 In this video we are going to take a look at how we can optimize and create building form and geometry based on sun studies in Vasari and Revit. We'll take a look at shadow patterns, overshadowing neighbor buildings and how to extrude volumes for optimizing building form. The concept of environment was inside Vasari and in this video I'll show how we can work with the environment and make sure that we are not creating overshadowing for these buildings here and these buildings here and how we can work with the shading conditions in relation to the overall form of the building. Just using simple shadow studies from the inside Vasari. First of all I turned on the sun path here and I'm now able to go in and say ok I want to make a previous solar study and I can now just hit this here or I can play it but I prefer just hitting here so you can see that here in the final result we really avoided creating any kind of overshadowing for these buildings here which was one of the design intents in this project and if we hit it here we can then go to the window and we can take a look at if we are creating shading or overshadowing for these buildings here. So as you see of course when the sun is quite low we will make some overshadowing for these buildings here but that's not that important that's something that's really difficult to avoid in an urban context like this. So the way to go about it just hitting escape is that I want to take this involvement here and move it into a design option. So if I'm hitting the design option bottom here and I say new options set and say close and I can now mark out the involvement here and I want to deselect the sun path and then I can press the blue arrow here and just say ok I want to have it in design option one. So you'll see that within the main model view here I'm not able to do anything in here so I can now go down you can see that but option one and I'm now able to edit the geometry from here. So what I want to do now is I want to hit the design options again and I mark this option one out say finish editing and I want to say duplicate and I'm going to make a few duplicates down here. The reason for doing this is that I don't want to ruin my little case example here so I'm now able to go down to say ok I want to go to copy number one and I can now begin to work with the involvement here. Just beginning to see the impact of the shadows while I'm modeling the building. So I want to take this building up here and then maybe move this up. The reason why I can't edit these here I have to go into it in place to do that. Ok finish mask like that is because I made these as parameter based masses. So I also made some different views here one for the different sun extremes throughout the year spring summer and winter so I can easily hit that and see the shadows at that specific time throughout the year. And if I'm now going back to design option one you'll see that I have the original model here and I can now go to the copy of the copy and even begin to work even more. And I can also delete this and just to show how this is working to go to model say create mask and then I'm just sketching out something here. I want to mark that whole thing out and I want to rotate it like that. Ok and just move it into place or I can do that afterwards and say just create form. And now I have a new mask here that I can work with and work with the shadow effect from this new involvement here. Because I'm not making shadow effects for this building here doing the summer or doing the spring I want to go to the window. And here I can now begin to see that if I get down here I will just begin to conflict with these buildings down here. So really it's just a simple way that you can use simple massing geometry to help you create form in relation to overshadowing conditions for existing buildings. And in relation to the overshadowing conditions for the building itself. And I can just say ok I want to go back to option one and say this was what I was looking for here. And then I can go into my design options and say accept primary one. So really that's just pretty simple that you can set up pretty fine views. You can work with simple massing. You can hit preview solar study to look more efficient on your shadows. And of course you are also able to if you see here to just go and drag your sun to or just to press the specific time you want to look at or the specific month you want to look at. Thank you.