The fire sprinkler scope of work consists of protecting a group II hanger using a wet system. The following exception from IFC must be strictly adhered to since this will not be a foam system as required by NFPA 409. Extra hazard II design has been used per NFPA 13. There are two risers supplied by a new 8” underground and new 8” back flow preventer. One 6” riser for the existing hangar and one 8” riser for the new hangar. Since there is not a 3-hour separation between the hangars, they shall be treated as one fire area.

IFC: 914.8.2 - Exception: When a fixed base operator has separate repair facilities on site, Group II hangars operated by a fixed base operator used for storage of transient aircraft only shall have a fire suppression system, but the system shall be exempt from foam requirements.

The fire protection underground is under permit FIR13-00460

Aviation Specialties Unlimited - New hangar and office expansion - To construct a new 18,000 sq. ft. one story, pre-engineered metal building, group II aircraft hangar and office addition with a 3,425 sq. ft. basement and 3,475 sq. ft. office mezzanine. This addition is being constructed on the east side of an existing 8,900 sq. ft. one-story aircraft hangar and office building. This permit also includes the construction of a 400 sq. ft. accessible restroom and utility room area at the southeast corner of the existing hangar. This permit also includes related site improvements. All construction per the approved plans and attached comment list. JCM