ESZ type 100

ESZ type 100
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ESZ type 100

Product catalog summary
General Information and Product Description
The ESZ type 100 is an unreinforced elastomeric bearing with a load capacity of up to 14 N/mm², approved by building authority Z-16.32-482. It is designed for static component bearing in structures such as steelworks, wood constructions, and precast concrete. The product is maintenance-free, durable, and exhibits low creep behavior. It is made from EPDM rubber and can be used as a point or strip bearing. The temperature range for application is -25°C to +50°C, with short-term exposure up to +70°C.
Deformation Behaviour
The document details the compression characteristic and bulging behavior of the ESZ type 100. Compression characteristic curves and bulging behavior diagrams are provided for various bearing formats. The deflection is influenced by the compressive stress and the roughness of the contact surfaces, with typical roughness values for concrete and steel provided.
Planning Tools and Design Tables
Design tables are provided for bearing thicknesses of 10 mm, 15 mm, and 20 mm. These tables show the maximum permissible load-bearing capacity and rotational capacity. The tables are intended as guides, and the interaction between compressive stress and rotation is noted as not practically accounted for. The ESZ dimensioning tool is recommended for specific applications.
Installation and Usage
Installation instructions emphasize the need for users to verify the suitability of the product for their specific applications. The document states that technical changes may occur due to new findings or product developments.
Specifications
The ESZ type 100 bearings are designed for use between precast reinforced concrete elements and as in-situ concrete point or strip bearings. They can withstand compressive stress up to 14 N/mm², depending on the format. The bearings have national technical approval Z-16.32-482.
Design Considerations
The document emphasizes that the interaction between compressive stress and rotation is not practically accounted for. Drilling holes in the bearings changes the shape factor, affecting the design basis. The ESZ dimensioning tool is recommended for specific applications.
Load Capacity and Rotation
The load-bearing capacity is limited to 14 N/mm² by the manufacturer, although higher capacities are possible depending on the shape factor. The design must consider the simultaneous occurrence of compressive stress and rotation, and the effects on neighboring components. Shear stresses from vertical compression and torsion are superimposed in the design.
Design Tables
The tables provide maximum permissible values for load-bearing capacity and rotational capacity parallel to side b. They serve as a guide and highlight that boreholes affect the design. The tables also specify dimensions and permissible bores for different bearing types.
Installation Instructions
The document outlines the supply and installation of unreinforced elastomeric bearings, specifying the need for proof of usability. It includes details on bearing thickness, format, boreholes, and quantity requirements.
Mathematical Analysis
The document provides formulas for calculating load-bearing capacity, considering support torsion. It also discusses the reduction in load-bearing capacity due to load action and angular torsion, which must be verified mathematically.
Specifications and Geometric Considerations
The document discusses the mathematical treatment of plane parallelism and unevenness in contact surfaces as planned rotations. Geometric imperfections must be recognized with at least 0.01 rad and added to the bearing torsion calculations. Unevenness is considered with 625/a [%o], where 'a' is the shorter bearing side. For concrete or steel contact surfaces, this value can be halved.
Transverse Tensile Forces
The ESZ type 100 elastomeric bearing is incompressible, leading to transverse expansion under compressive load. This expansion is restricted by neighboring components, causing shear stresses and potentially damaging tensile stresses in adjacent materials. Reinforcement should be placed close to the bearing to mitigate these stresses.
Calculation of Transverse Tensile Forces
The document compares the calculation methods for transverse tensile forces according to old DIN 4141-Part 15 and DIBt approval. The ESZ considers both methods, recommending the less favorable one for reinforcement design. Calculation examples are provided, illustrating the differences in results based on bearing dimensions and load conditions.
Load Capacity Under Rotation
The document provides formulas and examples for calculating load capacity under rotation, considering factors like shear modulus, bearing dimensions, and angular rotation. Tables are included to assist in determining the design value of load-bearing capacity based on shape factors.
Installation Instructions
Guidelines are provided for the installation of ESZ type 100 bearings, emphasizing the importance of clean, debris-free surfaces, proper alignment, and adherence to technical specifications. Specific instructions are given for handling environmental influences, surface imperfections, and the use of steel contact surfaces. The document also advises against stacking storage units and highlights the need for proper joint separation to ensure effective support.
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Catalog excerpts

ESZ type 100-1

ELASTOMER SERVICE ZENTRALE ESZ type 100 Unreinforced elastomeric bearing with building authority approval Z-16.32-482 General information Product description Deformation behaviour Compression characteristic and bulging behaviour Compression characteristic curve Bulging behaviour of the bearing Planning tools Design Design Design Tender Dimensions - Shape factor - Boreholes Load capacity and rotation Rotation - twisting surcharge Transverse tensile forces Calculation example load capacity under rotation Installation instructions tables t=10 mm tables t=15 mm tables t=20 mm texts Our technical information and other printed material is provided to the best of our knowledge and reflects our state of knowledge based on extensive technical application experience at the time of printing. However, the content is not legally binding. We therefore accept no liability for incorrect or omitted advice. The user of our products is obliged to check the suitability and application possibilities for the intended purpose himself. We make technical changes due to new findings or product developments. Our General Terms and Conditions of Sale, which can be found at www.esz-becker.de, apply exclusively.

