3614_2 Fire Doors

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    IS 3614 Part 2 ) : 1992



    UDC 699814 : 62016

    0 BIS 1992


    NEW DELHI 110002

    une 1992 Price Group 2

    ( Reaffirmed 2002 )

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    Fire Safety Sectional Committee, CED 36


    This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalizedby the Fire Fighting Sectional Committee had been approved by the Civil Engineering DivisionCouncil.

    The methcd of fire resistance test of various structures and buildings are covered in IS 3809 : 19793Indian Standard for Fire Resistance Test for Structures ( Firsr Revision . The method of FireResistance Test of Fire Check Doors included for use in openings in fire resistance wall requiredifferent procedure in view of its importance and hence the same has been covered in this standard.This standard covers method of test and criteria for specifying fire rating instead of specification in.view of givir:g flexibility in design.

    For the purpose of deciding whether a particular requirement of this standard is complied with,.the final value, observed or ca culated, expressing the result of a test for analysis, shall be roundedoff in accordance with IS 2 : 1960 Rules for rounding off numerical values ( revised . Thenumber of significant places retained in the rounded off value should be the same as that of thespecified value in this standard.

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    IS 3614 ( Pnrt 2 ) :,L m

    I ndi an St andard a



    1 COPE


    Xl This standard specifies methods of fire-resistance test and the performance criteria forthe fire check door or shutter provided to resist

    the passage of fire and/or gaseous products of,combustion, when closed in order to decide the,capability of the door/shutters for the intendeduse.

    1.2 The test provides for the determination offire rating of fire door on the basis of length oftime the fire door to resist passage of fire andsmoke at ambient temperature before the first

    .development of through openings or flammingand transmission of heat on unexposed surface.

    1.3 For the purpose of identifying where thefire doors should be used and the fire resistancerequirements, reference should be made toIS 1642 : 1989 and IS 1643 : 1988.


    2.1 The following Indian Standards have beenreferred to in this standard:

    IS No. Tit le

    1642 : 1989 Code of practice for fire safetyof buildings ( general ): Generalprinciples of fire grading andclassification ( first revision

    1643 : 1988 Code of practice for fire safetyof buildings ( general ): Exposurehazard ( jirst revision

    8757 : 1978 Glossary of terms associatedwith fire safety


    3.1 For the purpose of this standard thedefinitions covered in IS 8757 : 1978 andIS 1642 : 1989 shall apply.

    3.2 In addition to the above mentioned definitionthe following additional definitions shall also beapplicable to this standard.

    3.2.1 Escape Route

    A route forming part of the means of escapefrom a point in a building to a final exit.

    3.2.2 Final Exit

    The termination of an escape route from abuilding giving direct access to a street, passage-

    way, walkway or Opel1 space, so sited to ensure

    the rapid dispersal of persons from the vi&&yof a building and that they are no longer indanger from fire and/or smoke.

    3.2.3 Fire

    A process of combustion characterized by theemission of heat accompanied by smoke and/orflame.

    3.2.4 Fire Compartmentation

    The division of a building into compartments

    by elements of a building construction intendedto resist the passage of fire, capable of meetingspecified performance criteria to those ends.

    3.2.5 Fire Door

    A door or shutter provided for the passage ofpersons, air or things which, together with itsframe and fixture as installed in a building, isintended, when closed, to resist the passage offire and/or gaseous products of combustion andis capable of meeting specified performancecriteria to those ends.insulated or uninsulated.

    The fire doors may be

    3.2.6 M eans of Escape

    Structural means whereby a safe route isprovided for persons to travel from any pointin a building to a place of safety without outsideassistance.

    3.2.7 Protected Escape Route

    An escape route enclosed with fire resistingconstruction.

    3.2.8 Impermeability

    The ability of a specimen of a separating elementto restrict the egress of hot gases from theunexposed face of the specimen causing ignitionof the cotton pad.


