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Title: LOUISIANA DEPARTMENT OF PUBLIC SAFETY AND CORRECTIONS OFFICE OF STATE FIRE MARSHAL, CODE ENFORCEMENT AND BUILDING SAFETY


1
LOUISIANA DEPARTMENT OF PUBLIC
SAFETY AND CORRECTIONS OFFICE OF
STATE FIRE MARSHAL, CODE ENFORCEMENT AND
BUILDING SAFETY

2002 NFPA 138.14 SPECIAL
SITUATIONS REGARDING HEAD LOCATIONS IN
SPRINKLERED BUILDINGS JEAN CARTER,
RA ARCHITECT / ENGINEER SUPERVISOR JCARTER_at_DPS.STA
TE.LA.US T 225 925 6970 OFFICE OF STATE FIRE
MARSHAL, CODE ENFORCEMENT BUILDING SAFETY 8181
INDEPENDENCE BLVD. BATON ROUGE LA
70806 T 800 256 5452 F 225 925 4414
WWW.DPS.STATE.LA.US/SFM
2
2002 NFPA 138.14 SPECIAL SITUATIONS 8.14.1
Concealed Spaces 8.14.2 Vertical Shafts 8.14.3
Stairways 8.14.4 Vertical Openings 8.14.5
Elevator Hoistways 8.14.6 Spaces Under Ground
Floors, Exterior Docks, And Platforms 8.14.7
Exterior Roofs Or Canopies 8.14.8 Dwelling
Units 8.14.9 Library Stack Rooms 8.14.10
Electrical Equipment
8.14.11 Industrial Ovens And Furnaces 8.14.12
Open Grid Ceilings 8.14.13 Drop Out
Ceilings 8.14.14 Old Style Sprinklers 8.14.15
Stages 8.14.16 Provision For Flushing
Systems 8.14.17 Stair Towers 8.14.18 Return
Bends 8.14.19 Piping To Sprinklers Below
Ceilings 8.14.20 Dry Pipe Underground 8.14.21
System Subdivision 8.14.22 Spaces Above Ceilings
Annex A is not a part of the requirements of this
NFPA document but is included for informational
purposes only. This annex contains explanatory
material, numbered to correspond with the
applicable text paragraphs. Handbook Commentary
provides the history and other background
information for specific paragraphs ion the
standard. The commentary is insighteful and
takes the readers behind the scenes into the
reasons underlying the requirements.
3
  • A concealed space, regarding the intent of the
    code, is an unoccupied cavity within a
  • building, whose area is typically used for
    concealment of utility piping or wiring.
  • Examples of concealed spaces include ceiling
    cavities, wall cavities, floor cavities,
  • plumbing / electrical / duct shafts, canopy /
    walkway ceiling cavities, false Mansard
  • roof canopies.
  • 8.14.1 Concealed Spaces
  • C-8.14.1.1 Concealed spaces, unless protected,
    can provide an unabated passage for fire
  • spread throughout a building. Paragraph 8.14.1
    applies to those portions of a building that
  • Have construction or finish materials of a
    combustible nature, or
  • Are used for the storage of combustible
    materials, or
  • Contain combustibles associated with building
    system features such as large quantities of
  • computer wiring or nonmetallic piping.

4
A concealed space, regarding the intent of the
code, is an unoccupied cavity within a building,
whose area is typically used for concealment of
utility piping or wiring. Examples of concealed
spaces include ceiling cavities, wall cavities,
floor cavities, plumbing / electrical / duct
shafts and chases . . .
5
. . . canopy / walkway ceiling cavities, false
Mansard, etc., roof cavities.
6
8.14.1.1 Concealed Spaces Requiring Sprinkler
Protection. All concealed spaces enclosed
wholly or partly by exposed combustible
construction shall be protected by sprinklers
except in concealed spaces where sprinklers are
not required to be installed by 8.14.1.2.1
through 8.14.1.2.15.
