STRUCTURE FIRE CONTROL INSTRUCTOR 1 NFPA 1142 NFPA 1142 FAMILIARIZATION FAMILIARIZATION
STRUCTURE FIRE CONTROL INSTRUCTOR1
NFPA 1142NFPA 1142FAMILIARIZATIONFAMILIARIZATION
TERMINAL PERFORMANCE TERMINAL PERFORMANCE OBJECTIVEOBJECTIVE
The student shall determine the minimum The student shall determine the minimum water supply necessary to conduct live fire water supply necessary to conduct live fire
training evolutions in an acquired training evolutions in an acquired structure or training center burn building, structure or training center burn building,
according to according to NFPA 1142, Standard on NFPA 1142, Standard on Water Supplies for Suburban and Rural Fire Water Supplies for Suburban and Rural Fire
Fighting. Fighting.
STRUCTURE FIRE CONTROL INSTRUCTOR3
ENABLING OBJECTIVESENABLING OBJECTIVES
Identify & describe the purpose of NFPA 1142.Identify & describe the purpose of NFPA 1142.
Identify & describe the occupancy hazard Identify & describe the occupancy hazard classifications found in NFPA 1142.classifications found in NFPA 1142.
Identify & describe the construction Identify & describe the construction classification numbers found in NFPA 1142.classification numbers found in NFPA 1142.
Determine minimum water supply Determine minimum water supply requirements, including a 50% reserve, for requirements, including a 50% reserve, for conducting live fire training evolutions in a conducting live fire training evolutions in a structure.structure.
PURPOSE OF NFPA 1142PURPOSE OF NFPA 1142
NFPA 1142, Standard on Water NFPA 1142, Standard on Water Supplies for Suburban and Rural Supplies for Suburban and Rural
Fire Fighting contains formulae for Fire Fighting contains formulae for determining the minimum amount determining the minimum amount of water that must be available on of water that must be available on site when conducting structure fire site when conducting structure fire
control training.control training.
STRUCTURE FIRE CONTROL INSTRUCTOR5
NFPA 1142NFPA 1142
WATER SUPPLYWATER SUPPLY Instructor-in-charge shall ensure that: Instructor-in-charge shall ensure that:
the onsite water meets the required or the onsite water meets the required or needed water supply for the given structureneeded water supply for the given structure
water supply meets requirements of NFPA water supply meets requirements of NFPA 11421142
a minimum reserve of water be available for a minimum reserve of water be available for each evolutioneach evolution
attack lines and backup line are feed from attack lines and backup line are feed from separate water sourcesseparate water sources
STRUCTURE FIRE CONTROL INSTRUCTOR6
NFPA 1142NFPA 1142
WATER SUPPLYWATER SUPPLY Understanding NFPA 1142 and how it Understanding NFPA 1142 and how it
works with NFPA 1403works with NFPA 1403What information do you need to gather to What information do you need to gather to
determine the needed water for the determine the needed water for the structure?structure?Occupancy Hazard ClassificationOccupancy Hazard ClassificationConstruction ClassificationConstruction ClassificationStructural DimensionsStructural DimensionsExposuresExposures
STRUCTURE FIRE CONTROL INSTRUCTOR7
NFPA 1142NFPA 1142OCCUPANCY HAZARD CLASSESOCCUPANCY HAZARD CLASSES OHC 3OHC 3
Considered Severe Hazard OccupanciesConsidered Severe Hazard OccupanciesThese structures shall be considered an These structures shall be considered an
exposure no mater what there sizeexposure no mater what there sizeIncludes the following occupancy types:Includes the following occupancy types:
Cereal millsCereal millsExplosives manufacturing/storageExplosives manufacturing/storageSaw millsSaw millsPlastic processing facilitiesPlastic processing facilities
STRUCTURE FIRE CONTROL INSTRUCTOR8
NFPA 1142NFPA 1142OCCUPANCY HAZARD CLASSESOCCUPANCY HAZARD CLASSES OHC 4OHC 4
Considered High Hazard OccupanciesConsidered High Hazard OccupanciesThese structures shall be considered an These structures shall be considered an
exposure no mater what there sizeexposure no mater what there sizeIncludes the following occupancy types:Includes the following occupancy types:
Commercial barns and stablesCommercial barns and stablesBuilding materials supply storageBuilding materials supply storageDepartment storesDepartment storesTheatersTheaters
STRUCTURE FIRE CONTROL INSTRUCTOR9
NFPA 1142NFPA 1142OCCUPANCY HAZARD CLASSESOCCUPANCY HAZARD CLASSES OHC 5OHC 5
