The flat bottom grain silos (FP series) is used for the storage of granular cereals with maximum apparent density of 0.85 t/m3.
It is installed on a concrete base in which ventilation channels can be obtained.
In the storage flat bottom grain bins loading is performed through the central dome both by means of pipes and conveyor devices positioned on dedicated gangways.
Silo unloading is done by means of mechanical conveyor devices positioned both in the subterranean tunnels or in the channels obtained in the base. In silos of greater size and height, side unloading channels can be fitted (usually installed on the 10th ring) for partial silo unloading without the need for mechanical devices.



The roof consists of trapezoidal elements made of hot-galvanised sheets with reinforcing bars to withstand the loads caused by snow, conveyor devices and inspection gangways.
The roof is fixed to the cylinder by means of special plates in order to guarantee the circulation of air and to reduce condensation.



The cylinder is made of S350 GD (UNI EN10346) structural steel sheets with Z600 galvanised covering (equivalent to 600g/m2 of zinc) that guarantees long-term resistance to atmospheric agents.

The structure is externally reinforced with HX420LAD (UNI EN10346) structural steel upright columns with omega section anchored to the base using rawl bolts or anchor bolts.

In the case of large diameter silos or silos positioned in very windy zones, reinforcing wind-protection rings are added.

The thickness of the corrugated structural steel panels and uprights is determined according to the silo model and place of installation (also considered as crucial elements are stresses caused by earthquakes, wind and snow). The calculation of the stresses produced by the silage is made according to EN 1991-4:2006 standards (Eurocode 1, part 4).

The sheets and the uprights are assembled using high mechanical resistance bolts, treated with Geomet® process against corrosion. The infiltration of water through the sheet joints is prevented by inserting a sealing bead.



The standard silo is equipped with the following accessories:
• a roof hatch for the control of the stored cereal
• double inspection door usually positioned on the second ring, connected to a micro switch to stop the rotating extractor placed in the internal part of the silo and ensure safe access by maintenance personnel
• an anti-bird circumferential net positioned in between the roof and the cylinder



Supplied at customer request or according to particular plant requirements
• maximum and minimum level gauges
• motorized air extraction fans
• support for temperature control cables
• thermometric plants
• ventilation systems
• rotating extractors for the unloading of the residual cone
• to greater diameter and height silos, side unloading channels can be fitted for partial silo unloading without the aid of mechanical devices
• vertical ladder with guards and stirrups
• roof ladder with side guards and circular platform
• hanging gangways for inspection and conveyor support
• gangway supporting structures
• descents from gangways
• rotating extractors for emptying the residual cone
• at customer request; the roof can be painted in customized colors.



Hereafter are described the management modalities of the website in relation with the users’ personal data of Ophicina s.r.l., company that manages the website and it aims to described in the most detailed way the modalities of treatment.

This information is provided - also in pursuance of Section 13 of Legislative Decree no. 196/2003 -  to any entity having to do with the web-based services that are made available by our website.

Afterwards, is given information about the data, the modalities through which Ophicina s.r.l. manages these data and the ones through which the interested people, the users, can exercise their rights according to the law.

The information provided is also based on the guidelines contained in Recommendation no. 2/2001, which was adopted on 17 May 2001 by the European data protection authorities within the Working Party set up under Article 29 of European Directive 95/46/EC in order to lay down minimum requirements for the collection of personal data to guarantee the loyalty, legitimacy of these practices (in accordance to Art. 6,7,10 and 11 of the 95/46/CE directive).



The Owner of the treatment of personal information acquired by visiting our website and any other data used for the administration of our services is Ophicina Srl, Via I Maggiom 2 – 35010 Curtarolo PD – Italy. 


Those subjects who supplied their personal data have the following rights, according to 
Art. 7 of Legislative Decree no. 196/2013, have the right to obtain confirmation of the existence or non-existence of their personal data, to know their content and origin, verify their correctness or ask for integration, rectification or modification.

The subjects to which are referred the personal data, have the right to ask for the cancellation, transformation in anonymous or block the data treated violin the low, and oppose, for legitimate reasons, to their treatment.

The requests related to Art. 7 of the Legistlative Decree 196/2003 should be addressed to Ophicina srl – Via I maggio, 2 – 35010 Curtarolo PD – Italy or to the email address



The treatments related to the web services of this web site [physically hosted at Aruba S.p.A. (“] are registered in the above mentioned headquarter of the Company Owner of the Treatment and are treated only by employees, co-operators or shareholders of Ophicina s.r.l. responsible for the treatment, or by other users responsible for periodical maintenance procedures.

None of the data communicated through the web site is communicated or diffused.

The personal data given by the users that require services, are used only for the purpose of carrying out the service required and are not transmitted to third parties, except in case the transmission is strictly necessary for law reasons or strictly related to the fulfilment of the requests.

Specific purposes, related to the single treatments are detailed in the offer of the various services given by the Company.

In correspondence with every single offer, in fact, the user will find specific information on the treatment of personal data, according to Art. 13 of the Legislative Decree 196/2003.

This information is in any case inspired by the principles contained in the Company Privacy Policy.


Web navigation data

The information systems and the software procedures used for the functioning of this web site acquire, during the normal utilisation, some users’ personal data and the transmission is implicit in the usage of the communication protocol of Internet.

It is information that is not collected to be associated to identified interested people, but for their implicit nature they can, through elaborations and associations with data owned by third parties, permit the identification of the above mentioned users.

In this category of data are included, the IP addresses or the name of dominion of the computers used by the users who connects into the web site, the address URI (Uniform Resource Identifier) of the resources requested, the time of the request, the method used during the request to the server, the dimension of the file received as a reply, the numeric code with the status given by the reply of the server (successful conclusion, error, etc.) and other parameters linked to the operative system and the information environment of the user.

This data are used only to obtain anonymous statistical information about the usage of the website and to control its correct functioning and they are cancelled immediately after their treatment.

The data can be used to verify the responsibility in case of cyber offences against the web site: except in this case, the data are not conserved for more than seven days.

Data given voluntarily by the user.

The sending of e-mails to the e-mail addresses recorded in this web site leads to the acquisition of the sender’s address, needed to reply to the requests, and of other eventual personal data inserted in the body of the message.

Specific synthetic information will be reported or displayed in the pages of this web site eventually predisposed for particular services on demand.

We invite our users, in their requests or messages, to send personal information or data of third parties which are not necessary, we advice to use fantasy-based names.



The cookies are a textual element downloaded in the hard disk only after authorization. In case of acceptance, the text is downloaded in a light file.

The cookies have the property of simplifying the analysis of the web flow or to monitor the visits of a web site and they allow the Web application to send information to the single users.

No personal data are acquired by the site.

Cookies are not used to transmit personal data, and are not used session or persistent cookies of any type, or system for the traceability of users.



Except for the navigation data, the user is free to transmit the personal data concerned during the contacts with Ophicina s.r.l. in order to ask for information or other communication or to join the services given through the web site.

If they are not transmitted, can lead to the non-receiving of the service required.



Personal data are treated in paper support and/or with automatic devices, for the time needed to pursue the purposes for which they have been collected.

Specific safety measures are respected to avoid loss, illegal or incorrect use of the data or unauthorized access.