J I S A r 1 3 0 4 9 4 H 4933608 O527264 7 9 2 H
UDC 692:699.812.001.4
JI$
JAPANESE
INDUSTRIAL
STANDARD
Method of fire resistance
test for structural
parts of buildings
Translated and Published
by
Japanese Standards Association
Printed in Japan 7s
~~
J I S A*1304 94 = 4933608 0527265 b 2 9
In the event of any doubt arising,
the original Standard in Japanese is t o be final authority.
J I S Au1304 94 = 4933h08 0527266 565 =
UDC 692:699.812.001.4
JAPANESE INDUSTRIAL STANDARD J I S
Method of fire resistance test for A 1304-1994
structural parts of buildings
1. Scope This Japanese Industrial Standard specifies method of fire resis-
tance test for structural parts of buildings such as wall, column, beam, floor
(inclusive of ceiling), roof, etc.
Remarks 1. The loaded heat test specified in 6., watering test specified in
7. or shock test specified in 8. shall be carried out where neces-
sary.
2. The construction that passed the test shall be classified as
follows:
Classified by heat test: 30 min heat 1 h heat
2 h heat 3 h heat
4 h heat
Loaded heat test L
In case of existence of other tests Watering test W
Shock test S
Example of symbol: 2 h heat WS - Product that passed the 2 h
heat test and also passed the watering test
and shock test
3. The following standard is cited in this Standard:
JIS C 1602 Thermocouples
4. The units and numerical values in { } in this Standard are
based on the traditional units and appended for informative
reference.
2. Test piece
2.1 Test piece shall be of the same construction as that used practically, if
there is partial difference in fire resistance, the part regarded as weak in fire
resistance shall be included.
2.2 In case where the test piece has hollow portion, the test piece shall be
i
made so as to seal the circumference and reverse side for wall and floor, and both
ends for column and beam.
Informative reference: In case of the construction made up of steel pipe
filled up with concrete o r the like, as there is
possibility of explosion of test piece caused by high
pressure steam due t o the water content of the
filler, the test piece shall be made by drilling holes
on the steel pipe for safety.
2.3 Reference size of test surface of test piece shall conform t o Table 1.
= 4933608 052’7267 YTL
~
J I S A*:L304 9 4
2
A 1304-1994
Table 1
Structural I Size cm Section
parts
Wall Height 240, Height 180, Height 90, Thickness shall be
width 180 min. width 90 width 90 the same as actual &
one.
Length 240, Length 180,
width 180 min. width 90
Roof
Column Height 240 min. Height 150 Section shall be the
same as actual one.
Length of side or
diameter of steel may
be 40 cm min., how-
Beam Length 240 min. Length 150 ever, without changing
thickness of covering
material for steel.
2.4 The test pieces of steel structural column and beam shall be, besides in
conformity with 2.3, the section of that steel shall conform t o Table 2. In case
where the steel section of actual structure is smaller than this value, however,
shall conform t o the actual section.
Table 2
Structural parts Steel sectional area Size
cmz cm
Column 120 max. Side or diameter: about 30
Beam 100 max. Depth: about 40
2.5 Concerning test pieces for watering test and shock test, in case where it is
recognized that there is no difference on fireproofing and structure, the test piece
of wall may be substituted for the test pieces of floor, column and beam.
2.6 The test piece shall be dried in well ventilated room for term o r so given in
Table 3. In case where the dried state is made by artificial drying or it is con-
firmed by the suitable test method that it is in air dried state, however, this term i
may be shortened.
As for the metallic or glass products, there is no need of drying.
Table 3
Classification Summer Winter
Wet method such as treated with concrete, mortared 2 months 3 months
Dry method such as lined with asbestos slate 1 month 1 month
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J I S A a l 3 0 4 74 4733608 0527268 338
3
A 1304-1994
3. Heating furnace
3.1 Heating furnace shall be able to make temperature change corresponding
with time shown in 4. almost uniformly on whole test surface.
3.2 Heat source of heating furnace shall be town gas, propane, fuel oil and
other suitable fuels, and its flame will be able to reach direct sufkiently the test
piece.
