NBSIR 74-575

Meetings of WG 3,

11 of ISO/TC 92, March 25-29, 1974

D. Gross Mni g

Programmatic Center for Fire Research

Institute for Applied Technology

National Bureau of Standards

Washington, D. C. 20234

September 1974

Progress Report

Prepared for Subcommittee on International Standards

ASTM Committee E 5.92

NBSIR 74-575

MEETINGS OF WG 3, 10 AND

11 OF ISO/TC 92, MARCH 25-29, 1974

D. Gross

Programmatic Center for Fire Research

Institute for Applied Technology

National Bureau of Standards

Washington, D. C. 20234

September 1974

Progress Report

This is a working document for the use of ASTM

Committee E 5 only. Not for publication, except as expressly approved by the chairman of the committee

or the managing director of ASTM.

Prepared for Subcommittee on International Standards

ASTM Committee E 5.92

U. S. DEPARTMENT OF COMMERCE, Frederick B. Dent, Secretary

NATIONAL BUREAU OF STANDARDS, Richard W. Roberts. Director

MEETINGS OF WC 3, 10 AND 11

OF ISO/TC 92

March 25-29, 1974

D. Gross

Meetings of three ISO/TC 92 Working Groups on Door

Assemblies, Measuring Instruments and Fire Resistance Tests

were held in London and Boreham Wood, England during the week

of March 25-29, 1974. The principal agenda items were (a)

resolution of comments from the ballots on Draft International

Standard ISO/DIS 3008 Fire Resistance Tests on Door and Shutter

Assemblies and on Draft International Standard ISO/DIS 3009

Fire Resistance Tests on Glazed Elements, (b) fire test instrumentation and (c) development of a test method for suspended

ceilings

.

Key words: Door assemblies; fire endurance; fire tests; ISO/TC 92;

suspended ceilings; windows.

1. WORKING GROUP 3 — TEST REQUIREMENTS FOR DOOR ASSEMBLIES

Tenth Meeting, Boreham Wood and London, March 28, 29, 1974

PARTICIPANTS

:

H. L. Malhotra, UK, Chairman

W. Morris, UK

A. Roach, UK

Dr. G. Hall, UK

J. Dekker, Netherlands

P. Oksanen, Finland

Westhoff, Germany

H. Salmark, Denmark

P. Arnault, France

G. Bellisson, France

J. C. Laurin, France

Mrs. Luschevici, France

J. Keough , Australia

D. Gross, U.S.A.

R. B. Williamson, U.S.A.

Col. Curtis, UK, Secretariat

The list of appropriate documents is given below.

DOCUMENTS

:

(UK-28) 108

(Belgium-11) 113

(Belgium-12) 114

First Draft, Test Specification for Smoke Stop Doors

Definition of Leakage Factor in Tests for Smoke

Control Doors

Measurement of the Leakage Factor of Smoke Control

Doors - Temperature Conditions

(Sec-26) 115 Comments from Member Bodies on ISO/DIS 3008

(Sec-27) 116 Comments from Member Bodies on ISO/DIS 3009

1
(Sec-28) 117 Agenda for Tenth Meeting of WG3

(UK-28) 119 Analysis of Comments on ISO/DIS 3008

(UK-29) 120 Analysis of Comments on ISO/DIS 3009

(USA-14) 121 Letter from Dr. Robertson

(Aus-4) 122 Letter from Mr. Keough

(Belg-12) 123 Letter from Mr. Minne

Agenda Item 1. Opening of Meeting

Mr. DiBiase of Italy was added to WG3

Agenda Item 2. Approval of Report of 9th Meeting

Agenda Item 3. Note Draft Report of TC92 Plenary Meeting as Given in

Document (Sec-186) 376

Agenda Item 4. Comments and Changes to ISO/DIS 3008 (Door and Shutter

Assemblies) Prior to Submission to ISO Council

Out of 24 P-members, there were 17 in favor (71% approval), with

1 abstention and 2 no response. A total of 26 members of ISO voted, with

22 in favor (including USA) ; 1 abstention (Finland) and 4 against (Belgium,

France, Italy and New Zealand).

