CAMBRIDGE INSITU PRESSUREMETER EQUIPMENT SPECIFICATION

HYDRAULIC GROUND FRAME

The Hydraulic Ground Frame is used to insert and retrieve the Pressuremeter. Two hydraulic cylinders are mounted to a hollow-section frame. The cylinders are coupled by a clamp made to fit either Two Inch or EX casing. The frame itself is traversed by two lengths of mild steel tube large enough to take standard scaffold pole. In use the hydraulic ground frame may be either:

1. mounted on the back of a trailer, supported from a cantilevered frame by short lengths of scaffold pole
2. screwed to the ground, again using a pair of scaffold poles for holding down.

All hydraulic connections are made with quick-release couplings.

Physical Dimensions:	Frame Area	314 mm x 375 mm
	Closed Height	1346mm
	Stroke	1067mm
	Weight	160kg
Performance:	Insertion Force	7100Kg or 7 tonnes
	Extraction Force	8700 Kg or 8.6 tonnes
	Maximum Working Pressure	15500 kN m-2 (2250 psi)
Note:	Failing Load of Two Inch Casing	16250 Kg
	Failing Load of EX Casing	10000 Kg

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