mr. oh o'reardon's position that it includes a demolition. you can't add a floor to a structure without removing existing supporting structure. all vertical additions should require a separate set of plans, showing what was demolished and what will be added. these plans will bring clarity for district building inspectors and planning department planners. building inspectors like planners are not structural engineers, and we have been assigning the responsibility to both groups that is unreasonable. i am asking the building inspection commission to support mr. o'reardon's proposal and to request to support the development of an implementation plan consistent with his proposal. thank you very much. >> president mccarthy: thank you. next speaker, please. >> clerk: there's no additional public comment. so going to the next item. item 4, commissioner's questions and matters. fa, inquiries to staff. at this time commissioners may make inquiries to staff regarding various documents, policies, practices and procedures, which are of interest to the co

mr. strong? >> maybe i can add because chief building inspector o'reardon did look into that dplant when i received it from our colleague at nbc, and there is no cracked ceiling marks to be observed is what i was told. >> supervisor peskin: okay. a disagreement amongst experts. with that, if there are no questions from staff, thank you -- i mean, my colleagues, thank you for your continued indulgence of this supervisor's quixotic mission to make san francisco chamber. >>clerk: through the chair, would you like to close public comment before you take item on this item? >> supervisor peskin: i would close public comment. >> supervisor kim: we have a motion to close this item to the call of the chair. i want to thank supervisor peskin's work, and all the department's work on the tall building safety strategy. it's good that we are first to engage in work like this. as we go forward with the central soma plan, and we approve this, i think this board needs to know that we are putting together a plan that ensures the safety of all of our workers and residents, including new workers and residents that wil