Selection of the expansion device is perfect with this! Easy 3-step selection method.
Select the appropriate product based on the "expansion amount" and the "standard clearance amount" in the drawing! Introducing the method for selecting expansion devices.
Even though they are called expansion devices for bridges, their shapes, materials, and functions are highly diverse. They may all look the same, but it is essential to choose an expansion device that suits the bridge in terms of maintenance and functionality. In Expansion Device Navi, we introduce "The Perfect Method! A Simple 3-Step Guide to Selecting Expansion Devices." For more details, please refer to the related link page. [Contents] ■ Preparations before calculations ■ Let's try calculating! ■ Summary *For more information, please check the related link page or feel free to contact us.
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CRETEC, a company under Crittec Industries, was born from the combination of Create (creation) and Technology. As a comprehensive manufacturer of bridge expansion devices, we continue to develop expansion devices that contribute to the longevity of bridges and environmental protection. Moreover, we do not stop at product manufacturing; by consistently handling everything from research, design, manufacturing, sales, to construction in-house, we can manufacture and install expansion devices that meet the requests of our clients and general contractors, as well as the conditions and environments of the bridges and roads on-site. We also take into account the issues that arise during the installation of expansion devices and the damage conditions of existing devices that are removed, using this information to improve and develop our products. Please feel free to contact us for inquiries about bridge expansion devices, requests for materials, or estimates. ◆ What is a bridge expansion device? It is a component installed in the gap between the bridge abutment and the bridge girder, or between bridge girders. When designing a bridge, it is necessary to create a gap to prevent the bridge girders from colliding due to expansion and contraction caused by temperature changes. The bridge expansion device is required to cover this gap and ensure safe passage for vehicles and pedestrians.
![Examples of Installation of Expansion Devices | Keiji Bypass / Keihan Overpass [Crittec Industries]](https://image.www.ipros.com/public/product/image/1376992/IPROS17487594232614177304.jpg?w=280&h=280)
![[Column] What is an expansion device? Explaining its role in bridges and highways.](https://image.www.ipros.com/public/product/image/a0b/2001472660/IPROS12141437217681408455.png?w=280&h=280)
![Expansion Device Hybrid Joint [Construction Example Kanagawa Prefecture]](https://image.www.ipros.com/public/product/image/612/2000375488/IPROS7100174659779611521.JPG?w=280&h=280)