There was a discussion of how to define glazed doors and whether a fully glazed door belongs in DIS 3008 (Door and Shutter Assemblies) or DIS 3009 (Glazed Elements). Three types were considered:

(a) Glass Door - consi

(b) Fully glazed Door

extent of glazing.

(c) Door with glazing

glazed element.

Later during the meeting it was decided to exclude fully glazed

doors from the defined scope of DIS 3009.

Para. 4.2 Canopy

After considerable disciassion, and In view of several strong objections to the canopy test (France, Belgium) and only minor support, the

canopy test was placed in Appendix 2 with this statement: This appendix

defines a Canopy test which was initially a part of the Standard, but in

view of comments made by members during the balloting, it is now included

for obtaining information on performance. It may be suitable for evalu2

sting entirely of glass with no frame.

- A framed door containing a maximum

- A wood or steel door containing a
ating initial or ultimate integrity... It needs further refinement to

increase sensitivity. It is described to enable laboratories to obtain

additional experience. (This change moves Paragraphs 4.2, 7.2 and 8.2.3

to the appendix; in the latter paragraph, the maximum and mean temperature

limits are replaced by a simple requirement that they be recorded)

.

Changes, mainly of an editorial nature to clarify the intent of the

standard in response to the comments received, were made in the following

paragraphs

:

5.1 Size; 5.3 Conditioning; 6. Test Procedure; 7.1 Furnace

Pressure; 7.3 Unexposed Face Temperature; 7.4 (Footnote) A sentence

was added: "Improved instruments are being developed by a working group

of ISO/TC92." This comment resulted from discussions in WGIO, in which

it was pointed out that at relatively low temperatures the sensitivity of

a radiometer with a mica window will be limited since a large portion of

the long wave-length radiation will not be transmitted through the window.

7.5 Cotton Pad Test (changed from "cotton wool"). Appendix 1. Paragraphs Z.5 Note to Section 6; Z.8 Note to 7.4; Z.12 Note to 8.3.

Agenda Item 5. Comments and Changes to ISO/DIS 3009 Fire Resistance

Tests of Glazed Elements

Out of 24 P-members, there were 15 in favor (62% approval), with 4 no response. A total of 27 members of ISO voted, with 22 in favor

(including USA) and 5 against (Austria, Belgium, Finland, France and

Italy)

.

The major change was the removal of the canopy test to an appendix

as in ISO/DIS 3008. Editorial and clarification changes were made in

Paragraphs 1 (Remove fully glazed doors from this standard and place in

ISO/DIS 3008); 4.2; 5.1; 5.3; 8.2.2; Appendix Z.2; Z.3; A. 9; and

figures 1, 2 and 3. Col. Curtis will prepare a revised document DIS 3009

for circulation back to WG3.

Agenda Item 6. Fire Tests for Lift Doors

Document 118, a draft proposal for fire tests of lift doors, was still in preparation and not available for discussion.

Agenda Item 7. Impact Tests for Doors

No report. To be carried over to agenda for next meeting.

Agenda Item 8. Test for Smoke Control Doors

Action deferred; is expected to form a major part of the next

session of WG3

.

Agenda Item 9. New Business

None

.

3
Agenda Item 10. Next Meeting

WG3 is planning to meet with WGll in France (week of November 18)

2. WORKING GROUP 10 ~ MEASURING INSTRUMENTS'*"

Fourth Meeting, London, March 26, 1974

PARTICIPANTS:

G. Bellisson, France, Chairman J. Dekker, Netherlands

J. C. Laurin, France J. Keough, Australia

P. Arnault, France P. Oksanen, Finland

J- P. Leroy, France H. Salmark, Denmark

A. Heselden, UK P. Topf, Germany

S. Thelandersson , Sweden D. Gross, U.S.A.

DOCUMENTS

:

(France-7) 30 + Annex

(France-9) 31F

(Germany- 2) 32

(Canada-1) 33

(Sec-6) 34F

(France-10) 34

(UK-11) 35

(Germany-3) 36

(Sec-6) 37F

(USA-4) 38

Construction and Assembly of a Thermopile

Heat Flux Meter (in French) by J-P. Leroy,

March 1974

Capteurs Dynamometriques de Compression Type RA

(in French)

Calibration of a Small Radiometer by Means of

a Black Body

Remote Measurement of Large Deflections in Fire

Tests by Lie and Berndt, April 1972

Report of the 3rd Meeting, Paris, March 1973

(in French)

Measurement of Temperatures in Furnaces of Fire

Resistance Tests, Sept. 1973 (in French)

An Electrical Source of High-Intensity Thermal

Radiation by H.G.H. Wraight , August 1973

Reception Angle and Influence of Cooling Water

Temperature on EMF of a Small Radiometer by

P. Topf, October 1973

Agenda for 4th Meeting, London, March 1974

Infrared Radiation Reference Sources and Standards,

Barnes Eng. Co., Bulletin 11-010 (1962)

1 Certain instruments and equipment are identified in this report since

they are mentioned as examples of commercial devices in the meeting

discussion. Such identification does not imply a recommendation, or that these instruments are necessarily the best available for the

purpose.

4
(UK-12) 39

(UK-13) 40

Guide to the Measurement of Thermal Radiation by

Means of the Thermopile Radiometer BS 4892 (1973)

Measurement of Gas Velocity in Flames and Combustion Products from Fires by G. Cox, Feb. 1974

Agenda Item 1. Opening of Meeting

Agenda Item 2. Approval of Report of 3rd Meeting

Agenda Item 3. Measurement of Temperatures in Furnaces (ISO R 834 Fire

Resistance Test, ISO R 1182 Noncombustibility Test)

P1C7

--bo

An extended discussion was held on the

relative merits of placing thermocouples

into the fire endurance furnace (cf positions

1, 2 and 3 from Document 34). Disadvantage

of Position 1 is that specimen deflection

changes distance d' (100 mm). Also, length

d should be sufficient to prevent excessive

conductive cooling. Alternate suggestions

included (a) bringing furnace thermocouple

along exposed surface of specimen and then

bend down 100 mm; (b) provide 2 or more

rows of horizontal thermocouples which

can be used in succession during test as deflection Increases. Mr. Arnault mentioned

that a considerable temperature gradient was noted in tests with water cooled columns.

See figure 2.

It was concluded that DIS 834 needs an annex with recommendations on how to locate

furnace thermocouples for tests or walls,

floors, beams and columns. However, it was generally agreed that the principal effort

should be in defining the heat balance in

furnaces

.

There was some discussion on how to measure the response time (time constant)

of furnace thermocouples and reference to

Document 17 (USA) , Bellisson suggested the use of a small furnace with a Meker Burner

No. 4 arranged to follow the standard time- p / 6 2. temperature, and the thermocouple mounted

in a fixed position. Another suggestion was that the fire resistance

furnace itself could serve to measure the time constant.

On the subject of measuring the temperature of steel members,

Mr. Keough pointed out the advantages of capacitive welding techniques

for securing thermocouples to the steel (based originally on information

5
supplied by Gustaferro) . Bellisson also mentioned that precautions are required to ensure the proper location of thermocouples to be embedded

in concrete specimens and to prevent water condensation effects.

Agenda Item 4. Measurement of Temperatures on Unexposed Surfaces

Mr, Arnault pointed out the problem resulting from condensation and

ponding of water (e.g. 3 mm deep) in the center of a concrete floor slab

and the soaking of the asbestos pad. Other comments related to the

blistering or intumescence of coatings and the differences in results

depending on whether the thermocouple was firmly held (by a spring) to

the surface, or allowed to move out with the expanding surface coating.

Mr. Dekker remarked that there was a need for a movable temperature

sensor, inasmuch as the principal interest should be in the maximum

temperature rise.

