1142 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.


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.


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


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


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



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



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



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



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


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



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


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



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.


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”



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



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


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


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.



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



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



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



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



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 =




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




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




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




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




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




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




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




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




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.


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.


Water Supply LayoutWater Supply Layout


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.


END OF SECTIONEND OF SECTION

END OF SECTION END OF SECTION ON ON

NFPA 1142 NFPA 1142 FAMILIARIZATIONFAMILIARIZATION

Education

1142 familiarization