Flat-bottom silo cleaning and floor systems
Flat floors, discharge points, aeration equipment and reclaim systems can all retain material after normal unloading.
Silo types, stored materials and deposits
Silo cleaning library
A technical reference covering silo construction, stored products, retained deposits and the factors that affect cleaning and return to use.
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41 reference records · 9 detailed guides
Silo types and cleaning considerations
Silo geometry and construction affect access, discharge arrangements, retained material and the surfaces that need cleaning. Flat-bottom, hopper, tower and bunker silos describe different storage arrangements, while fabric and GRP describe construction materials.
Hopper silo cleaning and flow behaviour
Cone geometry, outlet condition, internal finish and the stored material all influence cleaning and deposit removal in hopper-bottom silos.
Tower silo cleaning and storage arrangements
Tower silos vary widely in contents, wall construction and unloading equipment, so the cleaning method depends on the specific installation.
Bunker silo cleaning and effluent control
Horizontal silage stores involve retaining walls, floors, drainage channels and effluent collection rather than the enclosed geometry of an upright silo.
A bund is secondary containment around a liquid tank. A bunker silo is horizontal bulk storage. For a liquid-tank bund, see bunded tank cleaning.
Stored materials and retained deposits
The same silo may need a different clean when the product, deposit condition or next use changes. Food powders can bring hygiene, allergen and combustible-dust concerns. Mineral powders may harden after moisture exposure, while agricultural products can deteriorate in storage.
- Stored material: exact product or grade, including ingredients and any allergens that affect the cleaning standard.
- Deposits: location, extent, condition and any known change in flow or moisture.
- Equipment: silo construction, outlet or reclaim equipment and connected conveying systems.
- Return to use: next product, hygiene requirements and the operator’s acceptance criteria.
Reference sources for this library
These sources support the technical points in the library. Manufacturer information applies to the equipment or application it describes, and regulatory guidance applies only within its stated scope and jurisdiction.
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Silo types and construction
Bunker silo cleaning and effluent control
Bunker silo cleaning needs to account for retained silage, floor and wall condition, drainage and effluent containment.
Read the guideReference checklist and technical facts
- Type
- Horizontal bunker / clamp
- Different asset
- A liquid-tank bund is secondary containment
- Include
- Floor, wall joints, channels and effluent route
- Store dimensions and empty/filled status
- Floor and wall condition
- Effluent collection route
- Next-fill date and acceptance checks
Penn State Extension: horizontal silo safety
Get a quoteSilo types and construction
Flat-bottom silo cleaning and floor systems
Flat floors, reclaim equipment and discharge points can retain material after unloading and need to be considered before refill.
Read the guideReference checklist and technical facts
- Type
- Flat-bottom / flat-floor silo
- Identify
- Reclaim equipment and floor construction
- Separate checks
- Material removal, machinery condition and readiness for refill
- Floor and discharge drawing
- Installed reclaim equipment
- Stored product and deposit condition
- Next product and release checks
Silo types and construction
Hopper silo cleaning and flow behaviour
Hopper geometry, product flow and outlet condition determine where residue remains and how the hopper can be cleaned before return to use.
Read the guideReference checklist and technical facts
- Type
- Hopper-bottom / cone-bottom silo
- Identify
- Hopper surface, outlet and feeder
- Key distinction
- Geometry does not establish the flow pattern
- Hopper and outlet drawing
- Feeder and valve details
- Product and moisture observations
- Required hand-back condition
Silo types and construction
Tower silo cleaning and storage arrangements
Tower silos vary in construction, stored material and unloading arrangement, so cleaning depends on the installation rather than the name alone.
Read the guideReference checklist and technical facts
- Type
- Upright / tower silo
- First question
- Dry bulk product or ensiled forage?
- Access
- Confirm existing platforms, openings and discharge equipment
- Product history
- Height, diameter and wall construction
- Loading, discharge and access drawings
- Inspection and return-to-use criteria
Penn State Extension: silage storage terminology
Get a quoteSilo types and construction
Bolted and coated-steel silo cleaning
Bolted steel silos use modular panels with joints and a specified surface finish. The cleaning method must protect that finish and account for deposits around joints, seals and any damaged coating.