Agenda Item 5. Measurement of Radiation and Calibration of Instruments

This was a major discussion item, with the following documents

described in some detail (28, 39, 35, 36, 38, 30F/30A, 23).

Mr. Wraight's report (Document 35) describes a 4 lamp radiation

source operating at a blackbody temperature of over 1000 C and providing

a uniformly irradiated area of approximately 5 to 6 cm. It was designed

for comparing receiving instruments (radiometers) but may be used also

for ignition experiments. Each lamp is rated at 4 KW.

The Fire Research Station (FRS) is working on an absolute heat fluxmeter (water-flow calorimeter) for high irradiance levels (approximately

6 months away)

.

Dr. Topf's report (Document 36) describes the use of a 1250 W

halogen lamp to calibrate a radiometer used principally with the ignitability apparatus, but which can also be used with the spread-of-f lame

test. He investigated the Lambert Cosine Law relation and found that the

reception angle can vary between + 60° with an accuracy of + 4%. He

is seeking a commercial source for manufacturing the radiometer which is

suitable for 5 W/cm^ for up to 5 minutes (extended radiation may affect

the black coating)

.

Dr. Topf also discussed Dr. Minne's attempts to measure the temperature in the noncombustibility furnace by (a) radiation pyrometer,

(b) thermocouple and (c) narrow angle pyrometer.

'^^f, /,f These measurements were made successively, not

^''^ simultaneously and several possible explanations

for the wide temperature differences were offered,

Mr. Leroy gave a detailed description of

the design and construction details of a watercooled thermopile heat flux meter, suitable for

heat flux levels up to 12 W/cm^. It was suggested

for use in the spread of flame test and for the

unexposed surface of fire resistance specimens. 7cc c
Alan Heselden summarized the types of base line calibrations wliicli

FRS uses for reference to known

standards

.

! W P L

L

k-U Si .ivCa.? 0 P I'd

There was a discussion on radiation from and through glazing. Dr. Topf

has measured radiation from a single pane of prestressed glass. The glass

failed at 10 minutes when the furnace temperature reached 679°C and the

glass temperature was about 250 C. The measured radiation, using a 60"

radiometer was as follows:

2

(3 1 meter, 0.6 W/cm

(3 1/2 meter, 1.3 W/cm^

(3 30 cm, 2 W/cm"

With 2 layers separated by an air space, the assembly lasted 30 minutes.

Mr. Heselden and Dr. Topf stated the

desirability of examining whether the glass

radiation followed the cosine law, since it

would then be possible to use configuration

factors to calculate the radiation at

different distances and angles. To examine

this, it is necessary to rotate the radiometer (not the axis of the radiometer)

with respect to the central axis of the

window.

Dr. Topf also stated the overall desirable characteristics of a radiometer

:

(a) Small size sensor (minimize shadow effect)

(b) High sensitivity

(c) No window or lens

(d) Sufficiently large angle of view

(e) Use aperture of same shape as object (e.g. rectan^

for door) ; can be polished aluminum, but need not

^ular

be water-cooled

7
Agenda Items 6, 7 and 8

Were not discussed because of lack of time,

Agenda Item 9

Document 31F was a descriptive brochure for a strain gage type of

load cell (manufactured by BLH in USA) suitable for 600 C. Cost 1000

Francs. However, it was pointed out by Thelandersson that calibration

factors are not constant, that they are affected by moisture, and can only be used one time at high (fire) temperatures.

Agenda Item 10. Measurement of Furnace Pressure

In Ghent, furnace pressure is measured continuously. Australia uses

a Decker (USA) instrument with taps at one-third heights. Other com- mercial sources are Leeds and Northrup, Honeywell and Berri.

Agenda Item 11. Measurement of Oxygen Concentration

Several known commercial sources are Hartmann and Braun (paramagnetic type), Siemens, Serverex and Beckman.

