Ch17 Pre-incident Planning Flashcards
The entire process of gathering and evaluating information, developing procedures based on that information, and ensuring that the information remains current
Preincident Planning
4 functions of preincident planning
- Developing positive relationships with building owners/occupants
- Conducting the preincident survey
- Managing preincident data
- Developing preincident plans
Defines the type of construction that is used to build structures that will be used for specific purposes
Building Codes
Recommended Practice for Preincident Planning (2003)
NFPA 1620
Currently, model building codes are developed by two major organizations
NFPA and International Code Council (ICC)
Standard on Types of Building Construction (2006)
NFPA 220
Type IA
- 3hr fire rating of structural frame and load bearing walls
- 2hr fire rating on floors
- 1.5hr fire rating on roofs
Type IB
- 2hr fire rating of structural frame and load bearing walls
- 2hr fire rating on floors
- 1hr fire rating on roofs
Type IIA
Requires noncombustible fire-resistive materials similar to Type I building insofar as the structural elements must be of steel, concrete, or masonry
Type IIB
Requires approved noncombustible materials, but the materials used may have no assigned fire rating
Type IIIA
Requires materials that will provide a 1hr fire resistance construction throughout the structure
Type IIIB
Lacks the 1hr fire resistance construction requirement
Type IV
- No concealed spaces
- 2hr or less fire rating on exterior walls
- Wooden columns min 6x8”
- Floor framing min 6x10”
- Roof framing min 6x8” for first half and min 6x6” for top half
Type VA
1hr fire rating for all structural elements except for non-bearing interior walls and partitions
Type VB
May have non fire rated structural elements
Types of roofs (5)
- Flat
- Pitched
- Arched
- Concrete
- Metal
Type of roof composed of relatively short timbers of uniform length, beveled and bored at the ends where they are bolted together at an angle to form an interlocking network of structural timbers
Truss-less Arched Roof
- or Lamella Roof
A popular, lightweight material made of gypsum plaster and Portland cement mixed with fillers such as perlite, vermiculite, or sand
Lightweight Concrete
Type of construction where plywood panels are supported by purlins between laminated wooden beams or gusseted wooden trusses that span from outside wall to outside wall
Lightweight Construction
Conventional subfloor construction has been replaced by…
Open web trusses or wooden I-beams
Purpose of preincident survey
To provide emergency response personnel with information about the occupancy that they will need should a fire or other emergency develop on the premises
A rough drawing of a building that is prepared during the facility survey
Field Sketch
The bulk of fuel available to burn and generally refers to the contents of a building
Fuel Load
Standard for Smoke and Heat Venting
NFPA 204 (2002/2006)
Release heat and smoke to the outside through vents that work automatically and are placed at the highest point of a roof or wall to limit the spread of fire within a building
Automatic roof and wall vents
Release heat and smoke from atriums
Atrium vents
Release heat and smoke to the outside from square or rectangular structures that usually penetrate the roofs of single story buildings but may be found on high rise buildings as well
Monitors
Ventilate heat and smoke in the event of fire. These equipped with thermoplastic panels or ordinary window glass can act as automatic vents because the temperature of a fire will melt the plastic or break the glass
Skylights
Consist of fire resistive half walls that extend down from the underside of a roof to limit the horizontal spread of heat and smoke by confining them to a relatively small area directly over their sources
Curtain Boards or Draft Curtains
Three major tasks of any preincident plan
- Gather the data
- Enter the data into databases
- Keep the data current
Indicate how buildings are situated with respect to other buildings and streets in the area
Plot plans
Show the layout of individual floors, subfloors, and roofs
Floor plans
Show side views of structures that depict the number of floors in buildings and grades of the surrounding ground
Elevations