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ESZ type 100-2

Generel information | Product description ESZ type 100 | for static component bearing Load-bearing capacity up to 14 N/mm? (depending on format) Material > Vulcanisate based on EPDM rubber Proven in practice for decades Can be used asa point or strip bearing Maintenance-free and very durable Very good mechanical-physical characteristics The ESZ type 100 is a compact elastomeric bearing for use as static bearing of structural elements, like steelworks, wood constructions or especially in precast concrete construction. It is used in accordance with the provisions of the general building inspectorate...

 Open the catalog to page 2
ESZ type 100-3

Deformation behaviour | Compression characteristic and bulging behaviour ESZ type 100 | for static component bearing The following pages show pressure compression characteristic curves and the bulging behaviour for selected bearing formats in diagram form. The orientation diagrams make it possible to estimate the deflection as a function of the existing compressive stress. The characteristic curves were determined on reinforced concrete contact surfaces and with centric load application. The diagrams each show the evaluation at the third load on the bearing. In construction practice, the deflection...

 Open the catalog to page 3
ESZ type 100-4

Deformation behaviour | Compression characteristic curves ESZ type 100 | for static component bearing compressive stress 0,p,q [Nimm’] compressive stress The bearing thicknesses 10 mm and 20 mm are each summarised in a diagram, where t = 10 mm is shown in green and t = 20 mm in red. On request, we will be happy to determine the deflection and the bulging of not shown bearing formats according to our technical capabilities.

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ESZ type 100-5

Deformation behaviour | Bulging behaviour ESZ type 100 | for static component bearing compressive stress 0, pq [Nimm?] Bulgingiover short side shown dashes 10,0 The bearing thicknesses 10 mm and 20 mm are each summarised in a diagram, where t = 10 mm is shown in green and t = 20 mm in red. On request, we will be happy to determine the deflection and the bulging of not shown bearing formats according to our technical capabilities.

 Open the catalog to page 5
ESZ type 100-6

Planning tools | Design table general ESZ type 100 | for static component bearing Important note: The table shows the maximum permissible values of the load-bearing capacity with corresponding rotational capacity parallel to side b (a) in accordance with the approval conditions and is only intended as a guide. In our opinion, the interaction between into account and therefore the entire basis for design changes. You can conveniently carry out a specific dimensioning for your application using the ESZ dimensioning tool online. ay Bearing thickness t = 10 mm: Limit dimension of shorter bearing...

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ESZ type 100-7

Planning tools | Design table general ESZ type 100 | for static component bearing Important note: The table shows the maximum corresponding permissible values of the load-bearing capacity with parallelto side approval conditions and is only intended as a guide. In our opinion, the interaction between compressive stress and rotation is not taken into account in a practical manner. As soon as holes are drilled in the bearing, the shape factor changes and therefore the entire basis for design changes. You can conveniently carry out a specific dimensioning for your application using the ESZ dimensioning...

 Open the catalog to page 7
ESZ type 100-8

Planning tools | Design table general ESZ type 100 | for static component bearing Important note: The table shows the maximum permissible values of the load-bearing capacity with corresponding rotational capacity parallel to side b (a) in accordance with the approval conditions and is only intended as a guide. In our opinion, the interaction between into account and therefore the entire basis for design changes. You can conveniently carry out a specific dimensioning for your application using the ESZ dimensioning tool online. ay Bearing thickness t = 15 mm: Limit dimension of shorter bearing...

 Open the catalog to page 8
ESZ type 100-9

Planning tools | Design table general ESZ type 100 | for static component bearing Important note: The table shows the maximum permissible values of the load-bearing capacity with corresponding rotational capacity parallel to side b (a) in accordance with the approval conditions and is only intended as a guide. In our opinion, the interaction between into account and therefore the entire basis for design changes. You can conveniently carry out a specific dimensioning for your application using the ESZ dimensioning tool online. Oy

 Open the catalog to page 9
ESZ type 100-10

Planning tools | Design table general ESZ type 100 | for static component bearing Important note: The table shows the maximum permissible values of the load-bearing capacity with corresponding rotational capacity parallel to side b (a) in accordance with the approval conditions and is only intended as a guide. In our opinion, the interaction between compressive stress and rotation is not taken into account in a practical manner. As soon as holes are drilled in the bearing, the shape factor changes and therefore the entire basis for design changes. You can conveniently carry out a specific dimensioning...

 Open the catalog to page 10
*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.