Fire Protection Design in California


Peyman Group [714] 496-8466 Mechanical Consultant Engineering in Orange County, CA Peyman Group will prepare preliminary design, water pressure calculation, fire pump calculation and fire pump selection as a fire protection designer. We prepare fire protection plans for design build contractor submission.

Peyman Group [714] 496-8466 Mechanical Consultant Engineering in Orange County, CA Peyman Group prepares fire protection plans ready for design-build contractors, or licensed fire protection engineers use.

We use guide lines and regulations of the latest National Fire Protection Association (NFPA) codes and also California Fire Code in our fire protection designs.

Please call Peyman Group [714] 496-8466 Mechanical Consultant Engineering in Orange County, CA Peyman Group NOW to have preliminary discussion about your fire protection design project and immediate assistance by our experts.


Some sample guidelines for designing of Fire Sprinkler systems are:

Integrate fire protection system with range hoods.

All Fire Department connections shall face the street and be free of any obstructions.

Hydraulic calculations for fire flow shall be provided by a California licensed professional fire protection engineer.

If a fire sprinkler pump is required, provide provisions for pump housing, tank and electrical requirements.

    Fire Protection Design in California


On fire mains, provide a reduced pressure principle backflow assembly upstream of the fire department connection.

All valves controlling the water supply to automatic sprinkler systems and water flow switches for automatic sprinkler systems shall be electrically supervised.

Fire sprinkler systems shall be designed and installed so that they are readily serviceable.

Every building shall have a fire sprinkler control valve located 5’-0” above the floor.

Every riser assembly shall have a check valve.

In multi-story buildings, every floor shall have a separate shut-off valve, check valve, tamper switch, and flow switch at an accessible location, with an Inspector’s test valve at the opposite end of the building.

Exception: If each floor has an independent shut-off valve located at the fire sprinkler riser assembly, then a main building shut-off valve is not required.

Post indicator valves are not required to be provided along with backflow prevention assemblies on fire mains.

Fire mains are required to have sectional controlling valves at appropriate points per latest edition of NFPA.

Provide visual indicators of open or close valves by using Outside Stem and Yoke (OS & Y) valves.

Post indicator valves (PIV) are required, outside the building, where a fire sprinkler main passes through the building foundation.

Fire sprinkler main drain valve discharge line shall be piped into a sump pit or to a storm drain. Main drain lines shall never discharge into a sanitary plumbing fixture, not even into a floor sink nor a floor drain.

The Fire Department Connection (FDC) shall be located upstream of the fire sprinkler riser assembly.

A shut-off valve on a fire main backflow prevention assembly shall not be considered the building’s main shut-off valve. Each building shall have its own separate shut-off valve as part of the riser assembly.

If a fire pump is required. Provide calculations on drawings and specifications.

Standpipe systems shall be provided in buildings and areas per latest edition of CFC and installed in accordance with the latest edition of NFPA 14.

Class I wet Manual standpipes without hoses and without hose cabinets shall be installed in buildings where the floor level of the highest story is located more than 30 feet above the lowest level of fire department vehicle access.

Class I wet automatic standpipes without hose and without hose cabinets shall be installed in buildings where the floor of an occupied story is greater than 75 feet above the lowest level of fire department vehicle access.

Standpipe hose connections shall be unobstructed and readily accessible to the Fire Department, and all connections shall conform to Code and fire authority’s requirements.

All stand pipe hose valve connections shall be in recessed cabinets wherever possible.

    Fire Protection Design in Orange County California


CLASSIFICATION OF OCCUPANCIES:
The principal occupancy classifications are light hazard, ordinary hazard, and extra hazard.  The hazards classification will be determined based on the occupancy classification and permitting agency reviews. 

Listed below are the classifications with examples of common occupancies listed under each. The basic hazard classification of occupancy does not define the fire hazard present in all areas of that occupancy.  If more hazardous processes or areas exist within a given occupancy, protect these areas in accordance with the fire protection requirements pertaining to the hazard classification of that area. Determine the classification for unlisted occupancies from the definitions or by comparison with one of the listed occupancies.

1) Light Hazard Occupancies:
Occupancies or portions of occupancies where the quantity and combustibility of the contents are low and fires with relatively low rates of heat release are expected. Small, scattered amounts of flammable liquids in closed containers are allowable in quantities not exceeding 5 gal per fire area.

This classification includes but is not limited to the following occupancies:
Churches and chapels
Gymnasiums
Clinics (dental, outpatient, patient areas only)
Hospitals
Data processing areas
Mess areas
Dispensaries (patient areas only)
Drill halls (not used for storage or exhibition)
Offices
Child development centers


2) Ordinary Hazard Group 1 Occupancies:
Occupancies or portions of occupancies where combustibility is low, quantity of combustibles is moderate, stockpiles of combustibles do not exceed 8 ft., and fires with moderate rates of heat release are expected.  Modest, scattered amounts of flammable liquid, in closed containers are allowable in quantities not to exceed 20 gal per fire area.

This classification includes but is not limited to the following occupancies:
Sheet metal shops
Bowling alleys
Ship fitting shops
Clubs (officer, enlisted personnel, etc.)
Kitchens and bakery
Small stores
Theaters and auditoriums
Welding shops
Forge shops
Laundries
Automobile parking garage
Electronics assembly and repair

Fire Protection Design for buildings  in Orange County

3) Ordinary Hazard Group 2 Occupancies:
Occupancies or portion of occupancies where quantity and combustibility of contents is moderate, stockpiles do not exceed 12 ft., and fires with moderate rate of heat release are expected. Moderate, scattered amounts of flammable liquids in closed containers are allowable in quantities not to exceed 50 gal per fire area.  Small amounts of flammable liquids may be exposed as required by normal operations.  

This classification includes but is not limited to the following occupancies:
Exchanges
Aviation depots
Boiler rooms
Electrical maintenance shops
Engine and generator rooms
Laboratories
Refrigeration and air compressor rooms
Switchgear rooms
Machine rooms
Printing shops (using inks having flash points above
110 °F)
Libraries
Piers and wharves
Vehicle repair garages
Woodworking shops


4) Special Occupancies:
Special occupancies are facilities or areas that cannot be assigned a specific classification because of special protection requirements.

This classification includes but is not limited to the following occupancies:
Flammable and combustible liquids
Aircraft hangars
Engine test cells
Ordnance plants
Rubber tire storage
Warehouses (piled or rack storage)
Foam rubber or plastic storage

Peyman Group [714] 496-8466 Mechanical Consultant Engineering in Orange County, CA Peyman Group performs Mechanical HVAC, Electrical, Plumbing, Fire-Protection, Civil, Structural Design and Construction Management for Residential, Commercial, Industrial & Educational Buildings.

"Precision is our Guideline.
Our Services yield Authentic Design.
Our Mission is Precision and Constant Improvement in our Performance to attain Client's Satisfaction, Trust and Peace of Mind!"

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*Note : Some of the pictures on this website are taken at STV INC, & L & D Engineering,
the previous Companies Mr. Peyman has worked at as a Mechanical Engineer
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