710- marine ply wood

8/10/2019 710- Marine Ply Wood

1/18

I ndian Standard

IS:710- 1976

(

eaffirmed 1994 1

SPECIFICATION FOR MARINE PLYWOOD

First Revision )

Gr4

October 1976

Fourth Reprint JUNE 1998

( JncorporatingAmendment No. 1)

UDC 674-419.32:629.12

@ Copyright 1980

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 1 lOW2


2/18

IS : 710 - 1976

(Reaffirmed 991 )

Indian Standard

SPECIFICATION FOR MARINE

First Revision

PLYWOOD

Wood Products Sectional Committee, BDC 20

Chairman

sHR1 A. c. SEKHAR

Representing

Forest Research Institute and Colleges, (Timber

Mechanics Branch ), Dehra Dun

Members

A~~IS-~ANT DIRECTOR ( SPECIFI-

CATIONS ),

RDSO, LUCKNOW

SHRI J. BAIN

SHRI P. R. CHANDRASEKHAR

SHRI L. N. DOKANIA

Ministry of Railways

Indian Tea Association, Calcutta

Directorate General of Civil Aviation, New Delhi

Federation of Indian Plywood and Panel Industry,

New Delhi

SHRIM. R. MOTAYED ( Afternate

)

DR JOSEPH GEORGE

Indian Plywood Industries Research Institute,

Bangalore

DR D. C. ROY (

Alternate )

SHRI M. A.

ISLAM

Forest Department, Government of Assam

SHRI A. K; KADERKU~TY

The Western India Plywood Ltd, Baliapatam

( Kerala )

SHRI K. S. LAULY

The South Indian Plywood Manufacturers Asso-

ciation, Calicut

SHRI THOMASPAUL (

Alternate

)

SHRI G.R. MAVINKURVA

Forest Department, Government of Karnataka

SHRI Y. M. L. SHARMA

Alternate )

SHRI P. V. MEHTA

Directorate General of Technical Development,

New Deihi

LT-COL S. A. MOHILE Ministry of Defence ( R D

)

SHRI B. B. MEHTA (

Alternate )

SHRI M. R. MO~AYED

Plywood Manufacturers Association of West

Bengal, Calcutta

SHRI S. K. DUTTA (

Alternate

)

DR A. N. NAYAR In personal capacity (

117/K/18D Sarvodaya Nagar,

Kanpur

)

SHRI D. E. NEALE

United Planters Association of Southern India,

Cochin

DR R. S. RATRA

National Buildings Organization, New Delhi

(Continued on page 2

)

I

3 Copyrfght r9180

BUKEAU 01: - TNDIAR STANDARDS

This publication IS protected under the

Indian Copyright Act

( XIV of 1957 ) and

reproduction in whole or in part by any means except with wrltten permission of

the publisher shall be deemed to be an infringement of copyright under the said Act.


3/18

IS:710 -1976

Continued from page 1 )

Members

SHRI P. R. RDSINGHANI

Representing

MAJ M. GOSWAMI

Alternate )

Engineer-in-Chiefs Branch, Army Headquarters

SHRI S~ARAN

SINGH

Directorate General of Supplies and Disposals

New Delhi

DR S. M. Sf%$f$

Central Building Research Institute (CSIR )

Roorkee

.-- .^.__

SHRI ARJUN DAS ( Alternate )

SUPERINTENDING SURVEYOR OF Central Public Works Denartment. New Delhi

WORKS ( II )

SHRI H. THOMSON

Sitapur Plywood Manufacturers Ltd, Sitapur

SHRI G. W. M. WHITTLE Alternate )

SHRI D. V. VERMA

Ministry of Defence ( DGI )

SHRI NORMALINGH Alternate )

SHRI D. AJITHA SIMHA,

Director

(

Civ Engg )

Director General, BIS ( Ex-oficio Member )

Secretary

SHRI J. R. MEHTA

-Deputy Director ( Civ Engg ), BIS

Plywood Subcommittee, BDC 20

: 1

SHRI

A. K. KADERKUTTY The Western India Plywood Ltd, Baliapatam

( Kerala )

Members

SHRI B. ANANDASWAMY

SHRI J. BAIN

SHRI BALIABISWAS

Central Food Technological Research Institute

( CSIR ), Mysore

Indian Tea Association, Calcutta

Calcutta Tea-Chest Fittings Manufacturers Asso-

ciation, Calcutta

SHRI B. K. KHAITAN ( Alternate )

