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close this bookSoil Block Presses (GTZ, 1988, 38 p.)
View the document(introduction...)
View the documentAcknowledgements
View the documentTechnology
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View the documentGéo 50
View the documentDSM
View the documentBibliography

Géo 50

Manual Block Presses Produced in Europe 3

ALTECH - Societe Alpine
de Technologies Nouvelles
Rue des Cordeliers
F-05200 Embrun
Tel. 92 43 21 90
Tlx. 420219


The Geo 50 is produced in collaboration with Ste SOUEN, Centre de Terre, Lavalette, F-31590 Verfeil, where Joseph Colzani, ARCHECO, developed the machine in 1984.

The portable block press is designed to produce soil blocks with the lever action only on one side. The downward movement of the lever pushes the vertical stroke piston upwards and simultaneously pulls the mould cover downward by means of a cam, thus achieving double compaction and consequently higher density blocks.

It is advantageous to mount the machine on a strong wooden base board or two strong beams to provide rigid support.

Operating the Geo 50

Generally, two people are sufficient to operate the machine, and three or four people are required for excavation, transportation and preparation of the soil.

The mould is conveniently filled from the side opposite the lever arm. The cover, which is hooked to the lever arm, is pushed to vertical position and unhooked, allowing the lever arm to be pulled back to horizontal position, by which the block is fully compacted. Back to vertical position, the lever arm is hooked to the cover, which is pulled back, ejecting the compressed block, which is removed for drying.


Technical Details

Size of machine (length x width x height)

40 x 35 x 100 cm ( 16 x 14 x 40 in)

With lever arm extension: total length

250 cm (99 in)

Weight of machine (including lever arm)

125 kg

Size of crate for shipment

50 x 45 x 110 cm (20 x 18 x 44 in)

Weight of packed machine

160 kg

Standard block size (single mould)

29.5 x 14 x 9 cm (11.6 x 5.5 x 3.5 in)

Maximum nominal compaction force

8 tonnes

Nominal compaction pressure

2 N/mm² (290 p.s.i.)

Compression ratio

1.75: 1

Energy input/transmission


No. of blocks per cycle/output rate

1 / 90 -110 blocks per hour

Labour force required (incl. excavation and mixing)

5 - 7 men

Price (ex works)

Geo 50

6100 FF

(approx. 1050 US$)

valid June 1988


on request

FF= French Francs