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Case Study: The 7,000 sqm Spanish Greenhouse Project in Miandoab

Constructing greenhouses in cold, mountainous regions like Miandoab comes with its own unique challenges and nuances. The 7,000-square-meter project executed by Gol Afrooz in this area is a prime example of structural engineering tailored to the climate, combined with effective cost management. Below, we examine why this project is considered a successful investment.

Miandoab’s Climate and Smart Structural Choice

Miandoab is known for its cold winters, frost, and occasional heavy snowfall. In such a climate, the choice of structure determines the life or death of your capital.

  • The Challenge: Heavy snow loads and the need for maximum heat retention in winter.

  • The Gol Afrooz Solution: We utilized a Spanish structure with a Gothic design.

  • Technical Advantage: Due to its pointed shape, the Gothic arch prevents snow from accumulating on the roof and creating excess pressure.

  • Humidity Management: In this roof type, condensation droplets caused by internal humidity slide down the sides into the gutters instead of dripping onto the plants (which causes fungal diseases).

Why 7,000 Square Meters – Not More, Not Less?

You might ask, does size affect profitability? The answer is a definite yes. In modern agriculture, there is a concept called "economy of scale." Establishing a 7,000-meter greenhouse (nearly one hectare) is the "golden spot" for investment.

  • Equipment Cost Justification: The cost of buying boilers, smart irrigation systems, and automation isn't drastically different for 5,000 vs. 7,000 meters. However, at 7,000 meters, this cost is amortized over a larger production volume.

  • Production Stability: At this size, the volume of crops like cucumbers or tomatoes reaches a level where you can sign sustainable contracts with exporters. Major buyers look for producers who can offer a continuous and significant supply.

Structural Engineering Features

At Gol Afrooz, we believe a greenhouse should be a legacy for the next generation. We used strict standards for this project:

  • Full Hot-Dip Galvanized Skeleton: All columns, arches, and gutters have been dipped in molten zinc baths (hot-dip galvanization). This means absolute resistance against high greenhouse humidity and zero rust for many years.

  • Portable (Bolt & Nut) System: Unlike welded structures that suffer from rust and weakness at weld points, this structure is entirely assembled with bolts and nuts. This feature increases strength, speeds up installation, and allows for future expansion or relocation.

  • Wind Resistance: Given the regional winds of West Azerbaijan, the static calculations of the structure were performed precisely based on the area's wind speed.

Suitable for All Cultivation Types, From Soil to Hydroponic

The high height of Gol Afrooz’s Spanish structures (usually taller than standard Iranian structures) provides a larger volume of air for the plants. This means:

  • Less temperature fluctuation between day and night (less stress for the plant).

  • Ample space for vertical plant growth (like greenhouse cucumbers and tomatoes).

  • Easy installation of cooling/heating systems and energy-saving screens.

The Bottom Line

The Miandoab project demonstrates Gol Afrooz’s ability to execute projects from A to Z; where engineering knowledge combines with the experience of executing 95 hectares annually to reduce your investment risk to zero.