SHRI P. R. CHANDRASEKHAR

Directorate General of Civil Aviation, New Delhi

SHRI P. G. DESHMUKH

Indian Institute of Packaging, Bombay

SHRI

C. S.

PURUSHOT~~MAN

Alternate )

SHRI M. K. DUTT

Tea Board, Calcutta

DR K. K. MITRA ( Alternate )

DR JOSEPH EORGE

Indian Plywood Industries Research Institute,

Bangalore

SHRI V. SIVANANDA Alternate )

SHRI C. P. GOENKA

Indian Tea-Chest Battens Manufacturers Asso-.

ciation, Yamunanagar

SHRI J. N. KAPUR ( Alternate )

DR R. C. GUPTA

Forest Research Institute and Colleges ( Wood

Composite Branch ), Dehra Dun

SHRI P. V. MEHTA

Directorate General of Technical Development,

New Delhi

(

Continued on page 13 )

2


4/18

Pd

an Standard

SPECIFICATION FOR MARINE

First Revision

0

FOREWORD

IS:710- 1976

PLYWOOD

0.1

his Indian Standard ( First Revision ) was adopted by the Indian

Standards Institution on 8 June 1976, after the draft finalized by the Wood

Products Sectional Committee had been approved by the Civil Engineering

Division Council.

0.2 The plywood used in the construction, repair and maintenance of

marine and river craft is required to withstand rigorous conditions involv-

ing changes in temperature, humidity and alternate wetting and drying. In

addition, they also need to withstand attack by marine organisms. As

such, the commercial plywood used for general purposes was found to be

unsuitable and the Wood Products Sectional Committee, at the instance of

the Ministry of Defence, has prepared this specification for marine

plywood.

0.3 The method of manufacture of marine plywood, especially the adhesives

used in the manufacture, have been specifically stated so that the resulting

plywood is capable of withstanding the rigorous conditions which marine

plywood may have to withstand.

0.4 This standard was first published in 1957. The present revision is based

on the experience gained in the manufacture and use of the marine plywood

overrthese years. In this revision, details of methods of tests have been

omitted and cross -references given to the relevant methods of tests in

IS: 1734 ( Parts I to XX )-1972*.

0.5 This standard contains clause4.2.3.4 which calls for agreement between

the purchaser and the manufacturer.

0.6 In the formulation of this standard due weightage has been given to

international co-ordination among the standards and practices prevailing

in different countries in addition to relating it to the practices in the field

in this country.

0.7 For the purpose of deciding whether a particular requirement of this

standard is complied with, the final value, observed or calculated, expressing

the result of a test or analysis, shall be rounded off in accordance with

IS : 2-19607. The number of significant places retained in the rounded off

value should be the same as that of the specified value in this standard.

*Methods of tests for plywood ( Parts I to XX ) ( first revision .

tRules for rounding off numerical values ( revised .

3


5/18

IS : 710 1976

1. SCOPE

1.1 This standard covers requirements for materials, manufacture and per-

formance of marine plywood suitable for the construction, repair and

maintenance of marine and river craft, pontoons and the like.

2. TERMINOLOGY

2.1 ~


6/18

TRADE NAME

BOTANICAL NAME

ABBREWATKTN

FOR MARKING

i.1)

Aini

Birch

Bclnsum

Champ

Chaplash

Chickrassy

Gurjan

Hollock

Hollong

Kathai

Mahagony

Maple

Mango

Mullilam

Nedunar

Pali

Poon

Rosewood

Sandan

Sissoo

Teak

Vellapine

Walnut

Whiteceder

(2)

Ar tocarpus hi rsutus

Betula

sp.

Phoebe sp.

n ich4ra sp.

Ar toowrpus chapiasha

Chukrasia velutina

( Syn. C.

tabularis

)

Dipterocarpus sp. ( other than

D. macrocarpus

)

Terminaliu myr iocarpa

Dipterocarpus macroarpus

Ar tocarpus heterophylk

( Syn. A. integrifolius )

Swietenia

sp.

Acer

sp.

Mangifera indica

Zanthoxylum rhetsa

( Syn. Fagara budrunga )

Poly hia

sp.

Palacquium eIl iptioum

Calophyllum sp.

