Hi Every one
Do i need to have auto cad installed to expoert SketchUp into a dwg file and to revive dwg file.
what’s that ?
anyway, you don’t need autocad to export to dwg, simply go to file > export > 2D or 3D depending on what you want to export and choose dwg as output
Well done for reading the text 
Thank you for your reply I will give it a go.
You can export 2D or 3D DWG or DXF files directly from SketchUp Pro and SketchUp Go (web).
To view DWG files you can use, for instance, the free online viewer from Autodesk, or download and install the free DWG TrueView application, also from Autodesk. There are other options too.
Thank you for your guidance much appreciated.
I will give it a go and let you know how I get one.
Thanks once again.