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FIRE ESCAPES

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Fire escapes can and do collapse, Many are old and lack proper maintenance, ... industrial buildings, schools, apartments houses, hotels, wood frame dwellings. – PowerPoint PPT presentation

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Title: FIRE ESCAPES


1
FIRE ESCAPES
2
  • Fire escapes can be found on many multi-story
    structures, such as
  • commercial buildings,
  • industrial buildings,
  • schools,
  • apartments houses,
  • hotels,
  • wood frame dwellings.
  • While designed for a buildings occupants as an
    emergency egress, they are actually used more by
    FFs.

3
  • Provides a method of escape in the event of a
    fire or other emergency when stairs inside the
    building are inaccessible,
  • A fire escape consists of a number of horizontal
    platforms, one at each story of a building, with
    ladders or stairs connecting them.
  • The platform and stairs are usually open
    gratings, to prevent the buildup of ice, snow,
    and leaves

4
history
5
HISTORY
  • One of the first fire escapes of any type was
    invented in 1784 in England. Daniel Maseres,
    invented a machine called a fire escape, when
    fastened to a window, would enable anyone to
    descend to the street without injury.
  • On 2/2/1860, a fatal fire in a NYC wood framed
    tenement, killing 10 people, led to the first
    egress law in NYC.
  • In 1867, NYS passed a public law, The First
    House Tenement House Act requiring fire escapes
    and every room must have a window.

6
HISTORY
  • In 1887, an American inventor named Anna
    Connelly registered a patent for the exterior
    steel staircase that would serve as the prototype
    for the modern metal fire escape. Connellys
    invention introduced a cost-effective way to add
    safety to both existing buildings and new
    construction in the 1900s. It became mandatory
    under the building codes that cities began to
    adopt at the turn of the century.
  • Although fire escapes were still being
    constructed after 1930, they were no longer
    recognized as a safe, acceptable means of egress.

7
Codes
8
CODES
  • Fire escapes are not allowed to be installed on
    new building construction,
  • Interior exit stairways or ramps shall be
    provided and enclosed with fire barriers that
    have a fire resistance rating,
  • Existing fire escapes are accepted means of
    egress from existing buildings,

9
CODES
  • New fire escapes can be installed on existing
    buildings only where exterior stairs cant be
    utilized due to limits of lot lines, sidewalks,
    alleys or roads at grade level. (NYS Existing
    Building Code, Section 303.1.3)
  • Made of metal or approved noncombustible
    material. Wood can be used on Type V (wood frame)
    construction.

10
Definitions
11
DEFINITIONS
  • FIRE ESCAPE
  • an emergency means of egress from a building
    consisting of metal balconies on the outside of a
    building connected by ladders to each other and
    to the ground. Some fire escapes have a ladder
    from the top floor balcony to the roof.
  • DROP LADDER
  • a vertical ladder normally held in the "up"
    position at the second floor balcony of the fire
    escape by a hook. When this ladder is to be used,
    the hook is released and the drop ladder is
    lowered or dropped to the ground.

12
DEFINITIONS
  • GOOSENECK LADDER
  • a vertical ladder, the side rails of which are
    curved at the top, used between the top floor
    balcony of a fire escape and the roof.
  • PARTY WALL BALCONY
  • a structure built as an emergency means of
    egress from a building which will afford
    horizontal access to an adjoining building or
    apartment separated by a fire wall. They do not
    have ladders to ascend or descend from floor to
    floor or to the roof.

13
DEFINITIONS
  • EXTERIOR STAIRWAY
  • a semi-enclosed means of egress serving all
    floors with landings at each floor. Entry is
    through a doorway instead of a window.

14
Types ofFIRE ESCAPES
15
  • There are many designs, variations and styles of
    fire escapes, but they can be categorized into
    three types
  • the Standard,
  • the Party Wall Balcony and
  • the Exterior Stairway.

16
THE STANDARD FIRE ESCAPE AND COMPONENTS
17
  • The STANDARD
  • most common found, normally accessed by windows,
  • metal balconies with metal ladders,
  • metal parts usually connected with bolts or
    rivets and some were welded,
  • width 3-4 ft., with stairway angles 45, 60, 75
    degrees or steeper,
  • some can be 50 to more than 100 yrs old.

18
STANDARD FIRE ESCAPE COMPONENTS
  • The DROP LADDER
  • a vertical ladder fixed to the front or side of
    the lowest balcony,
  • held in the up position at the second balcony by
    a hook,
  • lowered by lifting off the hook and letting it
    drop to the ground,
  • are heavy and can come free of track guides.

19
STANDARD FIRE ESCAPE COMPONENTS
  • The GOOSENECK LADDER
  • a vertical ladder with cured rails at the top,
  • normally used from the top floor balcony to the
    roof,
  • normally lagged into roof joist,
  • sometimes have meal supports tied to parapet or
    roof joists for support.

20
STANDARD FIRE ESCAPE COMPONENTS
  • The COUNTER-BALANCED STAIRWAY
  • supported on a pivot, balanced in a horizontal
    position by heavy counter-balancing weights,
  • weights are either attached to one end of the
    stairway or held by a steel cable against the
    side of the building,
  • located directly below or adjacent to the lowest
    landing,
  • more likely found on commercial buildings.