Dalbergia l atifolia

Ougein ia oojeinensis

( Syn. 0. dalbergioides

)

Dalbergia sissoo

Tectona grandis

Vateri a indica

Juglans sp.

Dysoxylum malabaricum

(3)

AIN

RIR

BON

CFJM

CIIF

CHI

GUR

HOL

HON

KAT

MAO

MAP

MAN

MUX

NED

PAL

PO0

ROS

SAD

SIS

TEA

VEL

WAL

WCE

5


7/18

IS

: 710 - 1976

3.1.1 No alternative species of timber shall be used without the prior

approval of the purchaser.

3.1.2 In selecting the species for the manufacture of plywood, it is

recommended that as far as possible a single species of timber shall be used

and where combinations of different species are used, care shall be taken to

prevent incompatibility of the two species:

3.2 Adhesive - The adhesive used for bonding the veneers shall be of the

hot-press synthetic resin, phenol formaldehyde ,type ( BWP ) and shall

conform to IS : 848-1974*.

Extender shall not be added to the adhesive by

the plywood manufacturer.

Fillers, if used, shall not exceed 10 percent by

mass of solid content, of the glue.

4. MANUFACTURE

4.1 Veneers

- The veneers shall be either rotary cut or sliced. The veneers

shall be reasonably smooth to permit an even spread of glue.

The veneers

shall be conditioned to a moisture content not exceeding 10 percent before

bonding.

4.1.1 Defects in Veneers - The veneers to be used for the faces shall be

free from sapwood. Core veneers may contain sound knots whose

maximum dimensions in any one direction do not exceed 5 cm, open

defects ( split and check ), provided such defects do not impair the smooth

finish of the surface required for paintink or staining.

Dead knots shall

not be permissible.

Overlaps or pleats shall not be allowed.

,4.2 Assembly

4.2.1

Glueing -

The glue shall be evenly spread and the veneers shall be

securely cemented together without overlap. No unglued areas or starved

joints shall be found on separation of veneers.

4.2.2

Thickness of Veneers-The

thickness of veneers shall be uniform

,within a tolerance of &5 percent, Corresponding veneers on either side of

the central plane of the board shall be of the same thickness and species,

and shall be cut by the same method, that is, either all rotary cut or all

sliced.

4.2.2.1 In the case of 3-ply boards, the thickness of the centre veneer

( core ) shall be at least equal to that of one of the face veneers, but shall

not exceed the combined thickness of the two face veneers.

In the case of

multi-ply boards the thickness of any veneers shall not exceed twice the

thickness of any other veneer in the same board.

*Specification or synthetic

resin adhesive for plywood ( phenolic and aminoplastics)

( f i rst r evision ).


8/18

IS : 710 - 1976

4.2.3 Joint in Veneers

4.2.3.1 Veneers, which require to be jointed to form a ply, shall be

spliced before assembly. All joints shall be cut square.

Tapes, other than fusible tapes, shall not be used internally and when

used for making edge joints or repairing splits in face veneers they shall be

removed subsequently.

Fusible tapes shall be such that they are converted in the process of

manufacture, to an adhesive that complies with the test requirements

applicable to the adhesive used for the manufacture of the plywood.

4.2.3.2

Edge joints -

Edge joints in veneers shall be made on a tape-

less splicer or by fusible tape and staggered not less than 2.5 cm as between

any veneer and the next one with the same grain direction on both the faces.

4.2.3.3 End joints -

End joints shall be permitted in all veneers form-

ing the core ply and in the veneers of face plies of panels provided the

length of such panels is over 2 m.

All such joints shall be accurately

scarfed with an inclination not steeper than 1 in 10 and bonded with an

adhesive complying with the requirements specified under 3.2.

4.2.3.4

Scarf joints

- When sizes larger than available press size are

required, boards to the required size shall be made with proper scarf joints

through the thickness of the board, with the prior approval of the

purchaser. The number and location of scarf joints shall be as agreed to

between the purchaser and the manufacturer.

All scarf joints shall be bonded with the same adhesive used for the

manufacture of the plywood and shall be made with an inclination not

steeper than 1 in 10. The species of timber in corresponding plies of

adjacent board scarfed together shall be the same.

