Hopper Bottom Silos

Hopper bottom silos are more suitable for short-term storage.

They are used mainly for grains such as rice or pellets.

Hopper silos are mainly used for short term storage, in areas where it is difficult to have an optimal foundation.

They are also recommended for grains such as rice or pellets (more fragile), in which the product can easily break, thus avoiding the use of sweepers for discharge. Instead, the discharge is done by gravity through a 45º or 60º hopper.


Main features of the hopper bottom silo

  • Hopper bottom silo made of high strength steel S350GD, fully galvanized Z-600 (600 gr/m2) with vertical and externally bolted reinforcements.
  • Completely bolted joints with 8.8 bichromated bolts and nuts with rubber washers.
  • Metallic structure support and hot galvanized reinforcements Z-600 (600 gr/m2).
  • Preformed butyl mastic (BSD) to seal connections panels and to join the cylinder and cone together.
  • Fixing plates with chemical ground anchors.
  • Ventilation shafts and ladder on roof.
  • Inspection door on the roof and on the second ring with access platform and ladder.


  • Maximum level detector – pendular
  • Minimum level detector – membrane.
  • Top support for catwalk.
  • Lateral support for catwalk: (T2 – Two bodies).
  • Thermometry System.
  • Access ladder to the roof with protection according to UNE-EN-ISO 14122 and rest platform every 6 meters.
  • Discharge hopper.
  • Manual and motorized slice.
  • Single and double catwalk.
  • Ventilation kit inside the silo with connection.
  • Special reinforced designs for seisms, snow and wind.
  • Ventilation