21
COUNTER-BALANCED STAIRWAY
  • heavy metal or concrete weight attached,
  • can have wall mounted pulley system counter
    weight,
  • age/rust can cause brackets or cables holding
    counter weights to fall,
  • designed to gradually go down as person walks
    down.

22
THE PARTY WALLBALCONY
23
  • The PARTY WALL BALCONY
  • a fire wall separates the buildings,
  • may connect two or more buildings,
  • mostly found in old tenement areas,
  • no ladders or stairs connecting the balconies to
    allow floor to floor movement.

Fire Wall
No Gooseneck Ladder
Fire Wall
No stairs or ladders between floors
24
PARTY WALL BALCONY
  • Occupants escaping fire conditions
  • occupants use the balcony to enter adjoining
    building(s), (essentially a horizontal exit),
  • entry into adjoining building(s) may be hampered
    by window gates or other security measures,
  • may have to be removed by ground and/or aerial
    ladders,
  • may become overcrowded very quickly, causing
    overloading and possible collapse.

25
PARTY WALL BALCONY
  • FD operations
  • can not be used to go from floor to floor for
    VES,
  • can not be used to gain access to the roof,
  • can not be used to stretch hoselines,
  • may be found in the rear of buildings making it
    difficult to remove occupants,
  • adjoining building may be vacant or boarded up
    hindering occupant escape, contact your building
    dept.
  • survey your community to ascertain if any are
    within your response area.

26
March 1912
Front Party Wall balcony connecting five
buildings 260-268 Elizabeth Street, NYC, NY.
Same building almost 100 years later
27
Old photo of Party Wall Balcony at the rear of a
building
28
EXTERIOR STAIRWAYS
29
  • The EXTERIOR STAIRWAY
  • often found where large number of people are
    within the building, (manufacturing, schools,
    public assemblies)
  • some have screened fence at stairway,
  • there also may be a cover over the platform and
    stairs,
  • also exposed to the elements,
  • entry normally through doorway instead of a
    window.

30
Exterior Stairways come in many forms
31
Fire escape structural hazards
32
FIRE ESCAPE STRUCTURAL HAZARDS
  • May have been present for more than 50 years,
  • Exposed to the elements and weakened by
    corrosion,
  • Neglect or improper maintenance making them
    extremely dangerous.

33
Broken, missing steps, the most severe hazard to
firefighters
34
Open mortar joints or cracked bricks at the
connection points
35
Fire department operations
36
FD OPERATIONS ON FIRE ESCAPES
  • Can be used to gain access to upper floors for
    Vent, Entry and Search (VES),
  • If gooseneck ladder is present, can be used to
    access the roof,
  • Hoselines can be stretched up the fire escape,
  • Use FD ladders if uncertain about drop ladder or
    stairs integrity,
  • Use FD ladders to ease over-crowding on the fire
    escape.

37
Raise 1st ladder to first balcony opposite of
drop ladder
Raise 2nd ladder to second balcony
  • To ease fire escape overcrowded with people

38
Are there permits for this installation?
How is it secured to the building?
They are even be found on residential wood frame
dwellings
39
No gooseneck ladder
Multiple dwelling exposure 3 or C side
Notice vertical ladder instead of stairs from
balcony to balcony
40
Hook
Same multiple dwelling exposure 2 or B side
Typical stairs
41
Something different
Twin fire escapes in the French Quarter
42
SAFETY CONCERNS
43
SAFETY CONCERNS ABOUT FIRE ESCAPES
  • Broken steps cause most FF injuries,
  • climb the steps smoothly, place your feet close
    to the side of the step, continue to grip some
    part of the railing,
  • Always face the stairs when ascending or
    descending,
  • Drop ladder not within the tracks and falling to
    the ground,

44
SAFETY CONCERNS ABOUT FIRE ESCAPES
  • Ice conditions during the winter,
  • Dont lean against the balcony railing,
  • Shake the gooseneck ladder before ascending or
    descending, to make sure it is secure,
  • Venting debris, especially glass can be as
    slippery as ice,
  • When lowering the drop ladder, stand beneath the
    fire escape.

45
SAFETY CONCERNS ABOUT FIRE ESCAPES
  • Items such as flower pots, barbecues, etc., can
    fall injuring the FF, code violation, notify
    inspector,
  • Dont stand beneath counterbalanced stairs or
    counterweight, have been known to fall,
  • Climbing a gooseneck ladder is dangerous when
    carrying tools or a saw, use a strap or rope,
  • Keep one hand free while ascending or descending
    to grip the fire escape,

46
A Tragedy
47
On July 22, 1975 in Boston, a 19-year-old and her
2-year-old god-daughter were trapped in a burning
building. A firefighter, Robert ONeill, shielded
them from the flames as a fire ladder inched
closer. As the firefighter climbed on the
ladder, the fire escape collapsed. Although the
woman died from her injuries, the infant survived.
48
summary
49
SUMMARY
  • Fire escapes can and do collapse,
  • Many are old and lack proper maintenance,
  • One missing step should serve as a warning that
    more can be missing and to the condition of the
    entire fire escape,
  • Fire escape inspection should be a high
    priority, if you observe something wrong, report
    it,
  • IC must be informed if there is a party wall
    balcony in the rear of the building,

50
Prepared by Thomas Bartsch Chief Fire Inspector,
(ret)
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