Updated on January 5, 2024


Created on August 27, 2015

ISSB Granaries

Upcoming Update

The Interlocking Stabilized Soil Blocks Granary (ISSB Granary) is a solution for ensuring low cost, secure food storage especially for peasant farmers.

Tested By
  • Technology for Tomorrow (T4T) Africa
Content Partners


Product Description

The Interlocking Stabilized Soil Blocks Granary (ISSB Granary) is a solution for ensuring low cost, secure food storage especially for peasant farmers who cannot afford silos. Farmers can store their crops and sell it later on when the prices are higher.

Target SDGs

SDG 2: Zero Hunger

SDG 1: No Poverty

Market Suggested Retail Price


Target Users (Target Impact Group)

Household, Community

Distributors / Implementing Organizations

Technology for Tomorrow (T4T)

Competitive Landscape

Direct competitors include Zero Emission Fridge for Rural Africa (ZEFRA).

Manufacturing/Building Method

ISSB Granaries are individually constructed with the use of a block press to produce Interlocking Stabilized Soil Blocks

Intellectural Property Type

Trade Secret

User Provision Model

The ISSB granary cannot be purchased as a product. The construction process is taught to the farmers so they can build it themselves. Interview with inventor

Distributions to Date Status

There are 30 units constructed to date in Uganda. Interview with inventor

Materials of construction

Comprised of non-organic soil, a small amount of cement and little water.

Grain storage duration

6 months. Interview with representative

Holding Temperature (°C)


Protection from insect entry

Yes. Interview with representative

Storage capacity (kg)

1,000-3,000 Interview with representative

Temperature control

No Interview with representative

Design Specifications

Design specifications: Interview with representative

  • The construction of the ISSB Granary requires Interlocking Stabilised Soil Blocks (ISSB) produced via a block press.
  • Blocks are made on the site thereby reducing transportation costs.

Product Schematics

Technical Support

Trained village level entrepreneur/manufacturer provide support.

Replacement Components

The granaries are constructed locally on site. The only replacement parts are the bricks.


Managed at household levels and can last many years. Interview with representative

Manufacturer Specified Performance Parameters

  • The granaries have demonstrated the capacity to store maize grain free from pests for a period of more than 6 months reducing post harvest waste and ensuring better prices for farmers.
  • In comparison to the traditional granaries, the construction of the ISSB Granary requires minimum skills and uses only environmentally friendly technologies

Vetted Performance Status

The interlocking stabilized soil blocks perform better than clay bricks by increasing the structural stability of built walls, while reducing the amount of cement needed as mortar.


No known hazards.

Complementary Technical Systems

T4T also offers a variety of products such as Makapads, Incinerators, ISSB water tanks, thin shell concrete roofs and more.

Academic Research and References

  1. Innovations for Agricultural Value Chains in Africa Applying Science and Technology to Enhance Cassava, Dairy, and Maize Value Chains– Meridian Institute Value Chains Initiative – Update November 2012 Not peer reviewed

Compliance with regulations


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