Tunnels for storage of hay

Prefabricated structures covered with PVC cover for agriculture, industry and trade.

They are made in a double metal construction in a manner that the lateral outer sides are reinforced, i.e. the tube ø 54 mm/4 mm is pressed into the outer galvanized tube ø 60 mm/2 mm, which gives our tunnels exceptional strength.

They can be quickly assembled at virtually any site; they are free-standing and can be anchored directly to the ground without a need for concrete base.

Our tunnels are suitable for many applications: as a storage hall for agriculture and industry, as a hall for storing agricultural machinery, as a shelter for grazing animals and much more.

Quality 680 g/m2 tarp by the German manufacturer Mehller.
The tunnel is made in a double metal construction, tube by tube, where hot-dip galvanized tubes with phi 60/2mm are pulled onto tube supports with phi 54/4mm. The tubes are of double to cross beam.
Sliding doors – the possibility of installing sliding doors that can be placed on both fronts or according to the customer's needs.
The foundation can be as follows: wedges in the ground, asphalt or securing into concrete.


Quick delivery, fast assembly and long service life of the structure.

The option of expansion in accordance with the growing requirements for storage space.

Arosa Grande is a synonym for high-quality, durable products. Tunnels for storage of hay are made of galvanized steel covered with high quality polyester fabric.

Our tunnels for storage of hay are also resistant to heavy loads from wind and snow.

Tunnels for storage of round hay bales are an excellent way to store hay and straw in a high-quality manner and save up to €150/per head of ruminant within a year.

Hay is a very important forage, and it must be provided in sufficient quantities, while taking care of its quality, especially in the winter period, when the possibility of grazing is reduced.

By properly storing hay in tunnels, we preserve its nutrients, achieve better hay quality, improve its smell and taste, and increase milk production by up to 40%.


What is the price of Arosa Grande structures per square meter?

The price per square meter depends on the type and area. Since each structure is specific and customized to the customer’s preferences, unfortunately, a general price list is not available. The sales team prepares a quote or provides an estimated price within a maximum of 5-10 working days after receiving all the necessary data for the calculation.


What is the estimated time of delivery of the structure?

The time of delivery is determined on case-to-case basis – depending on the current workload of our company and the size of the structure. The usual time of delivery for structures is from 45 to 60 days.

How long is the warranty and lifespan of the structure?

The warranty period for PVC cover is 5 years.

According to our experience, lifespan of the structure is not limited, since the structural components are galvanized and can be used for up to 30 years without any problems.

How to prepare the terrain?

The terrain should be as flat as possible. It is necessary to level the terrain with a maximum drop of up to 2% in width and height. The tunnel can be placed on compacted sand, crushed stone, asphalt or concrete. The required thickness, or load capacity of the soil, depends on the width, load capacity of the structure and the customer’s requirements.

Which colour is recommended for the PVC cover?

In most cases, we recommend a white translucent tarp in the middle of the roof, while the rest of the structure is green, grey or white. This combination allows sufficient sunlight within the structure without additional artificial light, thereby reducing operating costs. Other colour combinations from the manufacturer’s range are also available.

Is it possible to add an advertising sign or logo onto the structure?

We can add an advertisement (at an agreed price) if the customer sends us an advertising sign or logo in a suitable digital format. After we get the logo and the preferred dimensions, we create a draft and send it to the investor for the approval.

Are the structures made of steel or aluminium?

All Arosa Grande structures are made of steel profiles, since steel can withstand greater loads and has better technical properties than aluminium when used for a structure. The steel structure is usually hot-dip galvanized or (at the customer’s request) painted.

Can Arosa Grande structure be connected to an existing building or a facility?

YES, but in this case a special calculation is required, and all data on the existing building must be submitted.

Are Arosa Grande structures manufactured in Croatia?

YES, all Arosa Grande products are manufactured in Croatia using materials of certified EU origin.

Is it possible to subsequently move the structure to another location?

YES. The entire structure is welded during the manufacturing process and bolted on-site. The structure can be disassembled.

What to do if the tarp gets damaged?

We can make a replacement. The client bears the following costs: disassembly, assembly and finishing works.