Avshar Hadimi Dam – Turkey
Avshar Hadimi Dam, Avshar Region, Turkey
FAQ#111 – Why I cannot read correctly my 4-20mA current loop gauge?
It could be a problem connected to the power supply given by the readout or logger. When the power supply is in the current loop (2-wire gauge) it is necessary to consider the effect of voltage drop across the shunt resistor on the voltage applied to the gauge. For example, suppose a 4-20mA gauge requires […]
Egnatia Odos Road – Athens, Greece
Egnatia Motorway was designed to the specifications of the Trans-European road network. Across Epirus and Northern Greece from Igoumenitsa to Evros, Egnatia Motorway is one of the largest road construction projects in Europe, 670 kilometres long and 24.5 metres wide.The realisation of this motorway requires the construction of: 50 road interchanges; 350 entrance / exit […]
FAQ#030 – Why do the NATM pressure cells have repressurizing tubes?
NATM pressure cells are normally used to measure tangential and radial stresses in concrete tunnel lining. They are embedded in concrete and after curing the cell shall be repressurized to mantain the intimate contact between the pessure pad and the surrounding material.
FAQ#022 – Why NATM pressure cells have repressurizing tubes?
NATM pressure cells are normally used to measure tangential and radial stresses in concrete tunnel lining. They are embedded in concrete and after curing the cell shall be repressurized to mantain the intimate contact between the pessure pad and the surrounding material.
FAQ#021 – Is the repressurizing hand pump for NATM pressure cells filled by de-aired oil, ready to use? Which kind of oil is used for this purpose?
Yes it is. The pump is filled at factory under vacuum with de-aired oil. For normal use within concrete the oil inside the pump is enough to repressurize 50 pcs. of NATM pressure cells. The oil we use is Edwards Ultra-grade 19 type for vacuum-pump use.
FAQ#020 – How to obtain better results from pressure cells installed in earthfill?
The measurement of total pressure in geomechanics, even if is one of the most interesting parameters for the designer, is generally considered not reliable. Case histories report more nonsuccessful examples than for all the other types of measurements. Theoretical studies made by many researches have highlighted the critical parameters in the design and manufacturing of […]
Cantanghel idraulic tunnel, access tunnel and main tunnels – Italy
Project Name: Martignano Tunnel Purpose of the project: Variant of S.S.47 “Valsugana” Project location: Italy – Trento Client: TOTO Costruzioni Spa – Italy Contractor: Provincia di Trento – Italy Tunnel Type: Double highway tunnel Excavation method: TBM machine Total length: About 4.200 meter Tunnel diameter: 12 meter End of construction: December 2006
Madrid Subway M 30 – Spain
The Madrid M30 motorway, the inner ring road of the city, is at the centre of a major urban renewal project. At the current time the M30 is a ‘barrier’ to movement in the urban areas it runs through. Despite its necessity as part of the road infrastructure of Madrid it causes much pollution to […]
Brescia Metro Italy
In a northern Italian city named Brescia there is one of the most innovative and complex project of the country: a public railway line of about 14 Km longer, that pass through the historical centre of the city. The progress in opening of all the sites and building obtained nowadays show a general situation of […]
Mujib Dam, Jordan
Project Name: Mujib Dam Purpose of the project: Irrigation and Water Supply Project location: Madaba Region Hashemite: Kingdom of Jordan Client: Jordan Valley Authority (JVA) Contractor:Aegek-Hydrogradnja J.V. Consultant:Lahamayer Dam Type: RCC with earthfill abutments (clay core) Height above foundation: 62 m Crest level: 199 m a.s.l. Crest length: 750 m Capacity of the Reservoir: 35 […]
Meijaran Dam, I.R. of Iran
Project Name: Meijaran Da Project location: IRAN- RAMSAR Client: Mazandaran & Golestan Regional Water Authority Contractor:Cotra Co. Dam Type: Homogeneous(clay) Height above foundation: 32 (m) Crest level (above sea level): 153 (m) Crest length: 622 (m) Capacity of the Reservoir: 40,000,000 m3 End of construction: June 2004