and a back up capbility for the fire command center. this is a four-block long building, and it is exceptionally large in terms of population, so the determination was made redundancy and security and fire operations was critical. mass notification, audible and visual. it is robust means that it carries five feet of dirt on the top and designed and aten you ate radio signaling. you know that you will have a paging system but you don't have all of the information that you need to model it. these hor sonal graphs represent computer based models that show how the final actual design at about 90 percent, 95 percent would have performed. and opportunities exists. those changes are included as part of this request for additional fund,al location. >> the glazing systems it has an extensive amount of glazing you will see on the left and an elevation of the grand hall. it is a glass, this is glass and metal that are held together to form essentially a curtain wall as a grand skylight and it has a great glass roof which is a glass floor. all of t