Considered Moderate Hazard OccupanciesConsidered Moderate Hazard OccupanciesThe quantity and combustibility of contents The quantity and combustibility of contents
develop at moderate rates.develop at moderate rates.Includes the following occupancy types:Includes the following occupancy types:
Clothing manufacturingClothing manufacturingLibraries with large stock roomsLibraries with large stock roomsLaundriesLaundriesTobacco barnsTobacco barnsRestaurantsRestaurants
STRUCTURE FIRE CONTROL INSTRUCTOR10
NFPA 1142NFPA 1142OCCUPANCY HAZARD CLASSESOCCUPANCY HAZARD CLASSES OHC 6OHC 6
Considered Low Hazard OccupanciesConsidered Low Hazard OccupanciesThe quantity and combustibility of contents The quantity and combustibility of contents
develop at low ratesdevelop at low ratesIncludes the following occupancy types:Includes the following occupancy types:
ChurchesChurchesMunicipal buildingsMunicipal buildingsService stationsService stations
STRUCTURE FIRE CONTROL INSTRUCTOR11
NFPA 1142NFPA 1142OCCUPANCY HAZARD CLASSESOCCUPANCY HAZARD CLASSES OHC 7OHC 7
Considered Light Hazard OccupanciesConsidered Light Hazard OccupanciesThe Quantity and Combustibility of The Quantity and Combustibility of
contents develop at light ratescontents develop at light ratesIncludes the following occupancy types:Includes the following occupancy types:
ApartmentsApartmentsDormitoriesDormitoriesHotelsHotelsSchoolsSchoolsPrivate dwellingPrivate dwelling
STRUCTURE FIRE CONTROL INSTRUCTOR12
NFPA 1142NFPA 1142CONSTRUCTION CLASSIFICATIONCONSTRUCTION CLASSIFICATION
Construction Class 0.5Construction Class 0.5This classification is closely related to NFPA This classification is closely related to NFPA
Type I ConstructionType I ConstructionType I DefinedType I Defined
Structural members include walls, columns, Structural members include walls, columns, girders, trusses, arches, floor, and roofs that are girders, trusses, arches, floor, and roofs that are made of approved non-combustible or limited made of approved non-combustible or limited combustible materialscombustible materials
STRUCTURE FIRE CONTROL INSTRUCTOR13
NFPA 1142NFPA 1142CONSTRUCTION CLASSIFICATIONCONSTRUCTION CLASSIFICATION
Construction Class 0.5Construction Class 0.5Each component has a fire rating that it must Each component has a fire rating that it must
meet:meet:Exterior Bearing Walls – 4 hour ratingExterior Bearing Walls – 4 hour ratingInterior Bearing Walls – 3 to 4 hour ratingInterior Bearing Walls – 3 to 4 hour ratingBeams, Girders, trusses, and Arches – 3 to 4 hour Beams, Girders, trusses, and Arches – 3 to 4 hour
ratingratingFloors – 3 hour ratingFloors – 3 hour ratingRoofs – 2 hour ratingRoofs – 2 hour rating
STRUCTURE FIRE CONTROL INSTRUCTOR14
NFPA 1142NFPA 1142CONSTRUCTION CLASSIFICATIONCONSTRUCTION CLASSIFICATION Construction Class 0.75Construction Class 0.75
This classification is closely related to NFPA This classification is closely related to NFPA Type II and IV (Heavy Timber) ConstructionType II and IV (Heavy Timber) Construction
Type II DefinedType II DefinedStructural members include walls, columns, Structural members include walls, columns,
girders, trusses, arches, floor, and roofs that are girders, trusses, arches, floor, and roofs that are made of approved non-combustible or limited made of approved non-combustible or limited combustible materials and shall not have a fire combustible materials and shall not have a fire resistive rating less than those specified in NFPA resistive rating less than those specified in NFPA 1142 table 6.2.21142 table 6.2.2
STRUCTURE FIRE CONTROL INSTRUCTOR15
NFPA 1142NFPA 1142CONSTRUCTION CLASSIFICATIONCONSTRUCTION CLASSIFICATION Construction Class 0.75Construction Class 0.75
Type IV DefinedType IV DefinedThis construction is considered to be This construction is considered to be
construction in which the exterior and interior construction in which the exterior and interior walls and structural members are portions of walls and structural members are portions of such walls that are approved non-combustible or such walls that are approved non-combustible or limited combustible materials. Other interior limited combustible materials. Other interior structural members, including columns, beams, structural members, including columns, beams, girders, trusses, arches, floors, and roofs shall be girders, trusses, arches, floors, and roofs shall be of solid or laminated wood with out concealed of solid or laminated wood with out concealed spaces.spaces.
STRUCTURE FIRE CONTROL INSTRUCTOR16
NFPA 1142NFPA 1142CONSTRUCTION CLASSIFICATIONCONSTRUCTION CLASSIFICATION Construction Class 0.75 Construction Class 0.75
Each Type IV component has a minimum Each Type IV component has a minimum dimension size that it must meet:dimension size that it must meet:
Floor columns not less than 8” all dimensionsFloor columns not less than 8” all dimensions
Roof columns not less than 6” by 8” Roof columns not less than 6” by 8”
Floor beams not less than 6” by 10”Floor beams not less than 6” by 10”
Roof beams not less than 4” by 6” Roof beams not less than 4” by 6”
STRUCTURE FIRE CONTROL INSTRUCTOR17
NFPA 1142NFPA 1142CONSTRUCTION CLASSIFICATIONCONSTRUCTION CLASSIFICATION Construction Class 1.0Construction Class 1.0
This classification is closely related to NFPA This classification is closely related to NFPA Type III (Ordinary) ConstructionType III (Ordinary) Construction
Type III DefinedType III DefinedConstruction that is considered to be the type Construction that is considered to be the type
that the exterior walls and structural members are that the exterior walls and structural members are of approved non-combustible or limited of approved non-combustible or limited combustible materials and interior structural combustible materials and interior structural members are entirely or partially of wood of members are entirely or partially of wood of smaller dimensions than required for Type IV smaller dimensions than required for Type IV construction construction
STRUCTURE FIRE CONTROL INSTRUCTOR18
NFPA 1142NFPA 1142CONSTRUCTION CLASSIFICATIONCONSTRUCTION CLASSIFICATION
Construction Class 1.5Construction Class 1.5This classification is closely related to NFPA This classification is closely related to NFPA
Type V ConstructionType V ConstructionType V DefinedType V Defined
Construction that is considered to be the type Construction that is considered to be the type that the exterior walls and structural members are that the exterior walls and structural members are made of wood or other approved combustible made of wood or other approved combustible material smaller than the requirements for Type material smaller than the requirements for Type IV constructionIV construction
STRUCTURE FIRE CONTROL INSTRUCTOR19
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
To determine the water supply you have To determine the water supply you have to gather the following information:to gather the following information:Structural Survey (Total Volume)Structural Survey (Total Volume)Construction Class NumberConstruction Class NumberOccupancy Hazard ClassOccupancy Hazard ClassExposures Exposures
This will bite you really bad, especially if you This will bite you really bad, especially if you burn down the neighbors barnburn down the neighbors barn
STRUCTURE FIRE CONTROL INSTRUCTOR20
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHOUTWITHOUT EXPOSURES EXPOSURES
Total Cubic feet divided by the OHCTotal Cubic feet divided by the OHC Multiply this by the CCNMultiply this by the CCN Then multiply that number by 1.5 for the Then multiply that number by 1.5 for the
NFPA 1403 required fifty percent reserveNFPA 1403 required fifty percent reserve This will give you the Minimum water in This will give you the Minimum water in
gallons needed for the structure.gallons needed for the structure. There will be no less than 2000 gallons of There will be no less than 2000 gallons of
water on site when burning a structure.water on site when burning a structure.
STRUCTURE FIRE CONTROL INSTRUCTOR21
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHOUTWITHOUT EXPOSURES EXPOSURES
50 ft X 24 ft Type V dwelling with two – 8 ft 50 ft X 24 ft Type V dwelling with two – 8 ft storiesstories
Pitched roof - 8 ft from attic floor to ridge pole Pitched roof - 8 ft from attic floor to ridge pole With pitched roofs use half the measured distance With pitched roofs use half the measured distance
from the attic floor to the ridge pole. from the attic floor to the ridge pole.
