After listening to the comments of Mathyoo, and Moiterei_1984 i have made some changes to my Construction yard.
I have made a separate base for the Construction yard with a sand pile and lots of mudd on the ground.
I have also added some rust to the pipes and beams.
I hope you all like my new Construction better :)
And here are some pics on how the Construction yard looks with some models on.
Let the zombie apocalypse begin.....