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 ceiling substrate, achieving a semi-structural design with equivalent strength to the structural frame. It prevents the amplification of vibrations on the ceiling surface, as seen in suspended ceilings, 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 accommodate sloped ceilings and other designs. 【Features】 - Aims for integration of the structural frame and ceiling - Prevents amplification of vibrations on the ceiling surface, as seen in suspended ceilings - 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.

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The "MB Louver" is a product developed with the concept of directly designing the ceiling underground material (batten: [M] Metal [B] Bar). It uses color-coated steel plates 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 manufactured in the range of W25 to 150 × H19 to 50, so please inquire about the combinations of W×H. 【Features】 ■ Uses color-coated steel plates ■ 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 must be greater than or equal to H) *For more details, please refer to the PDF document or feel free to contact us.

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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.

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In general, seismic reinforcement of ceilings involves designing them to withstand seismic forces by increasing the strength of the joints in the ceiling framework. However, reinforced ceilings tend to have a large number of components and become heavier. Lite Safe features a simple structure 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 - Shorter construction time and lower cost compared to seismic ceiling specifications, including "specific ceilings" - Partial reuse of existing ceiling frameworks is possible, accommodating renovation work (Note: 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 due to the shape, layout, and additional components of the ceiling.) [Product Catalog Contents] - Component list - Ceiling framework layout examples - Verification results from shaking table experiments - Comparison table of finishing material sound absorption rates If you are interested, please download the PDF or contact us.

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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 a reduction in 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 using 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. With a wall thickness of 125mm (P-100TW is 100mm), plumbing installations can be easily accommodated, eliminating the need for double walls. For more details, please download the PDF or contact us.

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

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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 guidelines 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.

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This OS sealing "OTO-LESS" is a ceiling substrate material that achieves both vibration isolation and seismic 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 isolation system is excellent, with single type at 10-13 Hz and double type at 7-9 Hz. 【Features of OS Sealing HG Type "OTO-LESS"】 ■ Ideal for preventing ceiling collapse in large spaces ■ Compatible with concert halls and cinema complexes ■ Balances vibration isolation and seismic performance in suspended ceilings ■ Can be adapted for specific ceilings *Currently, it is limited to flat ceilings. Future plans include compatibility with sloped ceilings.

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At Okuju, we handle interior and exterior construction work for buildings (walls, ceilings, etc.). We have a track record of working on notable buildings, including government offices, airports, and hotels. You can view many other achievements through the external link. (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.

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"Hakobou" is a flatbed 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.

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"Okuzo" is a wooden pallet made of 100% recyclable PP (polypropylene). It has a very strong safety 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 multiple times instead of being disposable ■ Very strong with a safety 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 (custom 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.

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This catalog is the product catalog of Okuju Co., Ltd., which handles seismic ceiling construction methods, large-scale ceiling construction methods without scaffolding, exterior and interior panels, and more. All buildings exist within 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 Substrates ■ NWD Method (Weldless Steel Substrate Method) ■ Large Space Ceilings (Scaffold-Free Method) ■ Interior and Exterior Metal Panels ■ Canvas Ceilings *For more details, please refer to the PDF materials or feel free to contact us.

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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, enjoy life with a smile, and continue to pursue their dreams. In carrying out our business, OKUJU responds to the expected trust and strives to build credibility by adhering to company and site rules, while also considering 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.

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We would like to introduce the construction case of a station handled by Okju. In the railway industry, pigeon damage to station buildings and platform roofs is a very serious problem. This time, West Japan Railway Company requested a finish using ceiling base materials, and as a result of development considerations, we adopted the "MB Louver," which can prevent 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 for pigeon prevention, allowing for a sharp ceiling design in places such as station buildings, platforms, and corridors, where movement lines should be considered. [Overview] ■ Name: JR Himeji Station / JR Okayama Station ■ Design: JR West Japan Consultants ■ Construction: Oitec Co., Ltd. / Obayashi Corporation JV ■ Construction Area: Platform Ceiling MB Louver *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of the light ceiling handled by Okuju. The large banquet hall "Le Grand" of the "Hotel Granvia Wakayama," which reopened after renovation 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 bars on the surface, creating a flowing and smooth impression. By using lighting equipment from Daiko Electric Co., Ltd., the lighting colors can be freely switched, allowing for a variety of expressions. Together with the projectors on the walls, they produce a fantastical space. [Overview] ■ Name: Hotel Granvia Wakayama Large Banquet Hall ■ Location: Wakayama ■ Design: Higashi Design ■ Construction: Oitec Industrial ■ Construction Area: Large Banquet Hall Color Canvas Ceiling *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of interior construction handled by Okuju. Opened in January 2007 in the Ushijima district of JR Nagoya Station, the Nagoya Lucent Tower was planned and constructed as a leading architectural project 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 black mirror aluminum resin composite cut panels *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of a special interior construction project handled by Okuju. The Higashi Bunka Kaikan Cultural Hall was planned with a focus on musicality, while also being adaptable for theater performances and lectures through the use of variable acoustic devices. Our company participated from the design stage. In the main hall, we considered the complex ceiling and wall structures necessary for acoustic performance, and we implemented sufficient reinforcements to minimize damage during earthquakes, achieving a high-performance and safe acoustic hall. [Overview] ■ Name: Beruhiru Kitano-da Sakai City Higashi Bunka Kaikan Cultural Hall ■ Location: Osaka ■ Design: Higashihata Architectural Office ■ Construction: Nishimatsu Construction ■ Construction Area: Main Hall Acoustic Ceiling and Wall *For more details, please refer to the PDF materials or feel free to contact us.

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We would like to introduce a case study of exterior construction handled by Okju. 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 rival 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, and combined vertical aluminum louvers and horizontal aluminum spandrels into large panels during the manufacturing process. These were then suspended using a large crane, and installation was carried out from the inside, which helped shorten the construction period and reduce 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.

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This is the "OS Sealing" reinforcement measure for ceiling materials to prevent damage from falling during major earthquakes. 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.

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