7
8.14.1.1 Concealed Spaces Requiring Sprinkler
Protection. All concealed spaces enclosed
wholly or partly by exposed combustible
construction shall be protected by sprinklers
except in concealed spaces where sprinklers are
not required to be installed by 8.14.1.2.1
through 8.14.1.2.15.
  • Therefore, by default, the codes intent is to
  • Acknowledge only exposed combustible
    construction/finishes in the concealed space when
    determining requirement for sprinkler protection
    within the concealed space.
  • Allow omission of sprinkler protection within
    concealed spaces with exposed limited-combustible
    and non-combustible finishes.

8
8.14.1.1 Concealed Spaces Requiring Sprinkler
Protection. All concealed spaces enclosed
wholly or partly by exposed combustible
construction shall be protected by sprinklers
except in concealed spaces where sprinklers are
not required to be installed by 8.14.1.2.1
through 8.14.1.2.15.
Re-roof project creating combustible concealed
space by forming roof cavity between old,
exposed, combustible tar and gravel roof and new
roof.
9
8.14.1.2 Concealed Spaces Not Requiring Sprinkler
Protection. 8.14.1.2.1 Noncombustible and
limited combustible concealed spaces with no
combustible loading having no access shall not
require sprinkler protection. The space shall be
considered a concealed space even with small
openings such as those used as return air for a
plenum.
10
8.14.1.2.2 Noncombustible and limited
combustible concealed spaces with limited access
and not permitting occupancy or storage of
combustibles shall not require sprinkler
protection. The space shall be considered a
concealed space even with small openings such as
those used as return air for a plenum.
11
3.3.14 Limited Combustible Material. A building
construction material that does not comply with
the definition of noncombustible material that,
in the form in which it is used, has a potential
heat value not exceeding 3500 Btu per lb (8141
kJ/kg) (see NFPA 359, Standard Test Method for
Potential Heat of Building Materials), and that
complies with either of the following, (a) or
(b). Materials subject to increase in
combustibility or flame spread rating beyond the
limits herein established through the effects of
age, moisture, or other atmospheric condition
shall be considered combustible. (a) Materials
having a structural base of noncombustible
material, with a surfacing not exceeding a
thickness of 1/8 in. (3.2 mm) that has a flame
spread rating not greater than 50. (b) Materials,
in the form and thickness used, other than as
described in (a), having neither a flame spread
rating greater than 25 nor evidence of continued
progressive combustion and of such composition
that surfaces that would be exposed by cutting
through the material on any plane would have
neither a flame spread rating greater than 25 nor
evidence of continued progressive
combustion. 3.3.16 Noncombustible Material. A
material that, in the form in which it is used
and under the conditions anticipated, will not
ignite, burn, support combustion, or release
flammable vapors when subjected to fire or heat.
Materials that are reported as passing ASTM E
136, Standard Test Method for Behavior of
Materials in a Vertical Tube Furnace at 750C,
shall be considered noncombustible materials.

12
SEE NEXT 2 PAGES

13
  • Noncombustibility
  • In the National Fire Protection Associations
    NFPA 101 Code for Safety to Life
  • from Fire in Buildings and Structures, a
    noncombustible material is defined as
  • a material that, "in the form in which it is used
    and under the conditions
  • anticipated, will not aid combustion or add
    appreciable heat to an ambient
  • fire." Materials are tested for noncombustibility
    in ASTM E 136 Standard Test
  • Method for Behavior of Materials in a Vertical
    Tube Furnace at 750 C. The
  • test exposes small samples of the material to a
    stream of air heated to 750 C
  • (1382F). The material is deemed noncombustible
    if
  • Sample temperatures at no time exceed 780 C
    (1436 F).
  • There is no flaming after 30 seconds.
  • Once the sample loses 50 of its weight, theres
    no flaming and sample temperatures never exceed
    750 C, (1382 F). ASTM E 136 is an extremely
    strict test and under its criterion, few building
    materials qualify as noncombustible. Two USG
    Interiors products which do are CERAMIC HERITAGE
    and most THERMAFIBER insulation products.


