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PVC-U Piezometers

Made of non-plasticised polyvinylchloride, they are suited to a variety of uses where there is no need for particular resistance to chemical agents. The piezometers are available with standard microcracking of 0.5 mm with the option of varying the filter light in the presence of a different granulometric curve (slot 0.25 ÷ 1.5 mm)

Ø ext (mm)Ø ext (inch)Ø int (mm)thickness (mm)Ø sleeve (mm)weight (kg/m)
21,11/2"15,92,6260,2
26,53/4"21,32,6320,3
33,31"26,73,3410,5
42,01"1/434,63,7490,7
48,01"1/240,04,0560,8
60,02"51,64,2671,1
75,02"1/266,04,5-1,5
89,03"79,05,0-2,0
114,04"103,45,3-2,7

The dimensions shown in the table refer to standard piezometric tubes with threaded M/M couplings with sleeve. For diameters in excess of 2″, piezometers are available that can be coupled by means of M/F threading (gas or trapezoidal) with smooth or cup junction.
The bars have a standard length of 3 and 6 metres.

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Applications

Tube and filter systems indicated for: groundwater measurements, environmental monitoring, contaminated site surveys and aquifer mapping.

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HDPE Piezometers

PE100 high-density polyethylene piezometers are suitable for use in contaminated soils where the material should be able to resist corrosion (e.g. brackish water) and the action of pollutants (e.g. hydrocarbons, chlorides, fluorides).
The junction between the bars is made by M/F threading obtained in the tube thickness.

DNPN 10 SDR 17 sp (mm) th (mm)PN 16 SDR 11 sp (mm) th (mm)PN 25 SDR 7,4 sp (mm) th (mm)PN 10 Ø (mm)PN 16 Ø (mm)PN 25 Ø (mm)PN 10 weight (Kg/m)PN 16 weight (Kg/m)PN 25 weight (Kg/m)
633,85,88,655,451,445,80,670,991,40
754,56,810,36661,454,40,951,381,99
905,48,212,379,273,665,41,362,002,85
1106,61015,196,89079,82,042,984,28
1257,411,417,1110,2102,290,82,603,875,51

The series of thicknesses envisaged by the reference standard allow for the pipes to be sized according to the loads to which they are subjected (EN 12201-2: 2013).
The cracking lights (slots) available from 0.5 mm to 1.5 mm can be customised to satisfy the client’s specific request.

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Applications

Tube and filter systems indicated for: groundwater measurements, environmental monitoring, contaminated site surveys and aquifer mapping.

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Stainless steel piezometers

The stainless steel piezometric tubes W.N. 1.4301 (AISI 304) or 1.4401 (AISI 316) are indicated in the geotechnical sector in which, based on the characteristics of the ground, requires high quality materials with particular resistance characteristics to corrosion and resistance mechanics.

The coupling between the bars can be done by:
– M/M threading with sleeve for diameters up to 4″
– M/F junctions with trapezoidal or triangular 55° conical threading

The table shows the performances of the piezometers based on the opening surface (OA%) and the withdrawable flow rate (for each metre of filter assuming a water input speed of 3 cm/s).

Ø ext. (inch)Ø ext. (mm)thickness (mm)Ø int.slot 0,7 mm OA=4,5% Q[L/s per m]slot 1,0 mm OA=4,8% Q[L/s per m]slot 1,5 mm OA=5,6% Q[L/s per m]
1"33,7327,70,140,150,18
1"1/442,4336,40,180,190,22
1"1/248,3342,30,200,220,25
2"60,3354,30,260,270,32
2"1/276,1370,10,320,340,40
3"88,9382,90,380,400,47
4"114,33108,30,480,520,60

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Applications

Tube and filter systems indicated for: groundwater measurements, environmental monitoring, contaminated site surveys and aquifer mapping.

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ABS and Aluminium inclinometer pipes

These are used as a guiding tube for the inclinometer probe in the detection and monitoring of landslides, dams, unstable slopes and containment structures. They are used in all cases where it is essential to detect a lateral displacement caused by cuts or ground instability.

The 3 metre long bars, are coupled by means of sleeves fixed with rivets and are provided with head and bottom plugs.
The ABS inclinometer tubes are particularly suitable for sites with a strong presence of corrosive agents and in soils with a possible presence of stray currents.

Aluminium (series)6080
outer diameter + OD guides (mm)5887
inner diameter + ID guides (mm)4979
interaxis guides (mm)5483
thickness (mm)22
overall dimensions of the sleeve (mm)62,692
ABS (series)607085
outer diameter + OD guides (mm)607085
inner diameter + ID guides (mm)506072,5
interaxis guides (mm)536385,5
thickness (mm)3,53,54
overall dimensions of the sleeve (mm)677791,5

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Accessories for geotechnics

Monitoring

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Casagrande Cells

The Casagrande cell piezometer is generally installed in medium and high permeability soils (> 10-5 cm / s) for the control of stratum tendency. The porous cell consists of a polyethylene (PE) filtering element to allow water to permeate and ascend the connected pipeline, to take groundwater measurements such as elevation detection by level probe or multi-parameter probe. An auxiliary tube is inserted to allow for washing and purging.

Length 250mm – Ø55 mm

G1/2 attachments

Accessory: eccentric reduction G1”/G1”1/4 x G1/2

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Accessories for geotechnics

Monitoring

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Nesty Probe

Nesty probes are filters to extract gases found in the soil.

The probe can be produced either in PVC or AISI 304 stainless steel with the possibility of obtaining the crack best suited to the needs (0.5 ÷ 1.5 mm).

½ “, ¾”, 1 “, 1” ¼, 1 “½, 2” diameters are available, fitted with a special link for the junction with PA66 polyamide pipe and ball valve.

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Accessories for geotechnics

Sampling

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Water sampling pumps

The immersed whale pumps are easy to use as they can be connected to the battery of any vehicle (12 V DC) via cables with crocodile clips.

They are available in two versions:

  1. Super Purger (predominance 18 m, flow 11.1 L / min, cable length 20 m, diameter 43 mm)
  2.  Mega Purger (head 27 m, flow 10.1 L / min, cable length 30 m, diameter 43 mm)

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Accessories for geotechnics

Sampling

GTSWater sampling pumps
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Bailer single use samplers

Manufactured in PEAD or transparent PVC, they are suitable for sampling by sinking and are available in diameters 11 – 19 – 38 mm, length 900 mm and have a capacity ranging from 250 mL to 1 L.

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Accessories for geotechnics

Sampling

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Sampling punches for cores

Made of AISI 304 stainless steel and suitable for SHELBY/OSTERBERG heads, they are available in diameters Ø 88.9 and Ø 101 mm (standard lengths 600 – 700 – 1000 mm).

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Accessories for geotechnics

Sampling

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Cataloguing boxes

Manufactured in polyethylene, they can hold up to 5 cores Ø 101 mm and length 1 m. Equipped with a PVC layer separator.

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Accessories for geotechnics

Sampling

GTSCataloguing boxes
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