Morphdesigns
Sawhorse
Code: IBC 2015
Working on a 60'x190' post frame maintenance building. The building construction type is VB and occupancy is S-1 and a B, since that area is over 10% and building will not be sprinklered. Per table 504.4, we are allowed 1 story above grade plan, and per table 506.2, we are allowed 9000 sqft building area. However, with frontage increase, we can go over 12,000 sqft, but we do not want to sprinkler, so we are staying under that allowable aggregate fire area (IBC 903.2.9). The 2 long sides of this building, the grade is at floor line. 1 short endwall is sitting into a hill, with retaining walls holding back the rest of the hill. The other short endwall is "2-story", as the basement is exposed on this end. The basement is 60x27
The grade level building footprint is 11,400 sqft. We are going to have a 550 sqft open mezzanine, We have an open storage room so a mezzanine is allowed if it is no larger than 1/3rd of the area of the room, and is open. So including the main level area and this mezzanine area, will put the total aggregate building fire area just under 12,000 sqft. Per IBC 505.2, it states that the mezzanine area is included in the fire area.
We have a small basement. Per IBC 506.1.3, it states basement area is not included in the total allowable floor area of a building. This basement area is 1620 sqft. The basement is open on 1 side (south), so this gives access per ibc 903.2.11.1. This basement has no rooms. The open side has 2 overhead doors and a walk door. There is no access (stairs) from the basement to the ground floor.
The floor above the basement level and the grade level was planned to be a precast floor, due to height restrictions. It is not planned for this floor and the supporting floor structure to be rated.
I do not see anywhere in the IBC that states a basement needs to be included in the aggregate fire area. If the basement does need to be included, then that will put my area over the allowable 12,000 sqft, with no sprinkler. We do not want to sprinkler, so if that is the case, we will provide a 3-hr horizontal fire separation per table 707.3.10, to separate the fire area.
Is this basement considered a fire area or not?
Thanks for your help.
Working on a 60'x190' post frame maintenance building. The building construction type is VB and occupancy is S-1 and a B, since that area is over 10% and building will not be sprinklered. Per table 504.4, we are allowed 1 story above grade plan, and per table 506.2, we are allowed 9000 sqft building area. However, with frontage increase, we can go over 12,000 sqft, but we do not want to sprinkler, so we are staying under that allowable aggregate fire area (IBC 903.2.9). The 2 long sides of this building, the grade is at floor line. 1 short endwall is sitting into a hill, with retaining walls holding back the rest of the hill. The other short endwall is "2-story", as the basement is exposed on this end. The basement is 60x27
The grade level building footprint is 11,400 sqft. We are going to have a 550 sqft open mezzanine, We have an open storage room so a mezzanine is allowed if it is no larger than 1/3rd of the area of the room, and is open. So including the main level area and this mezzanine area, will put the total aggregate building fire area just under 12,000 sqft. Per IBC 505.2, it states that the mezzanine area is included in the fire area.
We have a small basement. Per IBC 506.1.3, it states basement area is not included in the total allowable floor area of a building. This basement area is 1620 sqft. The basement is open on 1 side (south), so this gives access per ibc 903.2.11.1. This basement has no rooms. The open side has 2 overhead doors and a walk door. There is no access (stairs) from the basement to the ground floor.
The floor above the basement level and the grade level was planned to be a precast floor, due to height restrictions. It is not planned for this floor and the supporting floor structure to be rated.
I do not see anywhere in the IBC that states a basement needs to be included in the aggregate fire area. If the basement does need to be included, then that will put my area over the allowable 12,000 sqft, with no sprinkler. We do not want to sprinkler, so if that is the case, we will provide a 3-hr horizontal fire separation per table 707.3.10, to separate the fire area.
Is this basement considered a fire area or not?
Thanks for your help.