14
In regard to gypsum wallboard, the products
paper facing prevents it from passing ASTM E 136.
However, because it does have a demonstrated
ability to perform in fire rated assemblies, the
NFPA has placed it in a special classification
called limited-combustible. This category
distinguishes gypsum wallboard from other, more
highly combustible products. To qualify as
limited-combustible, a material must have a
noncombustible structural base or core, a surface
less than 1/8 in. (0.3 cm) thickness and a
flame-spread rating of 50 or less. This last
requirement can be confusing because the three
national model building codes, (ICBOs Uniform
Building Code, SBCCIs Standard Building Code and
BOCAs National Building Code), all allow
composite materials that meet the NFPAs
definition of limited combustible, to be
classified as noncombustible. What about the
International Building Code?

15
IBC 703.4.2, 2000 edition Materials having a
structural base of noncombustible material as
determined in accordance with Section 703.4.1
with a surface not more than 0.125 inch thick
that has a flame spread index not greater than 50
when tested in accordance with ASTM E 84 shall
be acceptable as noncombustible
materials. Therefore, this office accepts gypsum
wallboard as noncombustible with respect to
NFPA 13.

16
8.14.1.2.3 Concealed spaces formed by studs or
joists with less than 6 in. (152 mm) between the
inside or near edges of the studs or joists shall
not require sprinkler protection. (See Figure
8.6.4.1.5.1.)
6 OR LESS
FIGURE 8.6.4.1.5.1 Arrangement of Sprinklers
Under Two Sets of Open Joists No Sheathing on
Lower Joists.
17
8.14.1.2.5 Concealed spaces formed by ceilings
attached directly to or within 6 in. (152 mm) of
wood joist construction shall not require
sprinkler protection.
6 OR LESS
CEILING PLANE
A.3.7.1 Obstructed Construction. (6) Wood Joist
Construction. The term wood joist construction
refers to solid wood members of rectangular cross
section, which can vary from 2 in. to 4 in. (51
mm to 102 mm) nominal width and can be up to 14
in. (356 mm) nominal depth, spaced up to 3 ft
(0.9 m) on centers, and can span up to 40 ft (12
m) between supports, supporting a floor or roof
deck. Solid wood members less than 4 in. (102 mm)
nominal width and up to 14 in. (356 mm) nominal
depth, spaced more than 3 ft (0.9 m) on centers,
are also considered as wood joist construction.
18
8.14.1.2.6 Concealed spaces formed by ceilings
attached to composite wood joist construction
either directly or onto metal channels not
exceeding 1 in. in depth, provided the joist
channels are firestopped into volumes each not
exceeding 160 ft3 (4.53 m3) using materials
equivalent to the web construction and at least
3½ in. of batt insulation is installed at the
bottom of the joist channels when the ceiling is
attached utilizing metal channels, shall not
require sprinkler protection.
FIGURE A.3.7.1(b) Typical Composite Wood Joist
Construction.
A.3.7.1(3) Composite Wood Joist Construction.
Wood beams of I cross section constructed of
wood flanges and solid wood web, supporting a
floor or roof deck. Composite wood joists can
vary in depth up to 48 in. (1.2 m), can be spaced
up to 48 in. (1.2 m) on centers, and can span up
to 60 ft (18 m) between supports.
19
8.14.1.2.7 Concealed spaces entirely filled with
noncombustible insulation shall not require
sprinkler protection.
20
Noncombustible. Unfaced MinWool-1200 Safing is
rated as non-combustible in accordance with ASTM
E 136 and CAN4-S114-M.
21
8.14.1.2.8 Concealed spaces within wood joist
construction and composite wood joist
construction having noncombustible insulation
filling the space from the ceiling up to the
bottom edge of the joist of the roof or floor
deck, provided that in composite wood joist
construction the joist channels are firestopped
into volumes each not exceeding 160 ft3 (4.53 m3)
to the full depth of the joist with material
equivalent to the web construction, shall not
require sprinkler protection.
