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RESTON®STU

RESTON®STU

RESTON®STU

Product catalog summary
Seismic Protection Overview
The document discusses the RESTON®STU Shock Transmission Unit (STU) by mageba, designed for seismic protection of structures. These units are dynamic devices that allow free movement under normal conditions but lock during seismic events to transmit forces to connected elements, thus preserving structural integrity.

Characteristics & Dimensions
RESTON®STU units consist of a piston, piston rod, and cylinder pipe. They operate on the principle of viscous fluid resistance, locking during rapid movements and allowing minor resistance during slow movements. They do not dissipate energy but control load distribution and minimize structural movement during sudden impacts. The document provides a table of standard dimensions for various STU models, detailing axial force, length, diameter, and stroke.

Properties & Benefits
The units operate differently at low and high velocities, transmitting full axial force at high speeds while allowing free movement at low speeds. Made from high-quality materials like S355 steel and 42CrMo4 steel, they are designed to resist corrosion and temperature variations, ensuring a service life of 50 years. Benefits include increased structural safety, tailored solutions, and applicability for both new and retrofitted structures.

Quality & Support
mageba ensures high product quality through a certified process-oriented system and offers full-scale testing based on European and AASHTO standards. Installation supervision is recommended to ensure proper setup and guarantee. The devices are maintenance-free but should be inspected every 5 years. mageba provides comprehensive support and documentation for installation and maintenance.

Conclusion
RESTON®STU devices are a reliable solution for seismic protection, offering durability, safety, and adaptability to various structural needs. mageba's extensive experience and quality assurance make these devices a trusted choice for engineers and builders worldwide.
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Catalog excerpts

RESTON®STU-1

Seismic protection mageba seismic protection devices – for reliable preservation of structures Flendruz Bridge, Switzerland RESTON®STU Shock Transmission Unit prevention, protection, control

 Open the catalog to page 1
RESTON®STU-2

Seismic protection Characteristics & dimensions Principle there is no reduction of the load impacts. However, by locking up in certain extraordinary events, the RESTON®STU devices temporarily change the static system of a structure, e.g. from simply supported to continuously supported elements. mageba RESTON®STU shock transmission units consist of a piston, a piston rod and a cylinder pipe. They are temporary (dynamic) connecting devices allowing free movements during service conditions while locking up during a shock loading from an earthquake or due to traffic/train braking. In such case they...

 Open the catalog to page 2
RESTON®STU-3

Seismic protection Properties & benefits Corrosion protection The behaviour of RESTON®STU shock transmission units is completely different for the following two operational situations: mageba proposes standard corrosion protection systems according to EN ISO 12944, with corrosivity category depending on location, environmental conditions and the required degree of protection. • At low velocities, free movement with no load transmission • At high velocity, the full axial design force is transmitted while any movement is locked and restrained Materials The following materials are used by mageba...

 Open the catalog to page 3
RESTON®STU-4

Seismic protection Quality & support Quality Customer support For five decades, mageba products have proven their worth in thousands of structures under the most demanding conditions. In addition to the product properties, the extensive experience of mageba’s well-qualified manufacturing and installation staff also contributes to the high quality and durability of the products. mageba offers supervision of installation for its products all over the world. The supervision is highly recommended to ensure proper installation of the devices and to take benefit of the full mageba guarantee. Our product...

 Open the catalog to page 4

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.