1142 familiarization

STRUCTURE FIRE CONTROL INSTRUCTORSTRUCTURE FIRE CONTROL INSTRUCTOR 11

NFPA 1142NFPA 1142FAMILIARIZATIONFAMILIARIZATION

TERMINAL PERFORMANCE TERMINAL PERFORMANCE OBJECTIVEOBJECTIVE

The student shall determine the The student shall determine the minimum water supply necessary minimum water supply necessary

to conduct live fire training to conduct live fire training evolutions in an acquired evolutions in an acquired

structure or training center burn structure or training center burn building, according to building, according to NFPA 1142, NFPA 1142,

Standard on Water Supplies for Standard on Water Supplies for Suburban and Rural Fire Fighting. Suburban and Rural Fire Fighting.


ENABLING OBJECTIVESENABLING OBJECTIVES

Identify & describe the purpose of NFPA Identify & describe the purpose of NFPA 1142.1142.

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 classification numbers found in NFPA 1142.1142.

Determine minimum water supply Determine minimum water supply requirements, including a 50% reserve, requirements, including a 50% reserve, for conducting live fire training evolutions for conducting live fire training evolutions in a structure.in a structure.

PURPOSE OF NFPA PURPOSE OF NFPA 11421142

NFPA 1142, Standard on NFPA 1142, Standard on Water Supplies for Suburban Water Supplies for Suburban

and Rural Fire Fighting and Rural Fire Fighting contains formulae for contains formulae for

determining the minimum determining the minimum amount of water that must amount of water that must be available on site when be available on site when conducting structure fire conducting structure fire

control training.control training.


NFPA 1142NFPA 1142

WATER SUPPLYWATER SUPPLY Instructor-in-charge shall ensure Instructor-in-charge shall ensure

that: that: the onsite water meets the required or the onsite water meets the required or

needed water supply for the given needed water supply for the given structurestructure

water supply meets requirements of water supply meets requirements of NFPA 1142NFPA 1142

a minimum reserve of water be a minimum reserve of water be available for each evolutionavailable for each evolution

attack lines and backup line are feed attack lines and backup line are feed from separate water sourcesfrom separate water sources


NFPA 1142NFPA 1142

WATER SUPPLYWATER SUPPLY Understanding NFPA 1142 and Understanding NFPA 1142 and

how it works with NFPA 1403how it works with NFPA 1403What information do you need to What information do you need to

gather to determine the needed gather to determine the needed water for the structure?water for the structure?Occupancy Hazard ClassificationOccupancy Hazard ClassificationConstruction ClassificationConstruction ClassificationStructural DimensionsStructural DimensionsExposuresExposures


NFPA 1142NFPA 1142OCCUPANCY HAZARD OCCUPANCY HAZARD

CLASSESCLASSES 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 Includes the following occupancy

types:types:Cereal millsCereal millsExplosives manufacturing/storageExplosives manufacturing/storageSaw millsSaw millsPlastic processing facilitiesPlastic processing facilities




Considered High Hazard OccupanciesConsidered High Hazard OccupanciesThese structures shall be considered These structures shall be considered

an exposure no mater what there sizean exposure no mater what there sizeIncludes the following occupancy Includes the following occupancy

types:types:Commercial barns and stablesCommercial barns and stablesBuilding materials supply storageBuilding materials supply storageDepartment storesDepartment storesTheatersTheaters




Considered Moderate Hazard Considered Moderate Hazard OccupanciesOccupancies

The quantity and combustibility of The quantity and combustibility of contents develop at moderate rates.contents 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




Considered Low Hazard OccupanciesConsidered Low Hazard OccupanciesThe quantity and combustibility of The quantity and combustibility of

contents develop at low ratescontents develop at low ratesIncludes the following occupancy Includes the following occupancy

types:types:ChurchesChurchesMunicipal buildingsMunicipal buildingsService stationsService stations




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 Includes the following occupancy

types:types:ApartmentsApartmentsDormitoriesDormitoriesHotelsHotelsSchoolsSchoolsPrivate dwellingPrivate dwelling


NFPA 1142NFPA 1142CONSTRUCTION CONSTRUCTION CLASSIFICATIONCLASSIFICATION

Construction Class 0.5Construction Class 0.5This classification is closely related This classification is closely related

to NFPA Type I Constructionto NFPA Type I ConstructionType I DefinedType I Defined

Structural members include walls, Structural members include walls, columns, girders, trusses, arches, floor, columns, girders, trusses, arches, floor, and roofs that are made of approved and roofs that are made of approved non-combustible or limited combustible non-combustible or limited combustible materialsmaterials



Construction Class 0.5Construction Class 0.5Each component has a fire rating Each component has a fire rating

that it must meet:that it must meet:Exterior Bearing Walls – 4 hour ratingExterior Bearing Walls – 4 hour ratingInterior Bearing Walls – 3 to 4 hour Interior Bearing Walls – 3 to 4 hour

ratingratingBeams, Girders, trusses, and Arches – 3 Beams, Girders, trusses, and Arches – 3

to 4 hour ratingto 4 hour ratingFloors – 3 hour ratingFloors – 3 hour ratingRoofs – 2 hour ratingRoofs – 2 hour rating



Construction Class 0.75Construction Class 0.75This classification is closely related to This classification is closely related to

NFPA Type II and IV (Heavy Timber) NFPA Type II and IV (Heavy Timber) ConstructionConstruction

Type II DefinedType II DefinedStructural members include walls, columns, Structural members include walls, columns,

girders, trusses, arches, floor, and roofs girders, trusses, arches, floor, and roofs that are made of approved non-combustible that are made of approved non-combustible or limited combustible materials and shall or limited combustible materials and shall not have a fire resistive rating less than not have a fire resistive rating less than those specified in NFPA 1142 table 6.2.2those specified in NFPA 1142 table 6.2.2



Construction Class 0.75Construction Class 0.75Type IV DefinedType IV Defined

This construction is considered to be This construction is considered to be construction in which the exterior and construction in which the exterior and interior walls and structural members interior walls and structural members are portions of such walls that are are portions of such walls that are approved non-combustible or limited approved non-combustible or limited combustible materials. Other interior combustible materials. Other interior structural members, including columns, structural members, including columns, beams, girders, trusses, arches, floors, beams, girders, trusses, arches, floors, and roofs shall be of solid or laminated and roofs shall be of solid or laminated wood with out concealed spaces.wood with out concealed spaces.



Construction Class 0.75 Construction Class 0.75 Each Type IV component has a Each Type IV component has a

minimum dimension size that it minimum dimension size that it must meet:must meet:

Floor columns not less than 8” all Floor columns not less than 8” all dimensionsdimensions

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”



Construction Class 1.0Construction Class 1.0This classification is closely related to This classification is closely related to

NFPA Type III (Ordinary) ConstructionNFPA Type III (Ordinary) ConstructionType III DefinedType III Defined

Construction that is considered to be the Construction that is considered to be the type that the exterior walls and structural type that the exterior walls and structural members are of approved non-combustible members are of approved non-combustible or limited combustible materials and or limited combustible materials and interior structural members are entirely or interior structural members are entirely or partially of wood of smaller dimensions partially of wood of smaller dimensions than required for Type IV construction than required for Type IV construction



Construction Class 1.5Construction Class 1.5This classification is closely related This classification is closely related

to NFPA Type V Constructionto NFPA Type V ConstructionType V DefinedType V Defined

Construction that is considered to be Construction that is considered to be the type that the exterior walls and the type that the exterior walls and structural members are made of wood structural members are made of wood or other approved combustible material or other approved combustible material smaller than the requirements for Type smaller than the requirements for Type IV constructionIV construction


NFPA 1142NFPA 1142CALCULATING WATER CALCULATING WATER

SUPPLYSUPPLY To determine the water supply To determine the water supply

you have to gather the following you have to gather the following information: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 This will bite you really bad, especially if you burn down the neighbors barnif you burn down the neighbors barn



SUPPLYSUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHOUTWITHOUT

EXPOSURESEXPOSURES 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 Then multiply that number by 1.5 for

the NFPA 1403 required fifty percent the NFPA 1403 required fifty percent reservereserve

This will give you the Minimum water This will give you the Minimum water in gallons needed for the structure.in gallons needed for the structure.

There will be no less than 2000 There will be no less than 2000 gallons of water on site when burning gallons of water on site when burning a structure.a structure.




EXPOSURESEXPOSURES 50 ft X 24 ft Type V dwelling with two 50 ft X 24 ft Type V dwelling with two – 8 ft stories– 8 ft stories

Pitched roof - 8 ft from attic floor to Pitched roof - 8 ft from attic floor to ridge pole ridge pole With pitched roofs use half the measured With pitched roofs use half the measured

distance from the attic floor to the ridge distance from the attic floor to the ridge pole. pole.