CEILING PLANE
22
8.14.1.2.9 Concealed spaces over isolated small
rooms not exceeding 55 ft2 (4.6 m2) in area shall
not require sprinkler protection.
23
8.14.1.2.10 Concealed spaces where rigid
materials are used and the exposed surfaces have
a flame spread rating of 25 or less and the
materials have been demonstrated not to propagate
fire in the form in which they are installed
shall not require sprinkler protection.
Handbook Commentary The requirements of
8.14.1.2.10 permit the use of limited-combustible
materials as a substitute for sprinkler
protection. When considering these materials, it
is important to verify that the testing used to
determine the materials combustibility was
conducted with the material arranged in the
position in which it will be installed. Changes
in the orientation or arrangement of the material
can significantly change the flamespread
characteristics and the combustibility of the
material. Additionally, the materials are
required to be rigid because experience indicates
that nonrigid materials do not demonstrate the
same characteristics during a fire.
24
8.14.1.2.10 Concealed spaces where rigid
materials are used and the exposed surfaces have
a flame spread rating of 25 or less and the
materials have been demonstrated not to propagate
fire in the form in which they are installed
shall not require sprinkler protection.
PLYWOOD ROOF SHEATHING NO FS 25
COATING NON-RIGID/FIBERGLAS BATT, FS 25 OR
COMBUSTIBLE EXPOSED WOOD ROOF RAFTER
SPRINKERS REQUIRED
FS 25 CEILING
PLYWOOD ROOF SHEATHING NO FS 25 COATING RIGID
FS 25 INSULATION EXPOSED WOOD RAFTER/CEILING
JOISTS WITH FS 25 COATING
SPRINKERS NOT REQUIRED
25
PRODUCT INFORMATION SHEET SAFECOAT 747
CLEAR MAGNA COATINGS TECHNOLOGY INC. EAGLE
SPECIALIZED COATINGS AND PROTECTED
ENVIRONMENTS 18523 Fraser Hwy., Surrey B.C.
Canada V3S 8E7 Test ResultsTesting was
conducted in accordance with CAN4-S102-M88
"Standard Method of Test for Surface Burning
Characteristics of Building Materials and
Assemblies" by Underwriters' Laboratories of
Canada. Following is a summary of the results of
this test. Douglas Fir Lumber, coated with
SAFECOAT 725 Sealer/overcoat applied in one coat
at a rate of 9.0 m2 per liter, and SAFECOAT 747
Clear applied in once coat at 4.0 m2 per liter.
Flame Spread Rating 20-25 Smoke Developed
Classification 30-45 NOTE The flammability
characteristics of different species of lumber
vary. However, the practice of using Douglas Fir
as a standard test substrate provides a basis for
the comparison of various coatings.Identification
and CertificationEach container bears a label
reading "Underwriters Laboratories of Canada" or
"Warnock Hersey Laboratories of Canada - Listed -
Fire Retardant Coating" and "Class A Thermal
Barrier".HAZARD CLASSWHMIS B.2, D.1ATDG
Paint, Class 3, UN1263, Packing group 2. See MSDS
for detailed precautions.Guarantee/WarrantyReco
mmendations for the use of our products are based
on tests carried out at government approved labs.
Manufacturer and seller are not responsible for
results where the product is used under
conditions beyond our control. Under no
circumstances will Magna CoatingsTechnology Inc
be liable for consequential damages or damages to
anyone in excess of the purchase price of the
product or services.
26
8.14.1.2.11 Concealed spaces in which the
exposed materials are constructed entirely of
fire-retardant treated wood as defined by NFPA
703, Standard for Fire Retardant Impregnated Wood
and Fire Retardant Coatings for Building
Materials, shall not require sprinkler
protection.
Dricon fire retardant or Dricon FRT wood
complies with or has been granted the
following AWPA C9, C20, C27, C31 AWPA P17
(FR-1), P5AWPA UC1, UC2 UCFA, FR-S, Class I /
Class A type A flame spread, NER-303 (BOCA,
SBCCI) ICBO ER-5755 NFPA 703 EPA registration
(62190-9)
27
8.14.1.2.12 Noncombustible concealed spaces
having exposed combustible insulation where the
heat content of the facing and substrate of the
insulation material does not exceed 1000 Btu/ft2
(11,356 kJ/m2) shall not require sprinkler
protection.
