Cinva RAM

The advance of CEB into the construction industry has been driven by manufacturers of the mechanical presses, a small group of eco-friendly contractors and by cultural acceptance of the medium in areas where it is seen as superior to adobe. In the United States, most general contractors building with CEB are in the Southwestern states: New Mexico, Colorado, Arizona, California, and to a lesser extent in Texas. However, manufacturers of the mechanical presses enjoy their heaviest sales overseas. Mexico and Third World countries have been attractive markets for the presses for years.

The advantages of CEB are in the wait time for material, the elimination of shipping cost, the low moisture content, and the uniformity of the block thereby minimizing, if not eliminating the use of mortar and decreasing both the labor and materials costs.

Ceta Ram drawings
for download in the blue box
on the right side (1.5 mb)

* CEB can be pressed from humid earth. Because it is not wet, the drying time is much shorter. Some soil conditions permit the blocks to go straight from the press onto the wall. A single mechanical press can produce from 800 to over 5,000 blocks per day, enough to build a 1,200 square feet (110 m2) house in one day.

* Shipping cost: Suitable soils are often available at or near the construction site. Adobe and CEB are of similar weight, but distance from a source supply gives CEB an advantage. Also, CEB can be made available in places where adobe manufacturing operations are non-existent.

* Uniformity: CEB can be manufactured to a predictable size and has true flat sides and 90-degree angle edges. This makes design and costing easier. This also provides the contractor the option of making the exteriors look like conventional stucco houses.

CEB had very limited use prior to the 1980s. It was known in the 1950s in South America, where the Cinva Ram was developed by Raul Ramirez in the Inter-American Housing Center (CINVA) in Bogota, Colombia. The Cinva Ram is a lever-action, manual press that makes one block at a time.

cinva ram


17 page book.


Ceta Ram drawings
for download in the blue box
on the right side (1.5 mb)


The advantages of compressed earth blocks are multiple:

· Small-scale production of compressed earth blocks is more efficient than small-scale production of adobe bricks.

· Compressed earth blocks are denser and stronger than adobe bricks.

· In some tests, they have proved marginally superior to traditional adobe bricks in their capacity to transfer moisture and heat.

· Compressed earth blocks can be made without having to add water or organic materials in order to facilitate cohesion.

· Because they contain less moisture, they can be laid immediately into walls without curing, and they shrink considerably less than adobe bricks.

· Compressed earth blocks are standardized in size, which makes handling and wall construction simpler and easier.


Most contemporary earth building projects use stabilized wall blocks. Stabilization makes blocks virtually impervious to weathering and erosion. It is achieved by adding small amounts of either concrete or asphalt to the earth used to make the blocks. Partially weather-resistant, semi-stabilized blocks can be produced by adding lime.



  1. My name is Bright and I live Zambia. I have always wanted to build a Cinva press but can not get the plans. Building materials in this part of the world is extremely expensive. If I had my own Cinva press, it would make my life and my community easier since we can build better homes and other farm structures. I am therefore appealing for your assistance. May God bless you. Thank you.


    Bright Ngulube

    • Olá Bright Ngulube
      Sou do Brasil

      Gostaria muito de poder lhe ajudar.
      Primeiro quero saber se já consegiu a CINVA
      se não conseguiu eu lhe mandarei os planao bem
      detalhado de como você mesmo construie a sua propia CINVA

  2. I am keenly interested in do-it-yourself housing for the poor. Can you supply me detailed plants for the fabrication of CINVARAM machine. I will be happy to pay if any cost is involved. I will appreciate an English language version.

    Look forward to hearing from you.

    Many Thanks

    3 Feb 2010

  3. Notify me of new posts via email.

    3 Feb 2010

  4. hola muchos saludos desde venezuela, estoy interesado en tener la posibilidad de construir la prensa cinva ram, le agradeceria enormemente me enviaran una guia para su construccion

  5. I am also looking for plans to build a CEB press. If you have any available, or know where I can a blueprint, please let me know.

  6. Please send us the Drwings & Construction details for CINVA RAM

  7. sono un admiratore cinva press ,prego una schema construire una maqina …gracias

  8. hola saludos me interesa construir una cinva ram ya que es muy costoso el material normal y la manode obra y en mi comunidad hay barro soy de baja california Mexico .. gracias de antemano

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

%d bloggers like this: