Thank you both 
The grain elevator was modelled in part after this:
Although the main characteristics (silos, tower, pipes connecting the silos) are there, as you can see it is not exactly a complete copy of the image i used. But i guess there should exist more similar grain elevators to the one i made
For the silos, in particular, i modelled them after another pic, which i cannot find now, which had a little extra detail in the bottom.

The grain elevator was modelled in part after this:

Although the main characteristics (silos, tower, pipes connecting the silos) are there, as you can see it is not exactly a complete copy of the image i used. But i guess there should exist more similar grain elevators to the one i made

For the silos, in particular, i modelled them after another pic, which i cannot find now, which had a little extra detail in the bottom.