Handbook Commentary Paragraph 8.14.1.2.12 allows
the use of paper coated insulation material in a
space that is otherwise defined as a
noncombustible space.
28
8.14.1.2.12 Noncombustible concealed spaces
having exposed combustible insulation where the
heat content of the facing and substrate of the
insulation material does not exceed 1000 Btu/ft2
(11,356 kJ/m2) shall not require sprinkler
protection.
PREFORMED METAL ROOF PANELS NON-RIGID/FIBERGLAS
BATT, FS 25 OR COMBUSTIBLE EXPOSED STEEL FRAME
BENT
SPRINKERS NOT REQUIRED
FS 25 CEILING
29
8.14.1.2.13 Concealed spaces below insulation
that is laid directly on top of or within the
ceiling joists in an otherwise sprinklered attic
shall not require sprinkler protection.
Handbook Commentary Paragraph 8.14.1.2.13
indicates that sprinklers are not required in the
space between the insulation in an attic and the
ceiling sheathing. The sprinklers in the attic
are anticipated to provide sufficient protection.
30
8.14.1.2.14 Vertical pipe chases under 10 ft2
(0.93 m2), where provided that in multifloor
buildings the chases are fire stopped at each
floor using materials equivalent to the floor
construction, and where such pipe chases shall
contain no sources of ignition, piping shall be
noncombustible, and pipe penetrations at each
floor shall be properly sealed and shall not
require sprinkler protection.
Handbook Commentary Paragraph 8.14.1.2.14
is included in the standard due to impracticality
of installing sprinklers in the small spaces that
are usually behind the walls of bathrooms and
kitchens in residential facilities. This
requirement supports the premise that sprinklers
can only be omitted in concealed spaces where the
installation of sprinklers is absolutely
impractical, such as those spaces identified by
8.14.1.2.3, 8.14.1.2.4, and 8.14.1.2.5 or where
combustibles or ignition sources will not be
present.
31
8.14.1.2.15 Exterior columns under 10 ft2 in
area formed by studs or wood joists, supporting
exterior canopies that are fully protected with a
sprinkler system, shall not require sprinkler
protection.
32
8.14.1.6 Sprinklers used in horizontal
combustible concealed spaces (with a slope not
exceeding 2 in 12) having a combustible upper
surface where the assembly or supporting members
channel heat and where the depth of the space is
less than 36 in. from deck to deck or with double
wood joist construction with a maximum of 36 in.
between the top of the bottom joist and the
bottom of the upper joist shall be listed for
such use. A.8.14.1.6 Surfaces should be
considered to channel heat when the surface or
supporting members are greater than 2 in. in
depth.
33
Handbook Commentary Testing of open web truss
and solid wood joist construction in relatively
shallow comb concealed sprinklers shows that
standard spray sprinklers are ineffective at fire
control above ceilings or below floors. The
shallow space inhibits discharge pattern
development and also increases the probability
that a small fire will involve the upper
combustible members above the sprinkler,
significantly increasing the fire challenge.
Sprinklers specifically listed to protect these
spaces are available. Once the height of the
space exceeds 36 inches, standard sprinklers can
be utilized.
34
8.14.2 Vertical Shafts. 8.14.2.1 General. Unless
the requirements of 8.14.2.1.1 or 8.14.2.1.2
are met, one sprinkler shall be installed at the
top of shafts. 8.14.2.1.1 Noncombustible or
limited-combustible, nonaccessible vertical duct
shafts shall not require sprinkler
protection. 8.14.2.1.2 Noncombustible or
limited-combustible, nonaccessible vertical
electrical or mechanical shafts shall not require
sprinkler protection.
Handbook Commentary Sprinklers are to be
provided at the top of all shafts used for stairs
or other shafts open to more than one floor.
