Topographic accessories

Reference products codes: GC00, GCTR, DN00, GMP, GBM Topographic monitoring requires accessories such as bolts, prisms, and targets. Reference bolts are threaded to accept optical targets. Rotary targets can be also mounted on a simple threaded bar or attached to an inexpensive “L” shaped bracket. The GMP104 equivalent to the Leica mini-prism provides good survey […]

Multipoint settlement gauges

Reference products codes: DSM, D422M, D422S, D422R, D422F The multipoint settlement systems consist of a number of hydraulic settlement gauge connected by tubing to a reference tank located on higher, stable ground. The settlement gauge is a pressure transducer with vibrating wire or capacitive technology, mounted on a plate with a protective cover.Depending on the […]

H-Level – Liquid Level Systems

Reference products codes: H-LEV The H-Level is the automatic liquid level system for accurate long-term monitoring of differential settlements in buildings, tunnels, and other civil structures. It consists of a series of H-Level gauges that are hydraulically connected to a reference tank positioned in a stable location. Each H-Level gauge includes a high-resolution pressure sensor […]

Solid Resistive Load Cells for Pile Testing

Reference products codes: L2CT, L2CX Specially designed for pile testing, they consists of a cylinder body made by heat-treated steel instrumented with 4 strain-gauges. Customised range available to suite any request. L2CT load cells are tested for long-term stability under heavy operating conditions. Electric cable can connect load cells to a suitable remote datalogging system […]

Electro-hydraulic Load Cells for Steel Linings and Struts

Reference products codes: L2CE Electro-hydraulic load cells consist of stainless steel pad with a pressure transducer.  The piston pad is realised by two plates welded together around their periphery and spaced apart by a narrow cavity saturated under high vacuum with de-aired oil to assure maximum rigidity; so that load is transmitted into a pressure […]

Hydraulic Anchor Load Cells

Reference products codes: L2M0, L2E0 Hydraulic anchor load cells are used to monitor loads in tiebacks, rock bolts and retaining walls. They consist of two ring-shaped stainless steel plates welded together around their circumference. The anular space between the plates is filled under vacuum by deaired oil. The load is directly measured by a Bourdon […]

Electric Anchor Load Cells

Reference products codes: L200, ELC420 Electrical resistance anchor load cell consists of a ring-shaped stainless steel body which incorporates from 8 to 16 electrical resistance strain gauges in full bridge configuration. Typical applications include performance testing of anchor systems in tunneling or deep excavations. The cell design minimizes the sensitivity to the eccentric load. Anchor […]

Earth Pressure Cells

Reference products codes: L141, L143 Earth pressure cells (or total pressure cells) are used to monitor total pressure in earthfill dams and embankments or placed at the interface between the structure and the wall of excavation. Earth pressure cells are constructed from two stainless steel plates, welded together around their pheriphery. The anular space between these […]

Hydraulic Pressure Cells

Reference products codes: L111, PK45H, P252A, TUNY Hydraulic pressure cells are designed to measure stress in mass concrete or placed at the interface between the structure and the wall of excavation. The pressure pad consists of two steel plates welded together around their periphery and spaced apart by a narrow cavity saturated under vacuum with […]

Flat Jack Testing Accessories

Reference products codes: L100 The flat jack consists of a steel pressure pad filled with deaired oil equipped with two steel tubes, one for pump connection and one for linking another pad or to mount a pressure tranducer. Pressure pad are available in different dimensions; customized pad shape and dimensions achievable under request. The manual […]

Urban Tunnelling: Hakata station of the Fukuoka city subway – Japan

For the tunnel excavation of the Hakata station of the Fukuoka city subway in Japan partial excavation was carried out. A road with heavy traffic and different structures , as subground car park, gas pipelines, important sewers, are situated above the tunnel construction. Taking into account constraints as shallow overburden and unconsolidated ground above the […]

Bözberg Railway Tunnel anchor load monitoring retaining wall

The new Bözberg railway tunnel will serve as a 4-meter corridor that will be added to the Gotthard route in order to promote transalpine freight transport from road to rail. The largest sub-project within this plan is the replacement of the existing Bözberg tunnel in Switzerland with a new twin-track tunnel. Sisgeo has supplied since […]