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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 documentDSM
View the documentBibliography


Manual Block Presses Produced in Europe 4

La Mecanique Regionale
23, rue de la Gare
F-51140 Muizon
Tel. 26 02 95 75
Tlx. 306 022 Imr f


The DSM was developed by De Silvestri, and the patent aquired by C.T.B.I. (Construction Terre Bois International), Muizon, a French firm that used to specialise in earth and wood construction. Based on the CINVA-Ram, the machine is a robust, portable, single-mould press, with a cover that slides sideways and a lever arm, which is operated only on one side of the machine.

A relatively high degree of compaction is achieved by double compression acting simultaneously from the base plate and the cover. A steel angle base frame extension is provided and can be loaded with heavy stones or mounted on a heavy timber base board, to keep the machine in a stable position.

All rigid connections are welded and screw connections are provided for those parts that need to be dismantled for transportation.

Operating the DSM

The machine is operated by two people, with one worker occupied with filling the moulds and removing the ejected bricks and the other person handling the lever arm and cleaning the mould from time to time.

With the lever in vertical position, the cover plate is slid aside to open the mould, which is filled by means of a shovel or bucket. The cover is closed again and the lever pulled down for compression. Again in vertical position, the cover is slid aside and the lever arm pressed downwards to eject the brick.

Technical Details

Size of machine (length x width x height)

115 x 28 x 102 cm (46 x 11 x 41 in)

With lever arm extension: total height

225 cm (89 in)

Weight of machine (including lever arm)

85 kg

Size of crate for shipment

55 x 35 x 95 cm (22 x 14 x 38 in)

Weight of packed machine

110 kg

Standard block size (single mould)

29 x 14.5 x 10.5 cm (11.4 x 5.7 x 4.1 in)

Maximum nominal compaction force

12 tonnes

Nominal compaction pressure

2.8 N/mrn² (405 p.s.i.)

Compression ratio

1.57: 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)


5000 FF

(approx. 860 US$)

valid June 1988


300 FF

(approx. 52 US$)

FF= French Francs