Previously, the requirement in 8.4.2.1.2 applied
to elevator shafts, which is no longer the case.
Elevator shafts now have a distinct set of
requirements in 8.14.5 that address the needs of
the elevator industry. Concealed combustible
shafts must be sprinklered. Concealed shafts of
noncombustible or limited-combustible
construction and contents in a suitably rated
enclosure do not require sprinklers.
35
8.14.2.2 Shafts with Combustible
Surfaces. 8.14.2.2.1 Where vertical shafts have
combustible surfaces, one sprinkler shall be
installed at each alternate floor
level. 8.14.2.2.2 Where a shaft having
combustible surfaces is trapped, an additional
sprinkler shall be installed at the top of each
trapped section. 8.14.2.3 Accessible Shafts with
Noncombustible Surfaces. Where accessible
vertical shafts have noncombustible surfaces, one
sprinkler shall be installed near the bottom.
Handbook Commentary Shafts with combustible
surfaces are covered in 8.14.2.2.1 and
8.14.2.2.2. The additional sprinklers for shafts
with combustible sides must be placed to
effectively wet the combustible surfaces. Where
the shaft changes direction to form a trapped
section, sprinklers are required at the top of
each trapped section.
36
8.14.3 Stairways. 8.14.3.1 Combustible
Construction. Sprinklers shall be installed
beneath all stairways of combustible
construction.
Handbook Commentary The storage of materials in
stairwells obstructs the egress route and is
usually prohibited. When storage does occur, it
is often at the top landing or under the first
landing. As a result, 8.14.3.2.3 requires
sprinklers at these locations and at any other
area in the stair shaft where storage can occur.
37
8.14.3.2 Noncombustible Construction. 8.14.3.2.1
In noncombustible stair shafts with
noncombustible stairs, sprinklers shall be
installed at the top of the shaft and under the
first landing above the bottom of the
shaft. 8.14.3.2.2 Where noncombustible stair
shafts are divided by walls or doors, sprinklers
shall be provided on each side of the
separation. 8.14.3.2.3 Sprinklers shall be
installed beneath landings or stairways where the
area beneath is used for storage.
38
8.14.4 Vertical Openings. 8.14.4.1 General.
Unless the requirements of 8.14.4.4 or 8.14.4.5
(dwelling units) are met, where moving stairways,
staircases, or similar floor openings are
unenclosed, the floor openings involved shall be
protected by closely spaced sprinklers in
combination with draft stops in accordance with
8.14.4.2 and 8.14.4.3.
A.8.14.4 Where sprinklers in the normal ceiling
pattern are closer than 6 ft (1.8 m) from the
water curtain, it might be preferable to locate
the water curtain sprinklers in recessed baffle
pockets. (See Figure A.8.14.4.)
39
8.14.4.2 Draft Stops. Draft stops shall meet all
of the following (1) The draft stops shall
be located immediately adjacent to the opening.
(2) The draft stops shall be at least 18 in.
(457 mm) deep. (3) The draft stops shall be
of noncombustible or limited-combustible
material that will stay in place before and
during sprinkler operation. 8.14.4.3
Sprinklers. 8.14.4.3.1 Sprinklers shall be
spaced not more than 6 ft (1.8 m) apart and
placed 6 in. to 12 in. (152 mm to 305 mm) from
the draft stop on the side away from the
opening. 8.14.4.3.2 Where sprinklers are closer
than 6 ft (1.8 m), cross baffles shall be
provided in accordance with 8.6.3.4.2.
40
Handbook Commentary Vertical openings are
discussed in 8.14.4.1. By placing sprinklers
close to a ceiling opening, the floor area under
the opening can be protected. Section 8.14.4
is limited to openings that do not meet the
definition of an atrium. These smaller openings
tend to behave much the same as a chimney,
allowing rapid vertical movement of the hot
gasses from the fire. This phenomenon is
practically nonexistent in larger openings.
