News and Articles
Apr 10, 2008
Article
Development of a new high performance PE pressure pipe system, from design phase to reality
Since the introduction of the first PE pipe more than 40 years ago, PE raw material producers and pipe producers have continuously joined their efforts to propose better and better pressure pipe solutions to the end-users and installers. The development of modern installation techniques, in particular trenchless technologies, has created a need for improved systems, with enhanced insensitivity to installation conditions. Rehau and Borealis, have gathered their respective long expertise and knowledge in PE pipes and raw materials to develop a new pipe system with outstanding crack resistance to meet new market expectations and needs. This paper will describe the different steps the two companies have passed together, from analysis of the market needs to the first actual projects of the newly created RAUPROTECTII solution.
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Apr 10, 2008
News
Hydro offers sustainable stormwater treatment solutions at IFAT 2008 (Stand 103 Hall A1)
THE benefits of Hydro International’s unique advanced hydrodynamic vortex separation technology will be showcased through its portfolio of sustainable stormwater treatment and drainage solutions at IFAT 2008 (5-9 May).
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Apr 08, 2008
News
Water Environment Federation releases new Chinese version of "World Water & Environmental Engineering"
The Water Environment Federation (WEF), a U.S. based not-for-profit technical and educational organization, has released a new Chinese version of its international publication, World Water & Environmental Engineering. Targeting the Asian water and wastewater markets, this new magazine is an expansion of the European version and will be published in conjunction with WEF Publishing UK Ltd., London and Shanghai ZM International Exhibition Co. Ltd.
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Apr 07, 2008
News
Amsterdam Schiphol Airport 90 years old and in top shape
Schiphol is constantly being expanded and drained. A particular feature of the area is that it is 3 meters below sea level. With the skill of the Dutch in draining polders, this land was wrung from the sea around 1850. Draining the land today means different challenges need to be met: de-icing liquids used in the Winter are separated from the rainwater and drained off separately for environmental protection reasons.
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Apr 04, 2008
News
HOBAS bridging old and new Zagreb
The approximately 1 million inhabitants of Croatia's capital Zagreb can count themselves lucky to have high quality drinking water that is drawn from wells around the city area. It is hence the city council's utmost concern to retain the quality and to therefore preserve the river Sava and the groundwater reservoirs with a new Zagreb Wastewater Treatment Plant (ZWWTP).
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Apr 02, 2008
Article
Risks during the pull back operation of horizontal directional drilling
The success of the pull back operation of horizontal directional drilling can be increased by performance of a risk analysis. The problems, which might occur during a pull back operation, are varying from high pulling forces to uncompleted pull back operations and from slight coating damages to deteriorated pipelines. The nature of these problems is related to the pipeline-soil interaction. The pipeline soil interaction can be defined as the combined behaviour of the pipeline and the surrounding soil in terms of stresses and deformations. Consideration of all aspects of the combined pipeline soil behaviour formed the bases of a global risk analysis of the pull back operation. Besides high normal forces on the bore hole wall in case of small bending radii or irregular shaped bore holes, occurrence of obstacles and bore hole instability are identified as major risks during the pull back operation. The risk analysis resulted in a series of risk reducing measures for future horizontal directional drillings.
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Mar 31, 2008
News
Landmark onsite assembly of Robbins double shield completed
Onsite assembly of a massive 10.0 m (32.8 ft) Double Shield TBM has been completed in Andhra Pradesh, India. A ceremony was held on March 18, 2008 to mark the official launch of the Robbins machine - the first of two TBMs to bore a 43.5 km (27.0 mi) long water tunnel for the Alimineti Madhava Reddy (AMR) Project.
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Mar 28, 2008
News
IFAT 2008 − A growing market in the rehabilitation of drains and sewers
Cleaning and renovating drains and sewers is an up-and-coming business in Germany and throughout Europe. Manufacturers and service companies are rising to the technological challenge and tapping into the economic potential in this market. At the environmental trade fair IFAT, which takes place from 5 to 9 May 2008 in Munich, market leaders and niche suppliers will be informing visitors about all the latest techniques, products and services in drains and sewers. IFAT is also a chance to review and compare the conditions and the requirements on the various international markets.
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Mar 27, 2008
News
PowerMon Ionometer - applicable in municipal and industrial sewage treatment plants
The legally prescribed limit value in the outlet of municipal and industrial sewage treatment plants is reliable monitored by the Bran+Luebbe PowerMon Ionometer with high precision.
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Mar 25, 2008
News
Premiere at IFAT 2008: The Research & Education Area
At IFAT, which takes place from 5 to 9 May 2008 in Munich, a new section is being set up, called the ‘Research & Education Area’. Here universities and research institutes will be presenting their ongoing projects and findings on around 270 square metres of exhibition space in Hall B6.
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Mar 25, 2008
News
Severn Trent Services showcase new water treatment solutions at IFAT 08
Severn Trent Services will highlight its latest technological innovations in water treatment at IFAT 2008
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Mar 19, 2008
News
CargoCap will change lives - Prof. Hänsch considers the 5th transport alternative a product of the future
CargoCap is an idea that will change all our lives! - That's how the German book author Prof. Theodor W. Hänsch sees the idea of transporting goods with CargoCap through underground pipelines according to the principle of pneumatic delivery. This is why he has included the project that was initiated and developed by Prof. Dr.-Ing. Dietrich Stein into his recently published book "100 products of the future: groundbreaking ideas that will change our lives".
