This is an excellent video, but I do have one minor issue with it and it is something I encounter occasionally when working as a code consultant for architects. At the 11:43 mark the video introduces IBC Table 1006.2.1 and then at the 11:59 mark it states that two exits are required when the occupant load is "50 - 500." This is a bit misleading in that many designers assume that Table 1006.2.1 applies to stories, too, but, as the table caption states, this applies only to "spaces." It is better to assume that all spaces and stories require two means of egress as IBC Table 1006.3.1 indicates and then modify that assumption by reviewing applicable requirements that provide exceptions.In regard to stories, each story is required to have two exits or access to two exits unless IBC Table 1006.3.2(1) or IBC Table 1006.3.2(2) applies, which permits a story to have one exit. IBC Table 1006.2.1 (shown in the video) applies to exits from spaces and when a space has an occupant load that does not exceed maximum indicated, then one exit or exit access is permitted; however, if the space under consideration is a entire story above the level of exit discharge, then two exits may still be required even if the second story has an occupant load less than 50. IBC Table 1006.3.2(2) only allows one exit from the story when the occupant load is less than 30 and the occupancy group is limited to Groups B, F, M, and S. Thus, if an open office on the second story of a building is the only space on that story and the occupant load is 40, two exits are required from that story. Anything above the third story requires two exits regardless of occupant load, except for Group R-2, which is permitted three stories with a single exit per IBC Table 1006.3.2(1) under certain conditions.
Thank you, RLGA, for your comment. We had several items like this which the review group of architects and code officials debated. There are so many exceptions and nuances we sifted through to make the information clear for students being exposed to this for the first time within a 50-minute class period. Certainly your book, "Applying the Building Code: Step-by-Step Guidance for Design and Building Professionals," is a great resource for early professionals.
At 12:36, you use unconcentrated assembly (tables and chairs) to calculate the occupant load for a conference room in a Business occupancy. A conference room is a component of a Business occupancy and its occupant load was already calculated earlier in the video for the entire floor. You should have demonstrated the two exit requirement without using the conference room example. Having two ways to calculate an occupant is not correct. There can only be one.
Hi Asahel, It's important to check each room or space to verify it has proper exit capacity per its specific use to see if it is over 50 (in most cases) and might need two exits. A conference room can be considered assembly with tables and chairs. We used the 127 number for the whole floor for the overall exit capacity. This may be a conservative way to do this, but code officials I have worked with have done it this way.
@@jeannehomer244 Ultimately the Authority Having Jurisdiction will have their interpretation. That is their prerogative and every jurisdiction has its characters. However, the "conference room" occupant load subcategory under Assembly areas is a relic of the Uniform Building Code 1997 (Chapter 10, table 10-A). Many code officials may believe the International Building Code still includes the old category (or feel like it should) but it does not. Besides, if we were to accept the conference room as an Assembly occupancy then a one-hour fire barrier would be required between Assembly and Business occupancies.
Jeanne, what is the proper citation date and institution for this since it is funded by but not specifically a NIST video (if only I paid attention tot hat to begin with, would have saved time searching for it on NIST's site!)? I presume OSU? Or if you can provide the general proper citation information. Thanks.
for mixed use occupancy without fire seperations you use the most stringent occupancy for building height and area calculations but you use all of the occupancies individually for egress calculations?
This should be a must know for anyone working in the security industry.
I was confused with the caldulations, after watching this video the concept is crystle clear. Thanks to the author 🙏
Learnt more from this video compared to my Building codes class that i spent so much $$$ on in University, thanks SO much!
Simply amazing detailed. Better than most seminars that attended in person
This is very useful, as I live on the 2nd floor of a residential building and am being made by the management to treat it as a 4th floor (High-Rise).
Very useful info especially having the adequate amount of exit doors and accessible pathways to safely exit
I hope you show how you consider the common path of the assembly area?
