3D-models related to construction sites/ factories

I know of this thread 3D models/textures and tutorials sharing - Corona Common :: General CG Discussion - Chaos Forum here, which is great, but-by any chance- do you know of a place where I can look for models specifically related to construction sites and factories. They don’t have to be highRes as the project will be real-time.
Any help greatly appreciated! Thanks.

http://www.evermotion.org/shop/show_product/archmodels-vol-115/8812

There’s few similary themed models on 3dsky.org as well.

For machinery such as might be found in factories and construction sites, there are some places to get those in CAD format:

Traceparts:
Free 3D models, CAD files and 2D drawings - TraceParts)/content.aspx

Grabcad:
https://grabcad.com/library

Awesome! Thanks a million!