    4.1 Furnace

    It shall be capable of subjecting a full sizespecimen individually or in combination withothers in a fire rated vertical structural elementwith fire resistance not less than specimen to beevaluated. The furnace shall also be capableof reproducing standard conditions of heatingand pressure.


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    cs St514 ( Part 2 3 : 1992

    4.2 Thermocouples

    4.2.1 Appropriate thermocouples shall beprovided for measuring the internal furnace.temperatures and unexposed surface tempera-tures of the fire door assembly in conformitywith the requirements of 5.3 and 5.4.

    4.3 Pressure Measuring Equipment

    4.31 Pressure measuring equipment coupledwith the furnace shall be provided in conformitywith the requirements of 6.1 and 6.2.


    5.1 Temperature Rise

    The temperature rise within the furnace shallhe controlled so as to vary with time within thelimits specified in

    relationship:5.3 according to the following

    T-To= 345 Logo ( 8r + Iwhere

    T = furnace temperature at time t,expressed in degree Celsius;

    To = initial furnace temperature, ex-pressed in degree Celsius; and

    t = time, expressed in minutes

    The curve representing this function, known asthe Standard time temperature rise curve is

    shown in Fig. 1. The furnace characteristics interms of temperature rise as a function of timeshall be as given in Table 1.

    Table 1 Temperature Rise as a Functionof Time

    Time, t Elevatiqn of FurnaceTemperature. T T.

    M i n C



    5 5 6

    65915 71830 821 ,.60 92590 986

    120 1029180 1090240 1 133360 1 193

    5.2 Measurement of Furnace Temperature

    5.2.1 The furnace temperature is deemed to bethe average of the temperatures recorded bythermocouples arranged within the furnace to.give an approximation to its averagetemperature.

    5.2.2 These thermocouples shall not be less.than 5.

    5.2.3 Bare wire thermocouples of wire diameternot less than 075 mm and not more than 15 mm.shall be fixed on the faces of the door or shutter,excluding the frame, one at the centre and the.other at the centre of each quarter section.None of these fire thermocouples shall be fixedon positions with through metal connections or

    closer than 100 mm to the edge of the door leafor shutter. If insulation data are required onglazed door or multi-leaf door, the thermocouple.

    TIME t min.



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    IS 3614 Part 2 ) Z 992

    suitable adhesive, depending. on the naturi .ofthe material formipg the side of the specimen.

    5.5 The temperature reading shall be measuredat intervals of 15 minutes or less until a readingexceeding 1QOC has been obtained at any onepoint. Thereafte;, the readings be taken atintervals not .le$sfhan 5 minutes depending onthe rate of tembperatuie rise ( slow/rapid ).


    6.1 An overall pressure difference of ( 25 f 5 )Pa [ ( 2.5 & 05 ) mm of Hz0 1 shall exist in thefurnace during the evaluation period from15 minutes onwards.

    6.2 The overall pressure shall be measured andmonitored at 100 mm from the underneathsurface for the horizontal specimen and at apoint located approximately at three quarters ofthe height of the test specimen.


    The testing equipment and test sample assemblyshall be protected from abnormal condition ofwind or weather. The ambient temperature atthe beginning of test shall lie within 20C to40C range. Doors made entirely of metal donot require any conditioning.


    8.1 Two representative samples as test specimenshall be conditioned for a week prior to testing.The drying of the test specimen may be carriedout by natural or artificial means that thetemperature should not exceed 60C.

    shall be distributed as uniformly as possible.The maximum temperature rise on the unexpos-ed surfaces shall be determined from the firetherinocouple specified above plus additionalthermocouple ( fixed or mobile 1 which may beused over through metal c%nnections dr at otherpoints con6dered to be of special.interest.

    5.2.4 Sheatlred thermocouples may be usedprovided that they have a sensitivity not lessthan and time-constant not greater than thoseof bare thermocouples. The wires of thethermocouples shall be placed approximately25 mm from the hot junciion.