3.3 Fixing frame of test piece shall be heat-proof and constructed so as to be
able t o hold test surface at the appointed position.
3.4 Wall shall be heated from one side at the vertical position, column shall be
from four sides at the vertical position, beam and floor shall be from under side
a t the horizontal position.
3.5 The heating furnace for loaded heat test shall be provided with the device
which is able to apply a specified load on the test piece during heating.
4. Grade of heating Heating temperature shall conform to reference curves
shown in Table 4 and Attached Fig. 1, and the grade of heating shall be classified
as 30 min heat, 1 h heat, 2 h heat, 3 h heat and 4 h heat, whose heating
durations are 30 min, 1 h, 2 h, 3 h and 4 h respectively.
Table 4
Elapsed time (min) 5 10 15 20 25 30 35 40 45 50 55 60
Heating
temperature (Oc) 540 705 760 795 820 840 860 880 895 905 915 925
Elapsed time (min) 65 70 75 80 85 90 95 100 110 120 130 140
Heating
temperature (Oc) 935 945 955 965 975 980 985 990 1000 1010 1015 1025
Elapsed time (min) 150 160 170 180 190 200 210 220 230 240
Heating
temperature (Oc) 1030 1040 1045 1050 1060 1065 1070 1080 1085 1095
5. Heat test
5.1 Part other than the test surface shall be covered with fire brick or the like
so as t o cut off the flame. Further, if there is possibility of heating of the part
other than test surface on account of gap between them, it shall be heated after
applying suitable treatment such as filling up with asbestos or the like.
5.2 As for the construction having gas permeability, cavity, joint, etc., the
heating method shall be adopted so that the furnace inside pressure of heating
side of test piece will become higher than the atmospheric pressure.
F o r this purpose, by fitting the manometer or the like on the test surface and
1
shall be confirmed that a t least about 7of heating surface is receiving the fur-
nace inside pressure which is higher than the atmospheric pressure.
~~
J I S Ax1304 74 m 4733608 0527269 274 m
4
A 1304-1994
5.3 Heating temperature shall be measured with CA thermocouple of 1 mm in
diameter and Grade 0.75 o r superior in performance specified in JIS C 1602.
Beam Wall, floor, roof
A 12 ( 8 ) 9 (7) 9 (5)
B, c 8 (6) 6 (5) 5 (3)
5.5 Heating shall be carried out, in the manner t o meet the reference curve
specified in 4.,the temperature indicated by the thermocouple specified in 5.4 will
reach the heating time of scheduled grade of heating. In case of need, however, it
may be heated more than the heating time of scheduled grade of heating.
5.6 Heating temperature shall be measured within every 2 min up t o 30 min and
after 30 min within every 5 min. Tolerance on the mean furnace inside tempera-
ture for the reference curve shall be, in the heating time-temperature area, within
*
f 10 % up t o one hour of heating time, f 7.5 % up t o two hours and 5 % for ex-
ceeding two hours. With the temperature higher than the tolerance, when passed
the provisions of 5.10, however, the above requirements need not be fulfilled.
Beam Wall, floor, roof
A 9 (6) 6 (5) 5 (4)
I I I
B, C I 6 (4) I 4 (3) I 3 (2)
Remarks: Numerals in brackets show minimum value.
J I S A+L304 9 4 4933608 0527270 T î b
5
A 1304-1994
5.8 Concerning wall and floor, the temperature of reverse side of heating sur-
face (inclusive of joint and other weak portion. Hereafter referred to as "reverse
side temperature") shall be measured. The reverse side temperature shall be
measured with CA thermocouple of 0.65 mm in diameter and Grade 0.75 or supe-
rior in performance specified in JIS C 1602. Five or more hot junctions (3 for B,
C test piece) shall be arranged (refer to Attached Fig. 2), on the test piece and
shall be covered by close adherence with Japan cedar board of 10 cm x 10 cm
min., thickness of 1.5 cm a t air dried state.
Moreover, in case of heating for over the heating time of scheduled grade of
heating, the measurement shall be carried out by adding more hot junctions than
above-mentioned, and by covering with close adherence of asbestos board of 10 cm
x 10 cm min., thickness of.1 cm a t air dried state.
