Flat Jacks

In-situ stress, deformability and resistance feature of masonry can be determined by the flat jack method. The test is performed by making a cut to a uniform depth into the mortar courses and inserting the flat jack or couple of jacks, which are pressured to the desired level.

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Highlights
Specifications
Models
Accessories

Test modes

For stress determination a single flat jack must be used.
For deformability and resistance determination two flat jacks must be used.
The flat jacks have to be pressured and the strain measured using the Analog or Digital mode as follows:

Analog measurement
The following accessories must be used:

58-D0568/A Hydraulic pump with gauge. See accessories.
58-D0567/RS Connecting hose (to connect the two jacks). See accessories.
58-C230/30D Mechanical strain gauge. See accessories.

Digital measurement
The following accessories must be used:

58-D0568 Hydraulic pump, less gauge. See accessories.
58-P0050 Pressure transducer. See accessories
58-D0567/RS Connecting hose (to connect the two jacks). See accessories.
58-D0585 Electronic extensometer (one to three). See accessories.
82-P9008/F: DATALOG 8, 8 channels stand alone multipurpose data logger (see accessories)

Note. In order to fill conveniently the testing cut, use the sets of steel sheets of the same flat jack dimensions.

	Code	Analogical system (quantity needed)		Digital system (quantity needed)
	Code	System with one flat jack	System with two flat jacks	System with one flat jack	System with two flat jacks
Rectangular flat jacks	58-D0567/C2	1	2	1	2
	58-D0567/C11	1 or more	1 or more	1 or more	1 or more
	58-D0567/C20	1 or more	2 or more	1 or more	2 or more
Semi-oval flat jacks	58-D0567/E2	1	2	1	2
	58-D0567/E11	1 or more	1 or more	1 or more	1 or more
	58-D0567/E20	1 or more	2 or more	1 or more	2 or more
Hydraulic pump	58-D0568/A	1	1	1	1
	82-P0050	–	–	1	1
	82-P0349/ELT	–	–	1	1
	58-D0568/4	–	–	1	1
	58-D0567/RS	–	1	–	1
Strain measurement	58-C0230/30D	1	1	–	–
Strain measurement	58-D0585	–	–	1 or more	1 or more
Datalogger	82-P9008/F	–	–	1	1
	82-P9008/ELT	–	–	2	2
	82-P9008/SOF	–	–	1 (optional)	1 (optional)

NOTE: Flat jacks are supplied without Km constant value.

Code

Description

58-D0567/C2

Rectangular flat jack 400x200 mm, 50 bar

58-D0567/C20

Rectangular flat jack 400x200 mm, 50 bar, less valves.

58-D0567/E2

Semioval flat jack 350x260 mm, 50 bar

58-D0567/E20

Semioval flat jack 350x250 mm, 50 bar, less valves.

Code

Description

Accessories

58-D0567/C11

Set of five steel sheets

58-D0567/E11

Set of five steel sheets for semioval flat jacks

82-P9008/ELT

Set of four cables for connecting load cells, pressure transducers, strain gauges, LDT / LVDT / potentiometric type displacement transducers to DATALOG 8 (82-P9008), GEODATALOG 8 ( 30-WF6008) and Automax Pro-M

82-P0050

Pressure transducer 0-50 bar (connecting cable notincluded)

82-P0349/ELT

Connecting cable for pressure transducer. Suitablefor Smart-Line, Sercomp, MCC, Advantest control consoles and Compact-Line compression machines.

58-C0230/30D

Device for the measurement of length variation with digital dial gauge. Measuring base 300 mm. Measuring range 5 mm. Resolution 0.001 mm. Comprehends digital dial gauge with output for PC connection (special cable required). Conforming to BS 1881:206

58-D0567/RS

Connecting flexible hose, 700 mm length for testing two flat jacks.

58-D0568/4

Connecting coupling for pressure transducer

58-D0585

Tubolar electronic extensometer.

82-P9008/F

DATALOG 8, 8 channels multipurpose data logger, battery operated and with rigid carrying case suitable for use on field. 110-230V / 50-60Hz / 1 Ph.

Software

30-WF9000/TA

SOILMASTER T&A, Testing and Acquisition. Sofware for testing and data acquisition of one or more units of the following automatic consolidation and shear, Pc-controlled, group of machines: - ACE, ref. code 26-WF31E20 - SHEARMATIC, ref. code 27-WF21E80 - AUTOSHEAR, ref. code 27-WF21A60 - TORSHEAR, ref. code 27-WF22E202 This code is referred to the activation of a single machine type. In case of two diffrent machine types, the selected quantity shall be selected accordingly.