4 ft would be the number for this 4 ft would be the number for this exampleexample

No exposures No exposures




EXPOSURESEXPOSURES

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 / OHC 7 x CCN 1.5 x

1.5 =1.5 =

Gallons of water needed plus Gallons of water needed plus 50% 50% ReserveReserve




EXPOSURESEXPOSURES

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 / OHC 7 x CCN 1.5 x

1.5 =1.5 = 77147714





EXPOSURESEXPOSURES PRACTICE:PRACTICE:

125 ft X 100 ft Farm Equipment 125 ft X 100 ft Farm Equipment StorageStorage

1 – 14 ft story1 – 14 ft storyFlat roof Flat roof Type II ConstructionType II Construction




EXPOSURESEXPOSURES125x 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 / OHC 5 x CCN 0.75 x 1.5 =1.5 =





EXPOSURESEXPOSURES125x 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 / OHC 5 x CCN 0.75 x 1.5 =1.5 =

39,37539,375




SUPPLYSUPPLYMINIMUM WATER SUPPLY MINIMUM WATER SUPPLY WITHWITH EXPOSURES EXPOSURES

Total Cubic feet divided by the Total Cubic feet divided by the OHCOHC

Multiple this by the CCNMultiple this by the CCN Then multiply that number by 1.5 Then multiply that number by 1.5

for the NFPA 1403 fifty percent for the NFPA 1403 fifty percent reserve that is requiredreserve that is required

This will give you the Minimum This will give you the Minimum water in gallons needed for the water in gallons needed for the structurestructure




Then multiply this number by 1.5 Then multiply this number by 1.5 This will give you the minimum This will give you the minimum

water supply required for any water supply required for any structure with exposures.structure with exposures.

3000 gallons of water is the 3000 gallons of water is the minimum amount required for minimum amount required for structures with exposuresstructures with 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 Pitched roof - 8 ft from attic floor to ridge

pole pole With pitched roofs use half the measured With pitched roofs use half the measured

distance from the attic floor to the ridge pole. distance 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 25 ft X 12 ft exposure building 50’ from

the C-sidethe C-side




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 / OHC 7 x CCN 1.5 x 1.5 (Reserve) 1.5 (Reserve) x 1.5 (Exposure)=x 1.5 (Exposure)=

Gallons of Water needed plus Gallons of Water needed plus 50% for50% for Reserve and Exposure Reserve and Exposure




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 / OHC 7 x CCN 1.5 x 1.5 (Reserve) 1.5 (Reserve) x 1.5 (Exposure)=x 1.5 (Exposure)=

11,57111,571

Gallons of Water needed plus Gallons of Water needed plus 50% 50% Reserve and Exposure Reserve and Exposure




PRACTICE:PRACTICE:125 ft X 100 ft Farm Equipment 125 ft X 100 ft Farm Equipment

StorageStorage1 – 14 ft story1 – 14 ft storyFlat roof Flat roof Non-Combustible ConstructionNon-Combustible Construction50ft X 25ft exposure building 25 50ft X 25ft exposure building 25

feet from side Bfeet from side B




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 1.5 (Reserve) x 1.5 (Exposure) =(Exposure) =

Gallons of water needed plus Gallons of water needed plus 50% reserve50% reserve




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 1.5 (Reserve) x 1.5 (Exposure) =(Exposure) =

59,06259,062Gallons of water needed plus Gallons of water needed plus

50% reserve 50% reserve and exposure.and exposure.


NFPA 1142NFPA 1142Pre-Calculated ValuesPre-Calculated Values

You can refer to NFPA 1142 and You can refer to NFPA 1142 and find the pre-calculated numbers.find the pre-calculated numbers.This works great for an estimated This works great for an estimated

numbernumberIt is still best to calculate the It is still best to calculate the

numbers yourself.numbers yourself.


Water Supply LayoutWater Supply Layout


REVIEW ENABLING REVIEW ENABLING OBJECTIVESOBJECTIVES

We have identified & described the We have identified & described the purpose of NFPA 1142.purpose of NFPA 1142. We have identified & described the We have identified & described the occupancy hazard classifications found occupancy hazard classifications found in NFPA 1142.in NFPA 1142. We have identified & described the We have identified & described the construction classification numbers construction classification numbers found in NFPA 1142.found in NFPA 1142.We have determined minimum water We have determined minimum water supply requirements, including a 50% supply requirements, including a 50% reserve, for conducting live fire training reserve, for conducting live fire training evolutions in a structure.evolutions in a structure.


END OF SECTIONEND OF SECTION

END OF SECTION END OF SECTION ON ON

NFPA 1142 NFPA 1142 FAMILIARIZATIOFAMILIARIZATIO

NN

1142 familiarization

Education