1679 Square Meters Chicken House and Egg Storage in Bulgaria
Project info:
Project location: Omurtag, Bulgaria
Project size: 23×73×7.15m Chicken House + 12×30×6m Egg Storage
Project details: Portal Steel Frame + 6m Eave Height
Background
On November 18, 2025, a construction contractor from Omurtag, Bulgaria, contacted us through a friend's introduction. This client ran a construction company but wanted to venture into a new field: starting a chicken farm. He needed to build two buildings: a large chicken house and an attached egg storage room.
Design
The client's requirements were very clear. The internal net dimensions of the chicken house were required to be 22 × 72 × 5 meters. The egg storage room was required to be 12 × 30 meters, with the same height as the chicken house. Given the large amount of corrosive gases such as ammonia produced inside the chicken house, the client specifically requested that all steel components be hot-dip galvanized. Initially, he also wanted all the enclosure panels installed inside the steel frame for better protection of the steel structure itself.
The following day, the client personally visited Dorian's factory. After touring the production line and conducting an on-site inspection of the product quality, they expressed great satisfaction with everything. During the subsequent design review, our engineers pointed out a potential problem: if the enclosure panels were installed inside the steel frame, the working space for construction workers installing frame connectors, support components, and bolts on-site would become extremely narrow, significantly increasing construction difficulty. The client fully understood this concern and agreed to adjust the design—installing the enclosure panels on the outside of the steel frame. This adjustment greatly simplified the on-site installation process.
On November 26th, the client officially approved the revised design and signed the contract. Dorian then began preparing the foundation and main building construction drawings.
Design Challenges and Solutions
Challenge 1: Conflict Between Net Dimensions and Equipment Requirements
The client initially provided net building dimensions of 22×72×5m. However, after coordinating with the chicken coop equipment supplier, Dorian discovered a problem: if the space occupied by steel beams and wall panels was deducted, the actual usable net space inside the building would be too narrow to meet the installation requirements of chicken farming equipment—including feeding systems, ventilation fans, and egg collection equipment. All equipment requires a certain amount of clearance for operation and maintenance to function properly.
Solution: This problem could not be solved independently by our efforts alone. Therefore, on January 13, 2026, the client, Dorian's engineers, and the equipment supplier held a tripartite joint meeting. The equipment supplier presented a detailed equipment layout plan at the meeting and clearly listed the specific space requirements for each piece of equipment. Based on this detailed data, we redesigned the building structure—adjusting parameters such as the building's width, span, and height—ultimately ensuring a perfect fit and integration between the building structure and the internal equipment. The final building dimensions were determined to be 23×73×7.15 meters, with an eaves height of 6 meters, providing ample space to accommodate all equipment.
Challenge 2: Hot-dip galvanizing requirements for all components. The chicken coop had a high concentration of corrosive gases, and the client required all steel structural components (including the main frame, purlins, tie rods, and connectors) to be hot-dip galvanized. This presented two technological challenges: first, enclosed cross-section components (such as round tubular tie rods) were prone to bursting during galvanizing due to the expansion of internal air due to heat; second, it was necessary to ensure that the zinc layer thickness on all surfaces met the standards, with no exposed spots.
Solution: After prefabrication, Dorian's factory conducted a systematic pre-treatment for hot-dip galvanizing on all components. First, Dorian completed all prefabrication and trial assembly work; then, each galvanized component was thoroughly cleaned. For the tie rod components, Dorian selected 89 mm diameter round steel pipes and pre-drilled special "drainage holes" in the pipe body. During hot-dip galvanizing, molten zinc flows into the pipe cavity through these guide holes, achieving complete coverage of the inner wall of the steel pipe. Dorian rigorously tests each finished component to ensure that its zinc layer thickness is at least 85 micrometers, with an average thickness of 120 micrometers—a standard far exceeding industry specifications, ensuring the building's service life in harsh environments.
Installation Guidance and Service Guarantee:
The project has been successfully shipped, and the customer is preparing for on-site foundation construction. This modern steel structure building, which integrates chicken houses and egg storage, will bring long-term and stable returns to customers' livestock farming sideline businesses.
Upon arrival of the goods, Dorian will dispatch an experienced engineer to Omurtag to provide full installation guidance. We also provide a complete set of building approval drawings and a detailed installation manual. 5% of the total contract amount ($7,000) is set as an installation retention deposit, payable upon completion and customer acceptance—this arrangement fully protects the customer's rights and reflects our confidence in our design and product quality.
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