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12.10.2020 (611 Clicks)

Change in Epiroc AB’s Nomination Committee for the Annual General Meeting 2021

Epiroc AB’s Nomination Committee for the Annual General Meeting 2021, which was originally announced on October 5, 2020, has changed.

12.10.2020 (648 Clicks)

Crossrail Project Update – 29th Septempber 2020

Crossrail Ltd plans to bring the Elizabeth line into passenger service as soon as practically possibly in the first half of 2022.

10.10.2020 (860 Clicks)

Bauer Group repositions Strategy in the Area of deep Drilling Technology and expands the Equipment Business in the USA

In recent months, the Bauer Group has been working hard on a strategic realignment in the area of deep drilling. The equipment business in the USA has also been expanded suitably.

09.10.2020 (728 Clicks)

Bentonite Mats allow Fish to migrate

The listed Schwabentorwehr in Freiburg was in disrepair and insurmountable for fish. With the help of bentonite mats, the fish now have a free run again.

The historic Schwabentorwehr (Swabian Gate Weir) on the Dreisam River in Freiburg/Breisgau was a listed building for monument protection. However, the 1873 constructed building was not only in disrepair but was an obstacle to the migration of fish. To improve the site while preserving its historical character, a natural fish ladder was added. A special geosynthetic clay liner (GCL) was installed under the revetment to act as a water barrier and seal the protected structure.

The EU Water Framework Directive stipulates ecological continuity, but the fish could not surmount the old 2.5m high and 42m long Swabian Weir Ramp with its ten steps. While other locations used fish bypasses along the river, the layout of the Swabian Gate Weir in the middle of Freiburg prevented this. There was a public footpath, a cycle path, a federal road on both sides of the site, and residential buildings. Planners had no other choice but to rebuild the structure.

The entire bottom structure was constructed in two sections, due to the lack of space. The dam was laid approx. 2.50m off-centre and then converted to the finished revetment for the second construction phase.

It was important for the designers to seal the building downwards to reduce surface water losses (exfiltration from surface water or infiltration into groundwater). These losses were especially critical at low water levels in the river Dreisam and in groundwater. Essential requirements for the sealing material were a very high puncture resistance and having the ability to be installed underwater.

Based on the specific requirements, the designers opted for Bentofix BZ 13-B (bentonite mats) from Naue. Bentofix geosynthetic clay liners (GCLs) are needle-punched, reinforced composites with excellent and immediate sealing efficiency, versatile in use. They combine two durable geotextile outer layers and a uniform core of high-swelling powder sodium bentonite clay. The Bentofix BZ 13-B type encapsulates an additional sand layer. Both, the bentonite and the sand layer, are fully needled and erosion-proof. The result is a uniform, multi-directional, shear-resistant hydraulic barrier with self-sealing and re-healing characteristics. The additionally integrated sand layer in Bentofix BZ 13-B enables the underwater installation due to its weight. It also ensures that the bentonite mat is very robust and has an extreme puncture resistance.

Bentofix was installed between the existing subsoil and the revetment. The bentonite mats were laid directly on the subgrade with an overlap of 1m in the flow direction. Due to the firmly bonded nonwoven layers, no additional protection measurements were necessary. The Bentofix GTD was then covered with a 10cm gravel-sand layer, followed by a 30cm gravel-scrap mixture and the revetment.

A 115m long and approx. 19.5 to 23.8m wide near-natural sole structure was erected as a river-wide drainage channel with a basin structure. The revetment of the new weir consists of hydraulic armourstones in setstone and transom construction. The actual channel is 98m long and has 21 basins with a height difference of 15cm each.

Now, fish and invertebrates can overcome the height difference of 3.3m upstream. The new fish ladder is particularly crucial for the salmon resettlement programme.

Source: Naue GmbH & Co. KG

                     

08.10.2020 (600 Clicks)

NRG Argentina selects Superior Conveyors for new Frac Sand Plant

Superior Industries, Inc., a global manufacturer and supplier of bulk material processing and handling systems, is honored to be selected as the material handling supplier for NRG Argentina’s (NRG) new frac sand plant in Río Negro, Argentina.

08.10.2020 (610 Clicks)

51st virtual International Symposium on Hydraulic Engineering Aachen (vIWASA)

Due to the corona pandemic the Symposium on “Adaption of Water Management to Climate Change: Challenges, Opportunities and Goals” will take place digitally on January 7, 2021.

08.10.2020 (550 Clicks)

Three Decades of Environmental Technology in the Bauer Group

Over the past 30 years, what is now the Bauer Umwelt business division of Bauer Resources GmbH has developed from a twoperson operation into a leading company for environmental technology with 177 employees. This successful trajectory began by tackling a challenge in specialist foundation engineering: how to handle contaminated areas on construction sites.

08.10.2020 (750 Clicks)

Strabag Consortium awarded Contract for D55 Motorway in Czech Republic

• Construction of 8.4 km section from Babice to Staré Město
• Contract value around € 105.5 million (STRABAG share: 50 %)
• Project schedule: 42 months

08.10.2020 (715 Clicks)

QRC welcomes Progress on CopperString 2.0 to power North West Minerals Province Jobs

The Queensland Resources Council has welcomed the Queensland Government’s announcement of an implementation agreement for the proposed CopperString 2.0 high voltage 1,100 km transmission line to the North West Minerals Province.

06.10.2020 (649 Clicks)

Pieridae engages EPCC contractor Bechtel

Pieridae Energy Limited announced that it has signed a services agreement with respected global engineering firm Bechtel related to Pieridae’s 2-Train Goldboro LNG Facility. Some of the key deliverables in the services agreement are:

• Initiating a detailed review of the scope and design of the Goldboro LNG Facility and developing a comprehensive engineering, procurement, construction and commissioning (“EPCC”) execution plan by March 31, 2021;
• Delivering a final lump sum, turnkey EPCC contract price proposal by May 31, 2021; and
• Conducting a meaningful engagement with the Nova Scotia Mi’kmaq First Nations including their participation in the construction of a large-scale work camp at the LNG site.