Closely spaced sprinklers in conjunction with
draft stops are an effective method of gaining
control of the fire in these smaller sized
openings and in preventing sprinklers from
operating on the upper levels by cooling the
convective air stream. Some of these openings,
such as escalator openings in department stores,
tent to have displays of combustible material
directly adjacent to the opening, and the
sprinklers prevent the propagation of the fire to
the upper story
41
8.14.4.4 Large Openings. Closely spaced
sprinklers and draft stops are not required
around large openings such as those found in
shopping malls, atrium buildings, and similar
structures where all adjoining levels and spaces
are protected by automatic sprinklers in
accordance with this standard and where the
openings have all horizontal dimensions between
opposite edges of 20 ft (6 m) or greater and an
area of 1000 ft2 (93 m2) or greater.
42
8.14.5 Elevator Hoistways and Machine Rooms.
Handbook Commentary Codes that cover elevator
design, such as ASME A17.1, Safety Code for
Elevators and Escalators, do not permit water
discharge in elevator shafts until electric power
to the elevator cab has been shut down. This
situation necessitates some special arrangement,
such as a preaction system, to make sure water
does not flow in the elevator shaft until power
shutdown has occurred.
Hydraulic
Electric
43
8.14.5 Elevator Hoistways and Machine
Rooms. 8.14.5.1 Sidewall spray sprinklers shall
be installed at the bottom of each elevator
hoistway not more than 2 ft (0.61 m) above the
floor of the pit. 8.14.5.2 The sprinkler
required at the bottom of the elevator hoistway
by 8.14.5.1 shall not be required for enclosed,
noncombustible elevator shafts that do not
contain combustible hydraulic fluids.
2 max
44
8.14.5.3 Automatic sprinklers in elevator
machine rooms or at the tops of hoistways shall
be of ordinary- or intermediate-temperature
rating.
A.8.14.5.3 ASME A17.1, Safety Code for Elevators
and Escalators, requires the shutdown of power to
the elevator upon or prior to the application of
water in elevator machine rooms or hoistways.
This shutdown can be accomplished by a detection
system with sufficient sensitivity that operates
prior to the activation of the sprinklers (see
also NFPA 72, National Fire Alarm Code). As an
alternative, the system can be arranged using
devices or sprinklers capable of effecting power
shutdown immediately upon sprinkler activation,
such as a waterflow switch without a time delay.
This alternative arrangement is intended to
interrupt power before significant sprinkler
discharge.
45
8.14.5.4 Upright or pendent spray sprinklers
shall be installed at the top of elevator
hoistways. 8.14.5.5 The sprinkler required at
the top of the elevator hoistway by 8.14.5.4
shall not be required where the hoistway for
passenger elevators is noncombustible and the car
enclosure materials meet the requirements of ASME
A17.1, Safety Code for Elevators and Escalators
A.8.14.5.4 Passenger elevator cars that have
been constructed in accordance with ASME A17.1,
Safety Code for Elevators and Escalators, Rule
204.2a (under A17.1a-1985 and later editions of
the code) have limited combustibility. Materials
exposed to the interior of the car and the
hoistway, in their end-use composition, are
limited to a flame spread rating of 0 to 75 and a
smoke development rating of 0 to 450.
46
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47
8.14.7 Exterior Roofs or Canopies.
A.8.14.7 Small loading docks, covered platforms,
ducts, or similar small unheated areas can be
protected by dry-pendent sprinklers extending
through the wall from wet sprinkler piping in an
adjacent heated area. Where protecting covered
platforms, loading docks, and similar areas, a
dry-pendent sprinkler should extend down at a
45-degree angle. The width of the area to be
protected should not exceed 7½ ft (2.3 m).
Sprinklers should be spaced not over 12 ft (3.7
m) apart. (See Figure A.8.14.7.)
FIGURE A.8.14.7 Dry-Pendent Sprinklers for
Protection of Covered Platforms, Loading Docks,
and Similar Areas.
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8.14.7.1 Unless the requirements of 8.14.7.2
or 8.14.7.3 are met, sprinklers shall be
installed under exterior roofs or canopies
exceeding 4 ft (1.2 m) in width.