5.9 Surface temperature and reverse side temperature of steel shall be mea-
sured even after completion of heating until showing descent. The temperature
shall be measured within every 5 min.
5.10 As a result of heat test, if test piece conforms to the following require-
ments, the test shall be considered to be passed.
(i) During heating, there is no change regarding as harmful for fireproof and
strength structurally such as deformation, destruction, coming off, etc.
Remarks: If the exfoliation is limited t o the surface layer due t o the local
explosion, and even if the partial explosion, big crack, exfolia-
tion, coming off, etc. occurs on the heated side of laminated
material, if reverse side material or core material does not come
under them, the material shall be accepted.
(2) During heating, on wall, floor and roof, there shall be no crack which
allows flame t o penetrate.
Remarks: When recognized that the crack reaches the reverse side, put
cotton wool on that cracked part, and if it does not catch fire, it
shall be accepted.
(3) Concerning wall and floor, the reverse side temperature specified in 5.8
shall not exceed 260°C. In case of reverse side temperature of outer wall
heated from indoor, however, the above requirements need not be fulfilled.
When heated over the heating time of scheduled grade of heating, obtain
the time by adding the heating time of scheduled grade of heating to the
time which the temperature indicated by the thermocouple covered with
asbestos board, after completion of heating showed until descent. And a t
this obtained time the temperature indicated by thermocouple covered with
Japan cedar board shall conform to this requirements.
(4) Maximum and mean of steel temperature specified in 5.7 shall not exceed
the temperature shown in Table 7.
When heated over the heating time of scheduled grade of heating, a t the
time obtained by adding the heating time of scheduled grade of heating t o
the time after completion of heating showed until descent, the temperature
shall conform to this requirements.
= Y733608
~~ ~
J I S AJl1304 74 0527273 722
6
A 1304-1994
Table 7
Unit: "C
Column, beam Floor, roof, wall
(exclusive of non-proof
stress outer wall)
Steel framed Max. temperature 500 max. 550 max.
reinforced concrete
structure
Reinforced concrete
structure
Reinforced concrete
panel, etc.
Prestressed Max. temperature 400 max. 450 max.
concrete structure
Steel structure IMax. temperature I 450max. I 500 max.
I Mean temperature I 350 max. I 400 max.
(5) During heating, all structural materials shall not flame remarkably and
after completion of heating any ember shall not remain for 10 min o r more.
6. Loaded heat test
6.1 Concerning the fire resistance test conducted on A test piece for main
structurally proof stress parts, the judgement of acceptance o r rejection may be
carried out in accordance with loaded heat test, disregarding 5.10 (4).
6.2 By loading the weight which will produce the stress intensity equivalent to
1.2 times the long-term permissible stress intensity, the heat test specified in 5.
shall be carried out. However, as for the roof not utilized as housetop, by
dividing roof area every 1 m2, and concentrated load of 637 N {65 kgfj shall be
applied to the central point of each divided part.
6.3 As a result of loaded heat test, if the main structural materials did not
show any rupture on proof stress and conform to each item exclusive of 5.10 (4),
the test is considered to be passed. Here, "did not show any rupture" shall mean
that changed amount of deformation of test piece such as deflection or elongation,
etc. did not change abruptly, moreover, as for floor the maximum deflection (cm)
1
shall not exceed 10000of the square of distance (cm) between supports of test
1
piece, and also, as for roof the maximum deflection (cm) shall not exceed 6000 of
the square of distance (cm) between supports of test piece.
