Flat Bottom Silos

SIMEZA offers a wide range of possibilities in Flat Bottom Silos

FLAT BOTTOM SILOS

SIMEZA corrugated steel sheet Flat Bottom Silos are designed for agricultural, industrial, commercial and strategic applications such as big farms, inland storage facilities, grain terminals, industrial plants fed with cereals such as flour mills, feed mills, rice mills, oil mills, and biofuel facilities. They can be used for both short -and long- term storage of cereals, maize, soya, paddy, oilseeds and any other granulated free flowing materials.

They can be designed according to either ASAE / ANSI American or Euro-Code European norms as per tender specifications or client choice and are manufactured in order to withstand the stress caused by continuous use, extreme temperatures, high winds, heavy snow and seismic loads. They also offer greater resistance to corrosion through thicker galvanization on the steel sheets.

SIMEZA offers a wide range of Flat Base Silos, from 4.6 to 32.10 metres in diameter and a storage capacity per silo from 40 to 25,000 m3 per silo.

DETAILS

ROOF
  1. 30° conical shape.
  2. The roof panels are manufactured with S-350GD - Z600 high tensile steel sheets or can be pre-painted galvanized steel sheet upon request.
  3. The static calculation is performed by the finite element method for:
    • Each individual local wind, snow and seismic loads.
    • Additional heavy duty loads of the catwalks on the roof.
    • Temperature probe loads.
  4. The roof is a self-supporting structure up to 10 m in diameter. Beyond this diameter the roof is equipped with an independent supporting structure.
  5. Roof panels are assembled with galvanized steel bolts and plastic seal washers. Stainless steel bolts can be delivered upon request.
  6. The roof is equipped with:
    • A) d = 500 mm, d = 600 mm or d= 900 mm inlet flange according to the capacity of the conveyor system.
    • B) Air vents allowing for the circulation of the existing air in the silos with the incoming grain.
    • C) Inspection hatch, located at the silo eave which allows for:
      • Visual control of the stored product.
      • Taking samples.
      • Maintenance of the maximum level indicator.
  7. This inspection hatch is equipped with a rest platform which can be reached either by a ladder fixed on the silo wall starting from ground level or by a drop down ladder from the catwalk fixed to a relevant post.
CYLINDER
  1. The wall panels are manufactured with S-350GD - Z600 hot dip Sendzimir galvanized high tensile steel sheets which can be painted upon request.
  2. The static calculation is performed using an in-house developed software for each individual grain density as well as any local wind, snow and seismic loads.
  3. Wall sheet:
    • A) Shape is 104 mm corrugation and depth 12 mm in wall sheet which reduces friction and product residues.
    • B) Assembly by 2 to 4 rows of bolts according to the thickness and acting loads.
  4. Vertical stiffener:
    • A) Standard omega section and junction.
    • B) Reinforced wide omega section and junction.
  5. Anchorage:
    • A) Base plate with double anchor bolts, mechanical or chemical type.
    • B) Spacer plates in order to compensate tolerance of the foundation (optional).
INSPECTION DOORS
  1. Flat Bottom Silos are equipped with a hinged double type lateral access door with a hot dipped galvanized steel frame in the second ring of the wall.
  2. This door is designed according to a safety concept which only allows for opening if the upper level of the stored product is below the door.
  3. This door allows for:
    • A) Easy entrance to the silos.
    • B) Final cleaning of the bottom and aeration floor or channels.
    • C) Control and maintenance of the sweep auger.
  4. Additional lateral access doors can be installed above the angle of repose to suit customer needs.




BOLTING
  1. Roof panels are assembled with galvanized steel bolts and plastic seal washers. Stainless steel bolts can be delivered upon request.
  2. Wall sheets are assembled by high tensile steel 8.8 or 10.9 quality, hot dip galvanized bolts with double steel and plastic seal washers.
  3. Wall sheets are assembled by 2 to 4 rows of bolts, according to the thickness and acting loads.
  4. Base plates are anchored to the concrete foundation by M16, 20, 24 galvanized mechanical or chemical bolts, according to the statics.