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How does a tower silo differ from a horizontal silo?
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Farm building
Grain elevator and silos on a small farm.
In agriculture, both tower and horizontal silos serve as airtight structures designed to store and protect silage—partially fermented fodder—by keeping it in a succulent, edible condition for livestock.12
The primary differences between these structures include their shape, construction, and orientation:
- Tower Silos: These are aboveground, cylindrical structures. They typically measure 20 to 30 feet in diameter and reach heights of 50 to 65 feet. They are often constructed from steel, masonry, concrete, or wood. Some specialized versions feature fused-glass or porcelain inner surfaces to ensure an airtight environment for high dry-matter silage, known as haylage.21
- Horizontal Silos: These are parallel-piped structures that can be built either as trenches cut into the ground or as bunkers constructed aboveground. Their floors are typically made of concrete or natural earth, and their walls may consist of timber, plywood, concrete, or sheet steel.2
While tower silos rely on vertical height for storage capacity, horizontal silos are often used for larger-scale storage and are sealed using materials like plastic, heavy paper, or earth to prevent spoilage.12