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Occupancy Classification Under NFPA 13

Occupancy Classification Under NFPA 13. Examine the proposed facility and make recommendation on the Occupancy Classification Used to classify fuel loads and fire severity associated with building operations Light Hazard Ordinary Hazards Group 1 and Group 2 Extra Hazard Group 1 and Group 2.

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Occupancy Classification Under NFPA 13

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  1. Occupancy Classification Under NFPA 13 • Examine the proposed facility and make recommendation on the Occupancy Classification • Used to classify fuel loads and fire severity associated with building operations • Light Hazard • Ordinary Hazards Group 1 and Group 2 • Extra Hazard Group 1 and Group 2

  2. Commodity Classifications Under NFPA 13 • The commodity classification is important in sprinkler system design. • Adjustments are made to sprinkler system water demands to ensure it can put out a fire involving the stored commodities. • Examine the proposed facility and make recommendation on the Commodity Classification • Defines potential fire severity based upon the type, amount, and arrangement of commodities

  3. Commodity Classifications Under NFPA 13 • Class I: noncombustibles packaged directly on wooden pallets, single layer cartons, or shrink wrapped • Class II: noncombustibles packaged in slatted wooden crates, corrugated cartons • Class III: wood, paper, natural fiber products • Class IV: Group A or Group B plastics • See the Commodity Classification document for definitions

  4. NFPA 5000 Occupancy Classifications • To classify a building under NFPA 5000: • Chapter 6 provides definitions of the different Occupancy Classifications • Assembly, Educational, Industrial, etc. • In addition to the occupancy classification, a facility can be further classified as: • Multiple occupancy: a building in which 2 or more classes of occupancies exist • Mixed occupancy: a multiple occupancy in which the occupancies are intermingled • Separated occupancy: an occupancy in which the occupancies are separated by a fire rated barrier as required in NFPA 5000

  5. Classifying Your Occupancy Under NFPA 5000 • Under NFPA 5000, the definition of an Industrial Occupancy is an occupancy in which products are manufactured, or in which processing, mixing, … or repair operations are conducted. • Industrial Occupancies must meet Chapter 29 of the NFPA 5000 standards

  6. Classifying Your Contents Under NFPA 5000 • Building contents can be classified as Low, Ordinary, and High • High Hazards Contents can be classified as Level 1 through 5 • All are defined in Chapter 6 of NFPA 5000 • Your building will be using limited amounts of flammable liquids in closed containers in the finishing area.

  7. NFPA 5000, Chapter 34: Protection Levels • Protection Levels 1 thru 5 • If the quantities of hazardous contents exceeds the maximum allowable quantities (MAQ’s) under the Code, then the building construction must meet additional construction/protection requirements • For example, if a quantities of Level 1 High Hazardous Contents exceeds the maximum allowable quantity, then the facility must meet Protection Level 1 requirements • Same for other Contents Classifications (Level 2 – 5) • If you don’t exceed MAQ’s, then follow Ordinary Hazard requirements

  8. Special Operations • NFPA 5000 identifies 66 special operations which require additional building construction requirements from NFPA standards outside of NFPA 5000. • For example, a special operation would be a spray booth which would fall under NFPA 33: Standard for Spray Application Using Flammable and Combustible Materials.

  9. Using Chapter 29 of NFPA 5000 • In addition to the requirements in Chapter 29, an industrial occupancy must also meet the requirements of: • Chapter 7, 8, 13, 14, 31, 35, 36, 37, 38, 39, and 40 • Portions of other Chapters may be required as cited in the Chapter 29

  10. ConstructionType Classifications • Examine the proposed facility and make a recommendation on the following: • Construction Type Classification (NFPA 220 and NFPA 5000) • Type I: (Formerly Fire Resistive) • Type II: (Formerly Non-combustible) • Type III: (Formerly Ordinary Construction) • Type IV: (Formerly Heavy Timber) • Type V: (Formerly Wood Frame) • Mixed Construction

  11. Dead Loads • Material, equipment, or components that are relatively constant throughout the structure's life • Walls, floors, roofs, ceilings, stairways, built-in partitions, finishes, cladding and other similarly incorporated architectural and structural items, and fixed services equipment

  12. Live Loads • All the forces that are variable within the building’s normal operation cycle • Moveable loads • Wind load • Snow load • Rain load • Earthquake load • Flood load

  13. Case Study 2 • Following NFPA 13, selection of the NFPA Building Type Classification (Provided in Module) • Following NFPA 13, determination of Occupancy Classification and Commodity Classifications (Provided in Module) • Following NFPA 5000, determination of Occupancy Classification and Contents Classifications (Include Construction Type, Fire Ratings, Maximum stories, maximum square footage) • Your facility will not exceed the maximum allowable quantities • In your case study, provide one example of each which could be expected for a building of the type in the case study: • Live Loads, Dead Loads, Impact Loads, Static Loads, Axial Loads, Eccentric Loads • Selection of building materials for exterior, including foundation, structural supports, exterior walls and roof • Must be selected according to your building type classification

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