but tell me you are the heart of gold in july [unintelligible] ♪ >> good afternoon, i'm lawrence kornfieldlcome to our brown bag lunch. the fire department as a lot to do with fire escapes in san francisco. we have tens of thousands of fire escapes in san francisco. it's sort of like utility wires, until you start looking for them. you don't even see them. today we're going to look at them and for them and talk a little bit about what they are there for and how they should be maintained. what our standards are. so we are right here in front of building services office at 1660 mission street. we have one of many buildings served by fire escapes. they are typically used when there's a required means of existing or egressfrom the building. this building has a main stairway and all these fire escapes. i don't know about the backside. it probably has more exits that would be typically required to have. >> typically fire escapes are the second. the first is for existing buildings. my guess is the building has been broken up. that's why they add more than one fire escape. >> and in fact one of ba