it took me quite a while of working out getting those beams in the right positions. Quite fiddly that was.
Precisely, I have not managed to count the number of boxes used to achieve this effect. 
I also notice that I might want to change the sky texture as it looks like it might rain soon. 
The original project uses a Big sun sky texture but I found the Very cloudy sky texture gave a nice effect in IBL rendering.----------------------------------------
EnkoNyito