This is an excellent video, but I do have one minor issue with it and it is something I encounter occasionally when working as a code consultant for architects. At the 11:43 mark the video introduces IBC Table 1006.2.1 and then at the 11:59 mark it states that two exits are required when the occupant load is "50 - 500." This is a bit misleading in that many designers assume that Table 1006.2.1 applies to stories, too, but, as the table caption states, this applies only to "spaces." It is better to assume that all spaces and stories require two means of egress as IBC Table 1006.3.1 indicates and then modify that assumption by reviewing applicable requirements that provide exceptions.In regard to stories, each story is required to have two exits or access to two exits unless IBC Table 1006.3.2(1) or IBC Table 1006.3.2(2) applies, which permits a story to have one exit. IBC Table 1006.2.1 (shown in the video) applies to exits from spaces and when a space has an occupant load that does not exceed maximum indicated, then one exit or exit access is permitted; however, if the space under consideration is a entire story above the level of exit discharge, then two exits may still be required even if the second story has an occupant load less than 50. IBC Table 1006.3.2(2) only allows one exit from the story when the occupant load is less than 30 and the occupancy group is limited to Groups B, F, M, and S. Thus, if an open office on the second story of a building is the only space on that story and the occupant load is 40, two exits are required from that story. Anything above the third story requires two exits regardless of occupant load, except for Group R-2, which is permitted three stories with a single exit per IBC Table 1006.3.2(1) under certain conditions.
Thank you, RLGA, for your comment. We had several items like this which the review group of architects and code officials debated. There are so many exceptions and nuances we sifted through to make the information clear for students being exposed to this for the first time within a 50-minute class period. Certainly your book, "Applying the Building Code: Step-by-Step Guidance for Design and Building Professionals," is a great resource for early professionals.
Amazing and simple👍
What an awesome video! So much great info!
Wow this is a powerful tool
At 12:36, you use unconcentrated assembly (tables and chairs) to calculate the occupant load for a conference room in a Business occupancy. A conference room is a component of a Business occupancy and its occupant load was already calculated earlier in the video for the entire floor. You should have demonstrated the two exit requirement without using the conference room example. Having two ways to calculate an occupant is not correct. There can only be one.
Hi Asahel,
It's important to check each room or space to verify it has proper exit capacity per its specific use to see if it is over 50 (in most cases) and might need two exits. A conference room can be considered assembly with tables and chairs. We used the 127 number for the whole floor for the overall exit capacity. This may be a conservative way to do this, but code officials I have worked with have done it this way.
@@jeannehomer244 Ultimately the Authority Having Jurisdiction will have their interpretation. That is their prerogative and every jurisdiction has its characters. However, the "conference room" occupant load subcategory under Assembly areas is a relic of the Uniform Building Code 1997 (Chapter 10, table 10-A). Many code officials may believe the International Building Code still includes the old category (or feel like it should) but it does not. Besides, if we were to accept the conference room as an Assembly occupancy then a one-hour fire barrier would be required between Assembly and Business occupancies.
14:19 by "more than" half. IBC 1005.7.1
What software was used to demonstrate egress in this presentation?
Nice video
thanks this help me a lot as plan evaluator...
good video...!
Thank you very much! This helps me a lot as a new plans examiner. :)
You asked another question about getting plans- please email me directly at jeanne.homer@okstate.edu
Hahaha, you saw that comment huh. I thought it was too much to ask that's why I deleted it. I will send you an email. Thank you so much! :)
This was good 😊
Jeanne, what is the proper citation date and institution for this since it is funded by but not specifically a NIST video (if only I paid attention tot hat to begin with, would have saved time searching for it on NIST's site!)? I presume OSU? Or if you can provide the general proper citation information. Thanks.
Hi JR,
I apologize for not seeing this earlier. It is with Oklahoma State University, as you assumed. April 13, 2016 is the date.
I don't trust stairs.
They're always up to something.
for mixed use occupancy without fire seperations you use the most stringent occupancy for building height and area calculations but you use all of the occupancies individually for egress calculations?
Sorry for the delay, Shane. Yes, you are correct. Why don't you email me directly, and I can give you some references? jeanne.homer@okstate.edu
Thanks for this
this vidow made mean of egress class so easy to me
Go Pokes ! I recognize the student union