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Mar 19, 2008
News
GRUNDODRILL 15N reliability by design and experience
GRUNDODRILL 15N, incorporates the powerful combination of the TT Group's latest technology and worldwide user experience. Precision engineered, GRUNDODRILL 15N 's rigid construction (weight 12500kg) easily handles its impressive 7000 Nm of torque and 167 Kn (16.7 tons) of thrust and pullback. During the drilling process the rig can be quickly configured using the touch screen control and provide all functions with the required power, to suit the toughest ground types, up to the maximum values shown.
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Mar 18, 2008
Article
UK wastewater plant responds to rising demand and rising standards
The resort town of Gillingham in south west England has responded to growing population plus increased treatment standards by installing four of Nordic Water’s Dynasand moving sand bed filters. The installation in its present configuration is designed to meet anticipated needs till 2013 – but with additional media and designed capacity for a potential fifth unit, it is expected to meet Gillingham’s needs until the year 2020.
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Mar 17, 2008
News
HOBAS is reaching for the stars - 2007 was the best year in HOBAS History
The best present for the 50th anniversary of HOBAS Pipe Systems probably came from HOBAS itself: A record result of the Group's annual accounts since the company's founding in 1957. HOBAS, the leading supplier of CC-GRP (Centrifugally Cast Glassfiber Reinforced Plastics) Pipe Systems, advanced production technology and know-how, achieved a consolidated turnover of approximately 200 Million Euros and grew by 11% within one year only. From 2006, the Group boosted pre tax profits by 26%. These are company results of which Ms. Strohmaier, who was appointed Managing Director of the Group in summer 2007, is very proud: "In spite of the tense general economic situation last year HOBAS peaked in its performance and closed the business year far over the set target."
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Mar 13, 2008
News
Robbins TBM mobilizes at Ceneri
On February 15 a cutterhead turning ceremony marked the official startup of adit tunneling on the Ceneri Base Tunnel. The 9.7 m (31.8 ft) Robbins machine will excavate a 2.4 km (1.5 mi) long access tunnel in Sigirino, Switzerland for the Consorzio Monte Ceneri (CMC) JV-a consortium of CSC, Lugano, Frutiger SA, Thun, Rothpletz, Lienhard + Cie, and Aarau.
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Mar 10, 2008
Article
Increasing demand for pipeline rehabilitation in Central Eastern European countries
The purpose of the paper was to present development prospects of trenchless technologies and pipeline rehabilitation market in the Central and Eastern European countries. The basis for the paper was infrastructure ownership structure in the light of economic and political changes and financing procedures connected with the access to the EU funds.The paper is partly dedicated to preparations and running large municipal projects along with related opportunities and threats. Several recent trenchless reference projects will be presented in the paper to illustrate the project scale better; in particular those involving comprehensive renovation of water, gas and sewer pipeline.
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Mar 07, 2008
News
Aldo Zilli backs the 'clear choice' for London
Celebrity chef Aldo Zilli has lent his support for the London On Tap campaign, banning the sale of bottled water in his restaurants.
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Mar 04, 2008
Article
The French recommendations for the structural design of large sewer linings
The French National project of research and experimentation named RERAU (Rehabilitation of Urban Network Sewers) has published in 2004 its recommendations for the structural design of large sewer linings after a five years period of preparation and discussion. The design method works for circular or non circular linings and takes into account the exact geometry of the lining (curve radius and imperfections) and the interaction with the existing host. The concept based on an approximate analytical solution, supports simple formula and diagram usage for stress, deformation and stability analyses. The method gives formulas for the buckling pressure of non circular linings (egg-shaped linings). Geometrical imperfections (ovality, gap, local intrusion, flat spot) are treated individually using reduction factors for the buckling pressure and amplification factors for the stresses (bending moment and axial force) and the deflection.
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Mar 03, 2008
News
Monumental Microtunnelling in Verona, Italy
The problem of flooded buildings located below street level after heavy rainfalls is finally solved thanks to the construction of a new storm water sewer. It was promoted by Acque Veronesi, the water management department in charge of 77 municipalities of Veneto.
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Feb 28, 2008
News
UNITRACC at IFAT 2008
Web-based information-, teaching and working platform for the field of sewer and pipeline construction to exhibit at IFAT 2008
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Feb 26, 2008
Article
Appropriate application of controlled turbine bypass valves
During recent years, operation requirements for controlled turbine bypass valves and bottom discharge valves have increased continuously. 10 or 15 years ago these valves might have operated „not neatly” under certain opening degrees, i.e., there were cavitation phenomena, vibrations or pulsating discharge of the water. Nowadays, this is not the state of the art any more. These valves must perform neat flow discharge across the whole range of opening, from „Open“ to „Closed“ position and vice versa, without any vibrations nor cavitation.
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Feb 25, 2008
News
Tom Hayes and Isabel Tardif elected to serve on the NASTT Board of Directors
Following an election that was held by letter ballot in November 2007, Tom Hayes and Isabel Tardif were elected to serve on the North American Society for Trenchless Technology (NASTT) Board of Directors. The NASTT Board of Directors is the governing body of the Society. It sets the policy, establishes the budget and verifies that the Society is fulfilling its mission.
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Feb 20, 2008
News
Ditch Witch 250R/T locating system released
The Ditch Witch® organization, the industry leader in the design and manufacture of underground construction equipment, announces the release of its new 250R/T locating system. The company says the 250R/T is one of the most efficient and cost-effective methods for locating and avoiding buried telephone, CATV, power, gas, and water lines. Consisting of a 250T transmitter and 250R receiver, this simple, lightweight system features intuitive controls, an easy-to-read display, and depth estimation up to 15 feet (4.6 m).
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Feb 18, 2008
News
Robbins TBM digs deep for down under sewer project
A new Robbins Double Shield TBM will tunnel underneath the northern suburbs of Melbourne, Australia, calling for innovative changes to the tunneling operations and extensive site monitoring.
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