4 ft would be the number for this example4 ft would be the number for this example No exposures No exposures
STRUCTURE FIRE CONTROL INSTRUCTOR22
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHOUTWITHOUT EXPOSURES EXPOSURES
50 x 24 x 20 = 24,000 ft.50 x 24 x 20 = 24,000 ft.33 OHC 7OHC 7CCN 1.5CCN 1.524,000 ft.24,000 ft.33 / OHC 7 x CCN 1.5 x 1.5 = / OHC 7 x CCN 1.5 x 1.5 =
Gallons of water needed plus 50% Gallons of water needed plus 50% ReserveReserve
STRUCTURE FIRE CONTROL INSTRUCTOR23
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHOUTWITHOUT EXPOSURES EXPOSURES
50 x 24 x 20 = 24,000 ft.50 x 24 x 20 = 24,000 ft.33 OHC 7OHC 7CCN 1.5CCN 1.524,000 ft.24,000 ft.33 / OHC 7 x CCN 1.5 x 1.5 = / OHC 7 x CCN 1.5 x 1.5 =
77147714Gallons of water needed plus 50% Gallons of water needed plus 50% ReserveReserve
STRUCTURE FIRE CONTROL INSTRUCTOR24
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHOUTWITHOUT EXPOSURES EXPOSURES
PRACTICE:PRACTICE:125 ft X 100 ft Farm Equipment Storage125 ft X 100 ft Farm Equipment Storage1 – 14 ft story1 – 14 ft storyFlat roof Flat roof Type II ConstructionType II Construction
STRUCTURE FIRE CONTROL INSTRUCTOR25
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHOUTWITHOUT EXPOSURES EXPOSURES
125x 100 x 14 = 175,000 ft.125x 100 x 14 = 175,000 ft. 33
OHC 5OHC 5
CCN 0.75CCN 0.75
175,000 ft.175,000 ft.33/ OHC 5 x CCN 0.75 x 1.5 =/ OHC 5 x CCN 0.75 x 1.5 =
Gallons of water needed plus 50% Gallons of water needed plus 50% ReserveReserve
STRUCTURE FIRE CONTROL INSTRUCTOR26
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHOUTWITHOUT EXPOSURES EXPOSURES
125x 100 x 14 = 175,000 ft.125x 100 x 14 = 175,000 ft. 33
OHC 5OHC 5
CCN 0.75CCN 0.75
175,000 ft.175,000 ft.33/ OHC 5 x CCN 0.75 x 1.5 =/ OHC 5 x CCN 0.75 x 1.5 =
39,37539,375
Gallons of water needed plus 50% Gallons of water needed plus 50% ReserveReserve
STRUCTURE FIRE CONTROL INSTRUCTOR27
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
MINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES
Total Cubic feet divided by the OHCTotal Cubic feet divided by the OHC Multiple this by the CCNMultiple this by the CCN Then multiply that number by 1.5 for the Then multiply that number by 1.5 for the
NFPA 1403 fifty percent reserve that is NFPA 1403 fifty percent reserve that is requiredrequired
This will give you the Minimum water in This will give you the Minimum water in gallons needed for the structuregallons needed for the structure
STRUCTURE FIRE CONTROL INSTRUCTOR28
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
MINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES
Then multiply this number by 1.5 Then multiply this number by 1.5 This will give you the minimum water This will give you the minimum water
supply required for any structure with supply required for any structure with exposures.exposures.
3000 gallons of water is the minimum 3000 gallons of water is the minimum amount required for structures with amount required for structures with exposuresexposures
STRUCTURE FIRE CONTROL INSTRUCTOR29
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
MINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES
50 ft X 24 ft dwelling50 ft X 24 ft dwelling 2 – 8 ft stories2 – 8 ft stories Pitched roof - 8 ft from attic floor to ridge pole Pitched roof - 8 ft from attic floor to ridge pole
With pitched roofs use half the measured distance With pitched roofs use half the measured distance from the attic floor to the ridge pole. from the attic floor to the ridge pole.
