Interlocking Bricks empowers the locals to rebuild their own village.

Interlocking Bricks (CSEB)

Many people in rural Nepal dream about living in a brick house. This is very expensive and not feasible in remote villages. Earth Bricks are made locally, reducing cost, and making the dream of a Brick house possible.

Compressed Stabilized Earth Bricks (CSEB)

Competition – Interlocking Brick (CSEB) vs Fired Brick
– Which material is faster? Which is lower cost?
– Watch the video to learn more!

Interlocking Bricks, also called Earth Bricks, is a strong and earthquake resistant building material suitable for villages in Nepal. It is a proven earthquake resistant technology which has been used for decades in earthquake affected areas across India, Pakistan, Iran and many other countries. It enables to build high quality and earthquake resistant structures at low cost.



CSEB machine

Interlocking Brick Machines

Build up Nepal offer machines and training for CSEB production and construction. We have machines of different types and sizes depending on your projects requirements. 

Read more about the different machines >>

Interlocking Brick masonry - ratankot

Intensive Training

We start with a basic training to teach the villagers how to select and mix soil, make bricks, quality check, making foundations and building walls etc. So the villagers learn to rebuild their own village. 

Read more about our training packages >>


What are Interlocking Bricks (CSEB) made of?

CSEB Interlocking bricks - Nepal 2074Interlocking Bricks consists of Soil, Sand and 10% Cement. The mixture is compressed in a machine which results in a compacted brick with high density. The bricks are then stacked and cured for 21 days – the cement sets and bonds with the sand stabilizing the brick. The soil compresses, which adds to the high density and strength. An Interlocking Bricks has the same behavior and mechanical properties as concrete or ordinary fired bricks.

The precise composition of the soil should be around 50% sand, 20% clay, 15% gravel and 15% silt. Normally we don’t get this exact soil in a village, so first the soil is tested and then we add sand and gravel until we have this ratio. This way we can ensure the same bricks strength in any village.


Advantages of CSEB

  • Earthquake resistant.
    The bricks are reinforced by iron rebar inside the wall, both horizontally and vertically, making it highly earthquake resistant.
  • Local material & opportunities
    The bricks are made in the village using only Sand, Soil and Cement. It also creates opportunities for local entrepreneurs.
  • Low-cost.
    Locally made high-quality bricks, saving cost and creating local jobs
  • Eco friendly.
    60% less CO2 emissions compared to fired bricks!

Earth Brick training

How much does it cost to build with Earth Bricks?

Every village is different and the cost therefore varies with local conditions. The cost depends on the following factors:

  • The size and design of the building
  • The accessibility of the site
  • Cost of materials in the local market
  • Cost of labour

Contact us and tell us a bit about your plans to get an estimation for your project!

Earthquake resistance

Interlocking Bricks (CSEB) is an earthquake resistant technique that has been used for many decades. The bricks made by our Heavy Duty machine (24x24x9cm) has a compressive strength of more than 10 MPA, which is better than A-grade bricks. Our smaller Interlocking machine has the same compressive strength as regular kiln fired bricks.

Sixteen schools of CSEB was built in Nepal before the April 2015 earthquake. All of them are undamaged by the earthquake (four are close to the epicenter in Dolhaka). 

When building  we utilize the Interlocking Brick Masonry and reinforce the walls with rebar, both horizontally and vertically, adding to the strength and making the structure earthquake resistant.
Vertical rebar are put in each corner, at doors and windows and evenly spaced throughout the walls. This is then connected with horizontal seismic bands making the whole structure interconnected and earthquake resistant.

CSEB Masonry & construction

Government Approval of CSEB

After the Earthquake in 2015 Interlocking Bricks has become very popular in Nepal. It offers the villagers a safe alternative at low cost.

The government of Nepal has approved the Interlocking Brick technology! There are many government approved designs and we have also approved a wide range of designs for houses and schools. Earthquake affected families rebuilding their homes with Interlocking Bricks will get the government grant if following the guidelines.

Approval Interlocking Bricks & CSEB

Download the full DUDBC volume 2 of model houses in Nepal here: DESIGN-CATALOGUE-VOLUME-II-FINAL.pdf

Contact us for more information on approvals >>

CSEB has also been recognized and approved by several other governments for decades, among them:

  • The government of Gujarat (India) – Post Earthquake reconstruction
  • The government of Iran – Post Earthquake reconstruction
  • The government of Tamil Nadu (India) – Post Tsunami reconstruction
  • The government of Thailand – Post Tsunami reconstruction
  • The government of New Mexico – United states
  • The government of New Zealand

Interlocking Bricks drawings & designs

Reconstruction Nepal - CSEB house - NRA approved 2074 / 2017

We are approving an increasing number of houses, schools, health posts and other designs for Interlocking Bricks construction. Have a look at the one of our most popular designs for 3.5 room house!


Earth Brick school - Nepal

Download our Earth brick school approval and drawings 
(Approved by DUDBC, NRA and Department of Education)