    5.3 Tolerances

    5.3.1 The mean deviation of the furnacetemperature rise is given as a percentage by thefollowing expression :

    A+ x 100where

    A = integral value of the averagefurnace temperature as a functionof time, and

    B z integral value of T - T,, fromthe equation defined in 5.1.

    The tolerances on the mean deviations shallsatisfy the following conditions:

    a) f 15 percent during the first 10 minutesof test,

    b) f 10 percent during the ffrst 30 minutesof test, and

    c) f 5 percent after the first 30 minutesof test.

    5.3.2 At any time after the first 10 minutes of 8.2 Special care is to be taken to ensure that

    test, the temperature recorded by any thermo-Fire Doors particularly, when made of or con-

    couples, shall not differ from the corresponding taining timber, gaps which are representativeof sitetemperature of the standard time-temperature specimen conditions are provided in the test

    curve by more than +lOOC. For specimens For anybody to judge, a clearance

    incorporating a significant amount of combus- gap of 2 km between door leaf edge and door

    tible material, the deviation of any one thermo- frames and 4 mm between the meeting edges

    couple shall not exceed 200C.of leaves in double leaf door may be considereda good fit.

    5.4 Measurement of Temperature of TestSpecimens 9 PROCEDURE AND RATING

    Surface temperature of test specimens shall be * For insuated Doorsmeasured by means of thermocouples with awire diameter of not more than 07 mm.

    T es t method described in clauses 9.3 to 9.7 shalIapply.

    5.4.1 Each thermocouple junction shall beattached to the centre of the face of a copperdisk 12 mm in diameter and 02 mm thick,which is secured to the surface of the specimenat the required position.

    5.4.2 The disks shall be covered with oven-drysquare asbestos pads of 30 x 30 mm and 2 mmthick. The asbestos material shall have adensity of 100 kg/ma.5.4.3 The disk end and pad may be fixed to thesurface of the specimen by pins, tape or a


    9.2 For Uninsulated Doors

    Test method described in clauses 9.4, 9.6 and 9.7shall apply.

    9.3 Loss of Integrity9.3.1 A failure of the test specimen to maintainintegrity shall be deemed to have occurred whencoliapse or sustained flaming on the unexposedface occurs or the criteria given in 9.3.2 forimpermeability are exceeded.

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    The use of the Standard Mark is governed by the provisions of the Bureau of IndianSt andar ds A ct, 1986 and the Rules and Regulations made thereunder. The Standard Mark onproducts covered by an Indian Standard conveys the assurance that they have been producedto comply with the requirements of that standard under a well defined system of inspection,testing and quality control which is devised and supervised by BIS and operated by the pro-ducer. Standard marked products are also continuously checked by BIS for conformity tothat standard as a further safeguard. Details of conditions under which a licence for the useof the Standard Mark may be granted to manufacturers or producers may be obtained fromthe Bureau of Indian Standards.

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    Bureau of Indian Standards

    BIS is a statutory institution established under the Bureau o ndi an St andar ds A ct, 1986 to promoteharmonious development of the activities of standlrdizztion, mnrking and quality certification ofgoods and attending to connected matters in the country.


    BIS has the copyright of all its publications. No part of these publications may be reproduced inany form without the prior permission in writing of BIS. This does not preclude the free use, inthe course of implementing the standard, of necessary details, such as symbols and sizes, type orgrade designations. Enquiries relating to copyrlght bs addressed to the Director ( Publications ), BIS.

    Revision of Indian Standards

    Indian Standards are reviewed periodically and revised, when necessary and amendments, if any,are issued from time to time. Users of Indian Standards should ascertain that they are inpossession of the latest amendments or edition. Comments on this Indian Standard may be sentto BIS giving the following reference :

    Dot : No. CED 36 ( 4784 )

    Amendments Issued Since Poblication

    Amend No. Date of Issue Text Affected

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