Agenda Item 11.1 Moisture Content Within Specimen

Document No. 56F was received from ISO Committee 125 relating to

this. In addition, Thelandersson mentioned an expendable Swedish device

consisting of a porous material with a resistance wire which can be installed in a, '^^rs/ j r-^ 1

1

concrete. When the heat wave reaches the

sensor, the sudden drying causes a very

rapid increase in resistance. He will

try to supply information to WG3.

Agenda Item 12. Coordination with Other Groups

These items were introduced as resolutions:

A. Dr. Topf's radiometer to be further

developed for possible application to

measuring radiation from the radiant

panel (in the spread-of-flame test) and from doors.

The radiometer recommended for use in measuring radiation from

doors (DIS 3008) is unsuitable in its present form (because of

variation in sensitivity at low source temperatures)

.

C. The French fluxmeter to be developed further.

D. WGIO will plan to establish a Draft Proposal dealing with a fluxmeter for the Ignitability and Spread of Flame tests, and which

will contain limits of use (requirements) without a detailed

description of the instrument.
Agenda Item 13. Next Meeting

During the week of October 21-24, 1974 in Germany,

WORKING GROUP 11 FIRE RESISTANCE TESTS

Fourth Meeting, London, March 25 and 26, 1974

PARTICIPANTS:

K. Kordina, Germany, Chairman

F. Wesche, Germany

P. Oksanen, Finland

J. Dekker, Netherlands

G. Bellisson, France

J, C. Laurin, France

P. Arnault, France

J. Keough, Australia

H. L. Malhotra, UK

G. Hall, UK

F. C. Adams, UK

A. Curtis, UK

H. Salmark, Denmark

S. The lander sson , Sweden

D. Gross, USA

DOCUMENTS

:

(Sec-7) 25

(Sec-5) 26

(Cermany-5) 27

(Australia-3) 28

(Germany- 6) 29

(UK-3) 30

(France-1) 31

(Sweden-3) 32

(USA-4) 33

(USA-5) 34

(Sweden-4) 35

Report of Third Meeting of Working Group II

Agenda for Fourth Meeting, WG 11

Letter and Comments on ISO/DIS 834

Measurement of Temperature of Structural Steel

Members - Proposal for Addition to ISO/DIS 834

Test Methods and Criteria for the Fire Resistance of

Suspended Ceilings (Appendix to DIS 834)

(Untitled) Notes/Criteria for Loaded and Unloaded

Floor/Beam/ Ceiling Assemblies

.

Tests of Suspended Ceilings (in French)

INSTA 28 - Document No. 22, Fire Resistance Test;

Determination of Fire Resistance of Parts of Building

Construction

Comparison of E119 and ISO/DIS 834

Effect of Furnace Design on Fire Endurance Test

Results by L. G. Seigel

Connection Between Real Fire Exposure and Standard

Fire Resistance for Steel Structures

Agenda Items 1 and 2 (Opening and Approval of Previous Report)

Agenda Item 3

Postponed until 3/26.

9
Agenda Item 4. Heat Conditions of External Columns

Postponed due to absence of Professor Pettersson.

Agenda Item 5. Action on ISO/DIS 834

Each participant was asked to state his views on the actual and

recommended furnace pressures. Germany uses 1 + 0.5 mm H^O (but not

suitable for suspended ceilings); UK uses 1.5 mm H2O for integrity;

Sweden uses 2 mm H2O; France uses cold furnace overpressure (and underpressure) test to look for potential collapse, but leakage around edges

makes it difficult to overpressure with suspended ceilings. The fastening

method, although not for fire purposes, is important.

As for pressures in actual fires, this can vary from -0.5 mm

at floor level to 1.0 or 1.5 mm H2O at ceiling. Dr. Hall suggested that

1.5 mm H2O represented a limit value for the combined effect of fire and

wind. It was subsequently decided to recommend lowering the furnace

pressure from 1.5 mm H2O to 1.0 ram H2O.

