"He stated, The IBC 2009 doesn't require sprinklers except for the basement, so NFPA 13 isn't applicable."..............
2009 IBC/IFC [F] 903.2 Where required. Approved automatic sprinkler systems in new buildings and structures shall be provided in the locations described in Sections 903.2.1 through 903.2.12. [F] 903.2.1.3 Group A-3. An AUTOMATIC SPRINKLER SYSTEM SHALL BE PROVIDED FOR GROUP A-3 OCCUPANCIES where ONE OF THE FOLLOWING CONDITIONS EXISTS: 1. The fire area exceeds 12,000 square feet (1115m2); 2. The fire area has an occupant load of 300 or more; or 3. THE FIRE AREA IS LOCATED ON A FLOOR OTHER THAN A LEVEL OF EXIT DISCHARGE SERVING SUCH OCCUPANCIES. [F] 903.3.1.1 NFPA 13 sprinkler systems. Where the provisions of this code require that a building or portion thereof be equipped throughout with an automatic sprinkler system in accordance with this section, sprinklers shall be installed throughout in accordance with NFPA 13 except as provided in Section 903.3.1.1.1. [F] 902.1 FIRE AREA. The aggregate floor area enclosed and BOUNDED BY FIRE WALLS, FIRE BARRIERS, EXTERIOR WALLS OR HORIZONTAL ASSEMBLIES OF A BUILDING. Areas of the building not provided with surrounding walls shall be included in the fire area if such areas are included within the horizontal projection of the roof or floor next above. [F] 702.1 FIRE BARRIER. A fire-resistance-rated wall assembly of materials designed to restrict the spread of fire in which continuity is maintained. FIRE WALL. A fire-resistance-rated wall having protected openings, which restricts the spread of fire and extends continuously from the foundation to or through the roof, with sufficient structural stability under fire conditions to allow collapse of construction on either side without collapse of the wall. HORIZONTAL ASSEMBLY. A fire-resistance-rated floor or roof assembly of materials designed to restrict the spread of fire in which continuity is maintained. Comment - It's important to define the fire areas in accordance with 702, 902 & 903. Often entire buildings end up being sprinklered and not just the occupancy due to passive fire protection requirements. Hope this helps, John Drucker, CET Fire Protection Subcode Official Fire/Building/Electrical Inspector Fire Marshals Office Borough of Red Bank, NJ Not the official position of any agency, association, committee or otherwise. Obtain required applications, permits, inspections and approvals from Authority(s) Having Jurisdiction. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rod DiBona Sent: Wednesday, June 22, 2011 11:05 AM To: [email protected] Subject: Building trade off update I wanted to follow up and let everyone who helped me think through the process know what happened. This was a new two story courthouse (A3) with a combustible attic above the 2nd floor and a single (B) occupancy attached adjacent on the ground floor. IBC 2009. He was sprinklering the basement, 1st and 2nd but not the attic. We met with the Architect and and asked him if he could educate us on his decision tree that allowed: 1. No sprinklers in the combustible attic that was draft stopped every 3,000 ft. 2. Install fire protection on the first and second floors (not required systems in the A3) to allow a reduction in fire rating of the corridor walls, stairs, and the wall separating the courtroom A3 from the B occupancy. 3. His logic for not mandating an increase of the design area on the 2nd floor to 3,000 ft. His answers were: 1. The IBC 2009 doesn't require sprinklers except for the basement, so NFPA 13 isn't applicable. 2. He stated that the IBC allows for reduction with partial systems. 901.2 "exception" 3. He believed that because partial systems are allowed and that because the code didn't require a system in the attic that we wouldn't need to increase our area on the 2nd floor even though the combustible attic above was unsprinklered. We took the advice of GC / Roland and others and listened and accepted what he said. The tone of the meeting was very good and at the end of the day I am glad he chose more sprinklers than required in lieu of more rating. I personally don't agree with the lack of increase in area ( question #3) but as it has been pointed out...... not my decision. Thanks for all the input and help. We learn and move on. Rod DiBona Rapid Fire Protection _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
