Grain is one of the most demanding commodities to store. Design errors in a hangar lead to condensation, mould and crop losses. In Kazakhstan, where the agricultural sector represents a significant share of the economy, a properly designed grain storage hangar pays for itself in 2–4 seasons.
14–16%
max grain moisture
at the time of loading into storage
+5...+15°C
optimal temperature
inside a grain store
from 25,000 ₸/t
commercial storage cost
per tonne per season
from 40 million ₸
1,000-tonne hangar
own construction
What Matters When Designing a Grain Hangar
Ventilation
Active aeration is a mandatory requirement. Without it, grain "burns" — it heats up and deteriorates in quality. Ventilation systems are built into the floor as perforated channels or sub-floor ducts.
Flooring
Concrete floor with moisture insulation. Wooden flooring is completely unsuitable — it absorbs moisture and provides a breeding ground for fungus. Concrete thickness — minimum 150 mm, reinforced.
Walls and Roof
For long-term storage — insulated (sandwich panels). Condensation on the inner roof surface drips onto the grain and causes localised wetting. For short-term storage (up to 3 months) an uninsulated metal hangar with forced ventilation is acceptable.
Gates
Wide gates (5–6 m) for grain-loading vehicles. Height — at least 4–5 m.
Regulatory Framework in Kazakhstan
Grain storage design is governed by:
- SN RK 3.02-43-2013 "Grain Warehouses";
- Sanitary standards for grain storage;
- Fire safety requirements for agricultural storage facilities.
Grain stores with a capacity above 500 tonnes require full design documentation and a construction permit.
Grain Hangar Formats
| Format | Capacity | Features |
|---|---|---|
| Flat-bottom hangar | up to 3,000 t | classic option, easy to build |
| Conical-floor hangar | from 500 t | gravity unloading |
| Grain bin (silo) | from 200 t | compact, higher cost |
For most farms, the optimal choice is a flat-bottom hangar 18–24 m wide with a length matched to requirements.
Approximate Construction Costs
| Capacity | Hangar Area | Approximate Budget |
|---|---|---|
| 300–500 t | 350–500 m² | from 20–30 million ₸ |
| 1,000–1,500 t | 1,000–1,200 m² | from 55–75 million ₸ |
| 3,000+ t | from 2,500 m² | from 160 million ₸ |
Prices include the foundation, frame, sandwich panels and ventilation channels.
We will calculate a grain hangar for your required capacity
Tell us your planned storage volume — we will prepare a project proposal with a budget breakdown.