Germany (and Belgium) requires 2 identical repeat tests for classification; the average or lower value is used. Professor Kordina mentioned

other considerations: the need for an additional shock (impact) test

for nonbearing (separating) elements; the use of the ISO cotton wool test

may be desirable to limit materials to "nonflammable". Dr. Hall mentioned

the Butcher and Fardell paper in which the wind and fire pressures were

separately estimated. Professor Kordina is planning some field fire tests

in a 4 story building in Braunschweig scheduled for demolition; he will

measure ceiling overpressure before and after the addition of a suspended

ceiling; he will also add external, unprotected columns; he will use oil

burners as well as wood cribs and furniture to examine fire growth and

the effectiveness of open and closed doors. Mr. Thelandersson then

mentioned Swedish tests of full size single family houses to investigate

fire spread as a function of separation distance. Wood cribs and

furniture will be used plus large fans to create wind. Professor Kordina

summarized briefly the preceding discussions and the status on DIS 834:

1. it is necessary to collect additional information on differences

between DIS 834 and national standards;

2. . the number of tests is questionable; (in ISO and UK only one; in

Germany, duplicate tests);

• - 3.. method needed for handling the integrity of a nonloadbearing

separating element during fire exposure;

4. suggestions for the appropriate furnace overpressure during tests

(including suspended ceilings);

5. additional information desirable on boundary conditions.

Mr. Keough pointed out the distinctions made in the Australian code

between a ceiling/floor construction where the ceiling serves to limit

the spread of fire to the floor above, and a ceiling/floor construction

10
where the ceiling serves to areas on the same floor. A

combustibles in the ceiling

limit the

criterion

cavity.

fire spread horizontally to other

of 325°F temperature limit on

Agenda Items 5.2.1 Comparison of Furnaces and 5.2.3 Fuel Feed to Furnaces

were postponed pending future reports.

Agenda Item 6. Roofs

Professor Kordina has discussed with Professor Herpol (WG7) the subject

of roof testing and'WG? is not concerned with exterior fire exposure, but

fire exposure from inside and the effects of snow/wind/fire loads.

Mr. Dekker stated that the new \ Dutch standard for exterior fire

exposure is similar to the German

standard, and deals with exposure to

the roof and exposure to a wall from a burning roof. The requirement is

that no combustible gases from the

roof construction be permitted to

enter through the windows of an adjacent building.

Information on fire exposure from

inside will be considered for inclusion in

DIS 834. Col. Curtis will ask Dr. Thomas

(Chairman TC92) whether test for exterior

fire exposure to roofs should be referred

to WG7 or other working group.

Agenda Item 7. Bearing Assemblies

The furnace at Metz is the only furnace currently suitable for com- posite (bearing assembly) structures. A series of special tests beginning

in June will examine the effects of 3 slabs on 3 columns with different

"hats" (arrangements of reinforcing bars) . Professor Kordina suggested

that information be collected on the displacement and rotation of beams, even if simply supported. Mr. Keough mentioned that

Australia is planning a small test program with

a flat plate under conditions of a) simple support,

b) restraint against horizontal expansion. The

load will be varied to produce the same de- v. , formation as before. r^-rL^^^Xl-l i \

• /'I ^

II
As an example of the differences between separate and composite

test results, Mr. Arnault offered the following:

Separate Ceiling Assembly CSTB test 4 hr

Separate Gypsum Partition CSTB test 4 hr (non load bearing)

Separate Door CSTB test 1 hr

Overall fire endurance less than 2 hr

(due to expansion of metal door frame, followed by exposure of partition,

deflection of ceiling, increased partition load, and subsequent collapse o partition)

.

Agenda Item 8. New Business/Future Work

Mr. Dekker noted that the O2 content of the furnace affects ignition

of cotton wool; he measured 10% O2 at ignition at 20 min, and 0 to 6% O2 a ignition at 30-40 min. There was some discussion on the possibility of

finding a material (e.g. fully nitrated cellulose nitrate or polystyrene)

whose ignition will not depend on O2 content of furnace. Alternately, it was suggested that a prescribed O2 content (10%) could be obtained (and

required) by the addition of air. While Mr. Oksanen felt that the furnace

©2 content affected burning rates, Mr. Keough felt it did not.

