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Issue 02/2017 Update on DIN EN 1610, DWA-A 127, DWA-A 157

DWA-A 139 – Effects of excavator-mounted compactors on soil and installed pipelines

Joint publication of DIN EN 1610 and DWA Worksheet A 139 The publication of the German version of EN 1610:2015-12, Construction and testing of drains and sewers, necessitated a revision and...

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Issue 02/2017 Lattice girders under cyclic loading

Fatigue of semi-precast slabs

Due to the high efficiency and flexibility of semi-precast slabs with lattice girders compared to in-situ concrete structures, the use of these slab systems increase in building and industrial...

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Issue 02/2017 New aids for the lightweight concrete industry

Software tools for designers – computer-based acoustic verifications

The finalized version of the new DIN 4109 standard was published in July 2016. It comprises four parts, of which the so-called product catalog contains separate information for various construction...

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Issue 02/2017 Reliability of small wastewater treatment plants in Germany

New technical assessment rules in consequence of the ECJ judgment

In October 2014, the European Court of Justice (ECJ) considered “that the Federal Republic of Germany violated the obligations arising from Directive 89/106/EEC”. Large parts of Part B of the...

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Issue 02/2017 Practical application in architecture

Textile-reinforced concrete and structural engineering

Boris Peter of Knippers Helbig Advanced Engineering presents various practical applications of slender concrete structures with textile reinforcement. The appropriate application of carbon-reinforced...

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Issue 02/2017 Questions and answers

Punching shear design in practice

With introduction of Eurocode 2 in Germany (DIN EN 1992-1-1/NA [1] [2]) in 2012, the punching shear design provisions for flat slabs and column bases were revised compared to DIN 1045-1 [3]....

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Issue 02/2017 Technically uncritical but a visual nuisance

Small cracks in TT slabs

A manufacturer of TT slabs used for industrial and commercial halls is storing them outside (at the factory premises) for some weeks. Water runs through fine hairline cracks and causes clearly visible...

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Issue 02/2017 ETA Factory, TU Darmstadt

Precast elements for a building with holistic energy ­efficiency optimization

In the run-up to the Marrakech Climate Change Conference, the German federal government adopted a climate action plan that envisages a 55 % reduction in greenhouse gas emissions by 2030. The CO2...

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Issue 02/2017 Challenges in production and market launch

Drainage systems made of reinforced concrete

Evolution principles of biological systems have become increasingly important as idea pools. The Institute of Applied Construction Research IAB Weimar gGmbH has addressed the task of tapping this...

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Issue 02/2017 Thermally insulating concrete demonstrator for innovative components and energy-efficient concepts

Buildings with networked energy systems

Researchers at the Institute of Construction Materials (IWB) of Stuttgart University developed a concept that enables validation of theoretical approaches to optimizing energy efficiency by...

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