Hi, my first post here. I managed to pass CE, PM, PCM first try, but unfortunately I had my first fail with PA. I felt like the questions were the most vague in that exam..
Anyway, I know one of the areas I didn't get right was IBC means of egress. I'm really struggling to understand occupant load factors. There seems to be multiple interpretations on the internet of how to use table 1004.1.2 & I would be incredible grateful to anyone that could help clear this up for me!
QUESTION 1 -Scenario 1: A reception/waiting room and conference room (made for less than 50 people), in an office.
- Method No. 1 - Would use the 'Assembly without fixed seats, unconcentrated table & chairs' for the conference room even if would be treated as accessory to the office spaces for sake of the building areas/hts etc? If it had less than 750sf and for less than 50 people. I am confused on whether I only supposed to use the assembly for areas that would be classes as Assembly Occupancy or is this independent of the more simple occupancy categories? In IBC Illustrated, pg 193, there is an office space, in which it uses the assembly part of table 1004.1.2 for the conference room and seating area. However both are for less than 50 people so they wouldn't be assembly spaces. Does this have something to do with the assembly spaces although individually being for less than 50 people, the total of the accessory assembly spaces being more than 10%?
- Method No. 2. - A youtube video I watched used 'Business' -Gross 100, for the whole floor to get the occupant load for an office floor. Then only to calculate the amount & size of individual rooms exits he uses 'Assembly unconcentrated (table & chairs)' -15 net, assignment for the conference room, and so on. Using this method, for a clothing store, would you use the 60 gross for all the spaces including the storage room for main stores exit requirement, and then for the storage room's individual exit requirements use its individual assignment of 300?
- Method No. 3 - I would just use Business gross for the whole floor related to business, for the occupant load for the floor & for individual room exits.
I tried googling an example of a waiting room and get conflicting answers on what they would be classed as- assembly/ based on the main occupancy.
QUESTION 2 - There's a theatre with fixed seats & a lobby area which is only used for the theatre. Do you count the lobby sf area? As assembly assignments use 'Gross' do you just use the same assembly assignment even if it wouldn't be used at the same time as the theatre? Or for bathrooms for example even though it would have the same people using them as the other spaces?
QUESTION 3 - If an assembly area for less than 50 ppl, that is less than 750 SF, but is also more than 10% of the area of the main occupancy (which isn't occupancy B). Would you not be able to class it as accessory to the main use as its more than 10% and it would be classed as Occupancy B?
QUESTION 4 - There is an occupancy using a 'net' figure and an occupancy using a 'gross' figure on a floor, and they share a bathroom. BCI seems to think you can just assign the bathrooms to the Net occupancy and not count that SF in your calculations. I would have thought you should do the opposite?
BCI also says you should round up the number of occupants for occupant load calcs however on page 193 it rounds down- 225/7 = 32. I am assuming that number was just a typo.
I'm sure my in-eloquent rambling post shows how lost I am with this particular topic. Perhaps I am making this more complicated than it needs to be.. I am very anxious about making the same mistakes as last time on my next exam so would appreciate any input!
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