7. Watering test Test piece shall be heated in conformity with the method of
testing specified in 5. for 30 min (10 min for 30 min heat) or more. Immediately
after heating a t the horizontal distance of 5 m and a t the angle of 45" against the
sirrface, the watering test shall be conducted on the nearly central part of the test
piece with the nozzle bore of 12.7 mm, nozzle pressure of 137.2 kPa I1.4 kg/cm2}
for 2 min. If there is no serious break or missing, the material shall be accepted,
J I ' S A*l1304 9 4 4933b08 0 5 2 7 2 7 2 4 6 9
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A 1304-1994
Remarks: The conversion t o the value based on the International Unit
System (SI) when testing by means of the tester or measuring
instrument indicating the values based on the traditional unit
system shall be made in accordance with the following formula:
1 kgf = 9.80 N
8. Shock test The test piece heated by the method of heating specified in 5.
for 30 min (10 min for 30 min heat) or more, shall be placed horizontally with the
test surface upwards (in case of floor o r ceiling, with the surface downwards), and
egg-apple-shaped weight of 1 kg, 5 kg o r 10 kg in mass as shown in Attached Fig.
3, shall be dropped from the height as shown in Table 8 on the weak point of test
piece according t o the kind of structural part, and when there is no exfoliation of
over the whole thickness of fire resistant covering material nor holes reach the
reverse side, the test piece shall be accepted.
Table 8
30 min heat 1 h heat 2, 3, 4 h heat
Floor, Column, Floor Column, Floor Column,
Items roof wall wall wall
Mass of weight kg 1 1 5 5 10 10
Dropping height cm 200 100 200 100 200 100
9. Judgement and reDort
9.1 The number of times of heat tests in 5. shall be as given in Table 9 accord-
ing t o the size of test piece and its combination, and all the tests shall be passed
at each time.
Table 9
~
Structural parts Size of test piece and number Symbol
of times of tests
Wall (l) Combination of once for A size and once for AC
C size test piece
I Twice for B size test piece I BB
Three times for C size test piece
Floor, column, beam,
roof B size test piece
Three times for B size test piece BBB
J I S A*L304 94 = 4933608 0527273 7T5
8
A 1304-1994
Table 9. (continued)
Note (l) As for the wall having asymmetric material construction on
both sides, the test shall be carried out the number of times
given in above, on both sides respectively. Concerning the
structural parts correspond t o the followings, however, the
judgement should not be made only by the C test piece.
(a) Having thick total thickness containing air layer or the
like.
(b) Having the possibility of causing harmful deformation for
fire prevention by heating such as gap, crack, coming off,
etc. due t o change of elongation, contraction o r deflection
of materials.
9.2 The number of times of tests of loaded heat test in 6., watering test in 7.
and shock test in 8. shall be twice each and the test shall be passed a t each time.
9.3 On the report of the test results, name of kind of construction, details of
materials used (inclusive of specific gravity, moisture content and other qualities),
shape and size of test piece, grade of heating, heat source, heating temperature,
reverse side temperature and steel temperature, and their mean values and
measured points, maximum value and time required t o reach that value,
important items of observation concerning fire prevention, judgement and its
ground of results, fuel consumption, date of test, name of test institution and
name of person in charge of test shall be mentioned.
Attached Fig. 1
- Time (min)
J I S A*1304 94 4733608 0 5 2 7 2 7 4 63% =
9
A 1304-1994
Attached Fig. 2. (Reference example of temperature measuring points)
a. Column b. Beam
A test piece
A test piece
B test piece
B test piece
f-f] -_
*+ . -.
. .
: .._
I .
... .
_ _
A test piece
-I-
c. Wall and floor
C test piece
I
L ' 1' L' 1' 1' I' 1' I'
Eyy
z v 4 4
Explanatory notes: a-.....
measuring point of heating temperature
O...... measuring point of steel temperature
x ...... measuring point of reverse side temperature
J I S A*<L304 94 M 4933608 0527275 578
10.
A 1304-1994
Attached Fig. 3
Approx.
m
J I S A*<L304 9 4 W 4 9 3 3 6 0 8 0527276 4 0 4
A 1304-1994
Edition 1
Japanese Text
Established by Minister of Construction
Date of Establishment: 1959-10-22
Date of Revision: 1994-02-15
Date of Public Notice in Official Gazette: 1994-02-15
Investigated by: Japanese Industrial Standards Committee
Divisional Council on Architecture
This English translation is published by:
Japanese Standards Association
\ 1-24, Akasaka 4, Minato-ku,
Tokyo 107 Japan
O JSA, 1995
Printed in Tokyo by
Hohbunsha Co., Ltd.
