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Occupancy Sign

classicT

Sawhorse
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Sorry for the confusion. The numbers I was suing were for a 1,050 sf Fitness Room. At 50 sf per person (Table 1004.1.2), the occupancy would have been 21. (It ended up a little smaller). It was classified as A-3.
It should not have been classified as an A-3 use. Per 303.1.1 it should have been classified as a B use. If locally amended to require posting, post as described on the CO (i.e. 21).


303.1.1 Small Buildings and Tenant Spaces
A building or tenant space used for assembly purposes with an occupant load of less than 50 persons shall be classified as a Group B occupancy.
 

RLGA

Sawhorse
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Oct 18, 2009
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Phoenix, AZ
Sorry for the confusion. The numbers I was suing were for a 1,050 sf Fitness Room. At 50 sf per person (Table 1004.1.2), the occupancy would have been 21. (It ended up a little smaller). It was classified as A-3.
If the occupant load is less than 50, then it is not an assembly occupancy. Section 303.1.2, subparagraph 1, indicates that an assembly use with an occupant load less than 50 shall be classified as Group B or as part of the occupancy in which it is located. Thus, no signage is required.
 

classicT

Sawhorse
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If the occupant load is less than 50, then it is not an assembly occupancy. Section 303.1.2, subparagraph 1, indicates that an assembly use with an occupant load less than 50 shall be classified as Group B or as part of the occupancy in which it is located. Thus, no signage is required.
Ron, you actually stumbled upon a mistake of my own that I found myself correcting earlier today on this same thread. Do you have perhaps any input as to why the IBC provides the following sections in this manner?

303.1.1 and 303.1.2 Condition 1 are very similar, but as highlighted by the red font, are subtly different.

303.1.1 Small Buildings and Tenant Spaces
A building or tenant space used for assembly purposes with an occupant load of less than 50 persons shall be classified as a Group B occupancy.

303.1.2 Small Assembly Spaces
The following rooms and spaces shall not be classified as Assembly occupancies:

  1. A room or space used for assembly purposes with an occupant load of less than 50 persons and accessory to another occupancy shall be classified as a Group B occupancy or as part of that occupancy.
  2. A room or space used for assembly purposes that is less than 750 square feet (70 m2) in area and accessory to another occupancy shall be classified as a Group B occupancy or as part of that occupancy.
 

mtlogcabin

Sawhorse
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Oct 17, 2009
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Big Sky Country
303.1.1 refers to a building or tenant
303.1.2 is an accessory use that may exceed the 10% threshold of 508.2
Example
A 7,500 sq ft office building with a 1,000 sq ft fitness room will exceed the 10% accessory requirement of 508.2.3 and would be considered a mixed use and non-separated the most restrictive requirements from Chapter 9 would be required to be met. Or it would have to meet the separation requirements such as 2 hours between the Assembly use and the "B" use in a non-sprinklered building
 

RLGA

Sawhorse
Joined
Oct 18, 2009
Messages
2,272
Location
Phoenix, AZ
Ron, you actually stumbled upon a mistake of my own that I found myself correcting earlier today on this same thread. Do you have perhaps any input as to why the IBC provides the following sections in this manner?

303.1.1 and 303.1.2 Condition 1 are very similar, but as highlighted by the red font, are subtly different.

303.1.1 Small Buildings and Tenant Spaces
A building or tenant space used for assembly purposes with an occupant load of less than 50 persons shall be classified as a Group B occupancy.

303.1.2 Small Assembly Spaces
The following rooms and spaces shall not be classified as Assembly occupancies:

  1. A room or space used for assembly purposes with an occupant load of less than 50 persons and accessory to another occupancy shall be classified as a Group B occupancy or as part of that occupancy.
  2. A room or space used for assembly purposes that is less than 750 square feet (70 m2) in area and accessory to another occupancy shall be classified as a Group B occupancy or as part of that occupancy.
Ty J., I don't why they thought it was considered necessary to distinguish between a building/tenant space and a small assembly space. This was added in the 2006 IBC and I don't still have the list of change proposals that would provide the reason. The only real distinction is that the first (Section 303.1.1) requires the building or tenant space to be classified as Group B with no alternative; whereas the second (Section 303.1.2, subparagraph 1) allows the space to be classified as Group B or as part of the occupancy in which it is located.
 

classicT

Sawhorse
Joined
Aug 2, 2017
Messages
1,509
Location
Washington State
Ty J., I don't why they thought it was considered necessary to distinguish between a building/tenant space and a small assembly space. This was added in the 2006 IBC and I don't still have the list of change proposals that would provide the reason. The only real distinction is that the first (Section 303.1.1) requires the building or tenant space to be classified as Group B with no alternative; whereas the second (Section 303.1.2, subparagraph 1) allows the space to be classified as Group B or as part of the occupancy in which it is located.
Thanks for the insight. It seems to be such a minor difference that I do not see a reason to separate the two sections.
 
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