4 ft would be the number for this example4 ft would be the number for this example Type V ConstructionType V Construction 25 ft X 12 ft exposure building 50’ from the C-25 ft X 12 ft exposure building 50’ from the C-
sideside
STRUCTURE FIRE CONTROL INSTRUCTOR30
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
MINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES
50 x 24 x 20 = 24,000 ft.50 x 24 x 20 = 24,000 ft.33
OHC 7OHC 7
CCN 1.5CCN 1.5
24,000 ft.24,000 ft.33 / OHC 7 x CCN 1.5 x 1.5 (Reserve) / OHC 7 x CCN 1.5 x 1.5 (Reserve) x 1.5 (Exposure)=x 1.5 (Exposure)=
Gallons of Water needed plus 50% forGallons of Water needed plus 50% forReserve and Exposure Reserve and Exposure
STRUCTURE FIRE CONTROL INSTRUCTOR31
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
MINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES
50 x 24 x 20 = 24,000 ft.50 x 24 x 20 = 24,000 ft.33
OHC 7OHC 7
CCN 1.5CCN 1.5
24,000 ft.24,000 ft.33 / OHC 7 x CCN 1.5 x 1.5 (Reserve) / OHC 7 x CCN 1.5 x 1.5 (Reserve) x 1.5 (Exposure)=x 1.5 (Exposure)=
11,57111,571
Gallons of Water needed plus 50% Gallons of Water needed plus 50% Reserve and Exposure Reserve and Exposure
STRUCTURE FIRE CONTROL INSTRUCTOR32
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
MINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES
PRACTICE:PRACTICE:125 ft X 100 ft Farm Equipment Storage125 ft X 100 ft Farm Equipment Storage1 – 14 ft story1 – 14 ft storyFlat roof Flat roof Non-Combustible ConstructionNon-Combustible Construction50ft X 25ft exposure building 25 feet from 50ft X 25ft exposure building 25 feet from
side Bside B
STRUCTURE FIRE CONTROL INSTRUCTOR33
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
MINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES
125x 100 x 14 = 175,000 125x 100 x 14 = 175,000 ft.ft.33 OHC 5OHC 5CCN 0.75CCN 0.75175,000 175,000 ft.ft.33 / OHC 5 x CCN 0.75 x / OHC 5 x CCN 0.75 x 1.5 (Reserve) x 1.5 (Exposure) =1.5 (Reserve) x 1.5 (Exposure) =
Gallons of water needed plus 50% reserveGallons of water needed plus 50% reserve
STRUCTURE FIRE CONTROL INSTRUCTOR34
NFPA 1142NFPA 1142CALCULATING WATER SUPPLYCALCULATING WATER SUPPLY
MINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES
125x 100 x 14 = 175,000 125x 100 x 14 = 175,000 ft.ft.33 OHC 5OHC 5CCN 0.75CCN 0.75175,000 175,000 ft.ft.33 / OHC 5 x CCN 0.75 x / OHC 5 x CCN 0.75 x 1.5 (Reserve) x 1.5 (Exposure) =1.5 (Reserve) x 1.5 (Exposure) =59,06259,062Gallons of water needed plus 50% reserve Gallons of water needed plus 50% reserve and exposure.and exposure.
STRUCTURE FIRE CONTROL INSTRUCTOR35
NFPA 1142NFPA 1142Pre-Calculated ValuesPre-Calculated Values
You can refer to NFPA 1142 and find the You can refer to NFPA 1142 and find the pre-calculated numbers.pre-calculated numbers.This works great for an estimated numberThis works great for an estimated numberIt is still best to calculate the numbers It is still best to calculate the numbers
yourself.yourself.
STRUCTURE FIRE CONTROL INSTRUCTOR36
Water Supply LayoutWater Supply Layout
STRUCTURE FIRE CONTROL INSTRUCTOR37
REVIEW ENABLING OBJECTIVESREVIEW ENABLING OBJECTIVES
We have identified & described the purpose of We have identified & described the purpose of NFPA 1142.NFPA 1142. We have identified & described the occupancy We have identified & described the occupancy hazard classifications found in NFPA 1142.hazard classifications found in NFPA 1142. We have identified & described the We have identified & described the construction classification numbers found in construction classification numbers found in NFPA 1142.NFPA 1142.We have determined minimum water supply We have determined minimum water supply requirements, including a 50% reserve, for requirements, including a 50% reserve, for conducting live fire training evolutions in a conducting live fire training evolutions in a structure.structure.
STRUCTURE FIRE CONTROL INSTRUCTOR38
END OF SECTIONEND OF SECTION
END OF SECTION END OF SECTION ON ON
NFPA 1142 NFPA 1142 FAMILIARIZATIONFAMILIARIZATION