so the structural claukdz at this point were not a subject of the site permit when it was issued. the design panel and dbi continue to work with d b i for the and i democrats for the site permit that are currently in discussion and when they sign off then dbi continues 80 that review before they issue the addendums to the permit. now the appellant is here do i donating tonight with the deduct core system that's been used by m k a they looked at newspapers articles and this ground has been plowed over for many, many years and the design approach and the deduct approach has bun used in many of the projects that are currently under constricts or have been approved. the affinity the lumina and transbay tower and 350 midgets and the transbay tower. the only argument it the structural platoon is not being used it should be used in a category 3 as opposed to a risk category 2. every high-rise and office building in san francisco per code is built to the risk category 2 level. the code is specific on which a code 3 building should be provided and that's buildings that have obviouscy level