction period, we repeatedly examined the construction methods, resulting in large panels that combine vertical aluminum louvers and horizontal aluminum spandrels, assembled during the manufacturing process into units. These were then suspended by a large crane, and installation was carried out from the inside, which helped shorten the construction period and reduce the need for external scaffolding. [Overview] ■ Name: Nihonbashi Mitsukoshi Main Store, New Building ■ Location: Tokyo ■ Design: Shimizu Corporation ■ Construction: Shimizu Corporation JV ■ Construction Area: Exterior aluminum louvers and rooftop crown aluminum panels <unit construction> *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials
• Unit and other construction
• Crane and others

This is the "OS Sealing" reinforcement measure for ceiling materials to prevent damage from falling during a major earthquake. We have newly introduced a grade that can be considered even for "specific ceilings" through a method that improves the ceiling surface load capacity using assist bars. [Updated 2021/07/01] A catalog for the semi-structured ceiling substrate series "OS Sealing SS Type" has been added. - OJ type (Type 19) up to approximately 20 kg/m² - ND type (Type 25) up to approximately 35 kg/m² For details, please check the catalog page. The catalog also includes a data collection related to evaluation tests based on the Ministry of Land, Infrastructure, Transport and Tourism's technical standards explanation.

• Ceiling panels and decorative panels
• Interior construction
• Renovation and repair methods

This is a panel that emphasizes beauty and convenience. "Features" The metal panel, which serves as a decorative material, must be beautiful above all else. Therefore, we focus on the beauty and convenience of the installation. In panel production, we engage in surface treatments such as powder coating, electrolytic coloring, as well as punching and shape processing using various metal sheets, including aluminum and steel.

• Ceiling panels and decorative panels