Fire Sprinkler Design

One - Check with your local AHJ (authority having jurisdiction) to find what code they follow and enforce.

Two - Check with a local fire protection contractor in your area.

National Fire Protection Agency would be my choice to start.

NFPA
ARS 34-461 will also apply
If located in Maricopa county, they will have an opinion, too.

Local fire departments will probably need to inspect it and issue a permit along with a certificate of occupancy if the structure is new or is being renovated. The insurance carrier will definitely have an opinion on this.

Two common fire codes in the U.S. are the UFC (Uniform Fire Code) and the IFC (International Fire Code), and there may be others. Find out which is used in your jurisdiction; you should be able to buy a copy or check one out from local library or other source.

Fire sprinklers typically cover a 10ft x 10ft area; deploy accordingly. The sprinkler system will need an adequate water supply. There will be specific provisions for grease hoods over cooking surfaces, with exhaust fan standards and dedicated fire extinguishing system(s). Also some number of simple fire extinguishers of certain types located at such-and-such spacings throughout the facility.

Local fire marshals (call the Fire Department) can give good advice. From my experience, they are helpful and easy to work with. These systems and extinguishers need to be inspected and serviced periodically, which can be contracted with an extinguisher supplier.

Why don't you contact a local or regional company that designs fire sprinkler systems?

In the Twin Cities area I know there are over 5 companies that design fire sprinkler systems for business and residential. My son works in this field, currently designing residential systems.