A.8.14.7.1 Balconies, decks, and similar
projections from the building should be treated
as exterior roofs and canopies when applying the
criteria of 8.14.7.1. Handbook Commentary
Exterior canopies exceeding 4 feet in width must
be sprinklered if they are of combustible
construction, as implied in 8.14.7.1, regardless
of whether or not combustible goods are stored or
handled underneath them. Canopies less than
4 feet in width do not need to be sprinklered
regardless of construction type, provided no
combustibles are stored beneath them.
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8.14.7.2 Sprinklers shall be permitted to be
omitted where the canopy or roof is of
noncombustible or limited combustible
construction.
Handbook Commentary As stated in 8.14.7.2,
sprinklers can be omitted if the canopy
construction assembly is comprised totally of
non-combustible or limited combustible materials
and the area underneath is essentially restricted
to pedestrian use. The reference to
noncombustible and limited combustible
construction applies to the entire canopy
assembly and not just the exposed surface.
The roof canopy typically found on strip shopping
malls, in which the area under the canopy is
limited to pedestrians, is one example of this
condition. Automobiles stopping briefly to pick
up or drop off passengers are not considered
storage. Canopies over drive-thru bank canopies
or porte cocheres at motels and hotels normally
do not require sprinklers. However, the area
under the exterior ceiling shown in Exhibit 8.25
requires sprinkler protection. This space is
used primarily for parking vehicles and the
remainder of the building is sprinklered.
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SPRINKLER PROTECTION OF ISOLATED HAZARD FROM
DOMESTIC WATER SUPPLY
NFPA 1019.7.1.2, 2003 edition Sprinkler
piping serving not more than six sprinklers for
any isolated hazardous area shall be permitted to
be connected directly to a domestic water supply
system having a capacity sufficient to provide
6.1 mm/min (0.15 gpm/ft2) throughout the entire
enclosed area. An indicating shutoff valve,
supervised in accordance with 9.7.2 or NFPA 13,
Standard for the Installation of Sprinkler
Systems, shall be installed in an accessible,
visible, location between the sprinklers and the
connection to the domestic water supply.
53
COMPARISON OF SUPERVISED SPRINKLER SYSTEM NFPA
13 VS. NFPA 101
  • NFPA 138.15.1.1.2, 2002 edition Supervision.
  • 8.15.1.1.2.1 Valves on connections to water
    supplies, sectional control and isolation valves,
    and other valves in supply pipes to sprinklers
    and other fixed water-based fire suppression
    systems shall be supervised by one of the
    following methods
  • Central station, proprietary, or remote station
    signaling service.
  • Local signaling service that will cause the
    sounding of an audible signal at a constantly
    attended point.
  • Valves locked in the correct position.
  • Valves located within fenced enclosures under the
    control of the owner, sealed in the open
    position, and inspected weekly as part of an
    approved procedure.

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COMPARISON OF SUPERVISED SPRINKLER SYSTEM NFPA
13 VS. NFPA 101
NFPA 1019.7.2.1, 2003 edition Where
supervised automatic sprinkler systems are
required by another section of this Code,
supervisory attachments shall be installed and
monitored for integrity in accordance with NFPA
72, National Fire Alarm Code, and a distinctive
supervisory signal shall be provided to indicate
a condition that would impair the satisfactory
operation of the sprinkler system. System
components and parameters that shall be monitored
shall include, but shall not be limited to,
control valves, fire pump power supplies and
running conditions, water tank levels and
temperatures, tank pressure, and air pressure on
dry-pipe valves. Supervisory signals shall sound
and shall be displayed either at a location
within the protected building that is constantly
attended by qualified personnel or at an
approved, remotely located receiving
facility. 9.7.2.2 Alarm Signal Transmission.
Where supervision of automatic sprinkler systems
is provided in accordance with another provision
of this Code, waterflow alarms shall be
transmitted to an approved, proprietary
alarm-receiving facility, a remote station, a
central station, or the fire department. Such
connection shall be in accordance with
9.6.1.3. Supervisory Signals.
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