Mr. Oksanen mentioned the use of a box device to collect gases from

all large and small cracks. Professor Kordina requested that members

record the temperature at cracks where cotton wool would be used and the

temperature at vzhich ignition occurs.

A slight revision was suggested to the proposed addition to ISO/DIS

834 by Keough. This would include the following additional sentence

relating to measuring the temperature of structural steel members: "In

selecting the sections chosen for temperature measurement, the laboratory

should keep in mind the possible location of heat flow paths and the

presence of joints."

Agenda Item 9. Suspended Ceilings

Mr. Malhotra joined the group on Tuesday and amplified the statement

that furnace overpressure was required only to assess the effect of

integrity. It was felt that in the early part of the test (0-10 minutes)

it was difficult to control pressure. Based on small-scale tests, the

effect of pressure on the FET of suspended ceilings may be + 30 to 40%.

Whereas U.L. uses a continuous concrete floor to evaluate suspended

ceilings, UK uses concrete slabs (in sections) over steel beams witli die

suspended ceiling.

There was additional discussion on- the boundary conditions (e.;^,

.

trim strips around furnace), the number of supporting beams, det lection

due to application of load, etc., all directed toward estimating or controlling the pressure drop and the passage of hot gases through Liu.- floor cavity which could increase the beam temperature more quickly.

1 2
Schemes were suggested for sealing the furnace wall edges with asbestos

cloth and sand, Kaowool, etc. As a result. Professor Kordina offered to

prepare another document which will contain as many of the thoughts and

positions presented by the members as possible.

Next meeting, November, 1974 in France.

13
NBS-n4A (REV

U S. DEPT. OF C;.)MM BIBLIOGRAPHIC DATA

SHEET

1. ITh!. i' A i 1. 1\ Oi; |< !

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NBSIR '74-575

4. TITLE AN'l-s Sl'MTlTl l

MEETINGS OF WG 3, 10 AND 11 OF ISO/TC 92, MARCH ;5-29, 1974

7. AL'THOR(S)

D. Gross

9. PLRFORMING ORGANIZATION NAMl- AM'' ^nOR l-SS NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, D.C. 20234

12. Sponsoring Organization Name anJ ('Dnipjit: AJdrcs-, (Street. Ci:y, Stale. /IIP) Same as no. 9

3. Kcrip,,

5. Publ i< ai n It r September 1974

6. Pcrfoiiiiin^' Organization f oJi

8. PerfurminK <)ri>an. Report No. NBSIR 74-575

10. ProicLt/Task Work Unit Nn. 4906195

11. f ontrai t Grant No.

13. Type of Report & Period Covered

Progress Report

14. Sponsoring Agency C-od<

15. SUPPI.EMFNTARY NOTl-S

16. ARSTRACl (A 200-word or /ess factual summary of most significant information If documeni includes a significant

bibliography t literaturt- survey, mention it ht-re.) Meetings of three ISO/TC 92 Working Groups on Door Assemblies, Measuring Instruments

and Fire Resistance Tests were hold in London and Boreham Wood, England during the week

of March 25-29, 1974. The principal agenda items were (a) resolution of comments from

the ballots on Draft International Standard iSO/DIS 3008 Fire Resistance Tests on Door

and Shutter Assemblies and on Draft International Standard ISO/DIS 3009 Fire Resistance

Tests on Glazed Elements, (b) fire test instrumentation and (c) development of a test

method for suspended ceilings.

17. KP'Y Vl'ORDS (six to 'welve entries; alphabetical order, capitalize only the first letter of the first key v,ord unless a proper name: separated by s>-micoions) Door assemblies; fire endurance; fire tests; ISO/TC 92;

suspended ceilings; windows.

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Order From Sup. of Doc, li.S. Government Printina Office »ashinKton, D.C. 20 lO:. SD Gat. No. CA^

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