Permastore: coated and stainless steel tanks and silosThe link above opens the source used for this reference entry.
Reference checklist and technical facts
- Construction
- Modular steel panels with a specified finish.
- Planning
- Include joints, seals and any reported coating damage in the cleaning assessment.
- Steel and coating system used on the internal surface.
- Condition of panel joints, seals and any previous coating repairs.
- Stored product and location of retained deposits.
Permastore: coated and stainless steel tanks and silos
Get a quoteSilo types and construction
Delivery and loading silo cleaning
Delivery silos are arranged for controlled outloading to vehicles or another collection point. Cleaning can involve the vessel, discharge equipment and deposits around the loading arrangement.
Symaga: delivery silosThe link above opens the source used for this reference entry.
Reference checklist and technical facts
- Arrangement
- Elevated storage and outloading over a collection point.
- Delivery-silo geometry and outloading arrangement.
- Discharge equipment and access around the loading area.
- Stored product and deposits around the cone, outlet and loading system.
Silo types and construction
Fabric and flexible silo cleaning
Fabric silos use a flexible technical-fabric storage body supported by a structure. Cleaning suitability depends on the fabric specification, its condition, the stored product and the manufacturer’s instructions.
Agriflex: fabric silosThe link above opens the source used for this reference entry.
Reference checklist and technical facts
- Construction
- Flexible technical fabric supported by a rigid structure.
- Planning
- Confirm that the fabric body is serviceable and check the manufacturer’s maintenance limits.
- Fabric specification and manufacturer maintenance instructions.
- Condition of the fabric body, including any damage or replacement requirement.
- Previous contents, known residue and required condition before return to use.
Silo types and construction
Feed bin and feed silo cleaning
Feed bins and silos hold dry feed ingredients or prepared feed and discharge through dedicated delivery equipment. Residue in the vessel and outlet, together with the requirements for the next feed, sets the cleaning standard.
EB Equipment: feed-storage silosThe link above opens the source used for this reference entry.
Reference checklist and technical facts
- Application
- Dry feed storage with a defined delivery arrangement.
- Feed type, formulation and previous contents.
- Residue in the silo, outlet and feed-delivery equipment.
- Changeover or hygiene standard required before the next feed.
EB Equipment: feed-storage silos
Get a quoteSilo types and construction
GRP and fibreglass silo cleaning
GRP means glass-reinforced plastic, also called fibreglass. The cleaning method must suit the internal GRP surface, its condition and any limits in the vessel manufacturer’s instructions.
EB Equipment: GRP silosThe link above opens the source used for this reference entry.
Reference checklist and technical facts
- Construction
- Glass-reinforced plastic, also called fibreglass.
- Method selection
- Cleaning must suit the vessel instructions and the condition of the GRP surface.
- Manufacturer, GRP construction and internal surface specification.
- Known cracks, repairs, coating damage or maintenance restrictions.
- Stored product, residue condition and required finish before reuse.
Silo types and construction
Live-bottom silo cleaning
SPIRAC live-bottom silos use multiple low-speed screws across the silo floor to discharge difficult bulk solids. Any cleaning work must account for the powered screws, their drives and connected transfer equipment.
SPIRAC: silos and silo systemsThe link above opens the source used for this reference entry.
Reference checklist and technical facts
- Equipment
- The live-bottom discharge arrangement uses multiple moving screws.
- Planning
- Identify the screw drives and connected transfer equipment involved in the work.
- Live-bottom screw arrangement, drives and connected transfer equipment.
- Isolation points for the screws and associated machinery.
- Stored material and deposits around the discharge system.
SPIRAC: silos and silo systems
Get a quotePublished by Silo Cleaning. Sources checked 12 September 2026. Editorial policy.
Please contact us if you identify a factual error in this library.
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