4.2.4 Grain Direction

-

Unless otherwise specified by the purchaser and

except in boards comprising an even number of plies, the direction ofgrain

of the veneer in adjacent plies shall be at right angles to each other and

that of the outer plies shall run parallel to the length of the sheet. In

boards comprising an even number of plies the grain of the centre pair shall

follow the same direction. In adjacent plies in which the grains are required

to be at right angles to each other, a deviation not exceeding 10 may be

permitted. In all cases the grain on both faces of the assembled boards

shall run in the same direction.

The grain of the veneer shall normally be parallel to the edges of

rectangular boards, but other grain direction, for example diagonal, may be

agreed to between the purchaser and the supplier.

7


9/18

IS : 710 - 1976

43.1

Prel imi nary Treatment - Immediately the boards are taken out of

Ihe press and whilist still hot they shall be immersed at room temperature

in a 2 percent solution of either sodium pentachlorophenate or boric acid

and borax or a combination of sodium pentachlorophenate and borax in

water, for a period of 5 minutes and allowed to dry.

NOTE 1

- The above preservative treatment is for according adequate protection

to marine plywood in storage.

This treatment, however, may not accord adequate

protection to marine plywood under actual service conditions.

NOTE 2 - Sodium pentachlorophenate is likely to precipitatr- on a~:;ditIcation.

It

should, therefore, be periodically checked and brought to proper conccatration.

4.3.2 Permanent Treatment -

When the plywood is used under marine

conditions like pontoons and river crafts the treatment given in 4.3.21 shall

be given.

4.3.2.1 The board shall be given treatment by pressure impregnation

with fixed type either water soluble or oil-based preservatives and having

retention of a minimum of 12 kg/m3 in case of copper-chrome-arsenic

composition or acid copper chrome composition or 100 kg/m3 in case of

creosote or creosote-fuel oil composition as specified in Appendix A of

IS: 5539-1969*, with adequate penetration.

NOTR

When marine plywood is given treatment as mentioned under 4.3.2, treat-

ment given under 4.3.1 shall not be necessary.

4.4 Moisture Content -

Finished plywood boards shall have a moisture

content of not less than 5 percent and not more than 15 percent at any

time of the year depending on the part of the country where the test is

carried out ( see IS : 287-1973t ).

5. DIMENSIONS

5.1 The dimensions of &ywood boards shall be quoted in the following

order: the first dimension shall represent the length, that is, the dimension

parallel to the grain of the face veneers; the second, the width; and the

third, the thickness.

5.2 The thickness of any board shall not exceed the number of plies

multiplied by 2.5 mm. The two-face veneers in the finished board shall be

of the same nominal thickness.

*Specification for preservative treated plywood.

tRecommendations for maximum permissible moisture content of timber used for

different purposes (

second revision ).

8


10/18

iS:710-1976

6. OLERANCES

6.1 The following tolerances in the nominal sizes of finished boards shall

be permit ted:

Dimension

Nominal Size

Tolerance

Length

Upto 120cm

t3mm

Above 120 cm

+6 mm

Width Up to 90 cm

t3 mm

Above 90 cm

+6 mm

Thickness Up to 4.mm

f 10 percent

Above 4 mm

f5 percent

7. WORKMANSIIIP AND FINISH

7.1 The face and back of the finished panels shall be free from checks,

splits, gaps ( subject to provisions given in 7.4 ), blisters, harmful dis-

colouration, any kind of decay, pleats and gverlaps, insect holes, dead or

100s~ knots and live knots whose maximuni dimensions in any direction

exce& 25 mm.

The plywood shall be free from wrap.

7.2 Sound knots of diameter 25 mm and less shall be permitted provided

the centre to centre distance between any two such knots is not less than

30 cm.

7.3 The face shall be. free from any patches, but on the back, patches at

distances of not less than 60 cm apart shall be permissible. The maximum

dimension of any one patch shall be not more than 4 cm.

7.4 Splits, gaps and open joints shall not be permitted in core. These may

be permitted in face provided the gap or opening does not exceed a width

of 05 mm. If exceeding OS mm this may be rectified by well fitted veneer

inserts of a minimum width of 5.0 mm provided the grain of tbe veneer

does not exceed in deviation by more than 10 percent from the grain

direction of the surrounding veneer.

7.5 The finish shall be reasonabljr smooth and sanding shall be given to

both the sides if so required by the purchaser.

7.6 The minimum width of the veneers used in face and back of the boards

shall be not less than 7.5 cm except at the edges where it may be less. The

edge of the board shall be trimmed square.

8, TESTS

8.1 est pieces cut from each of the board selected as specified under 10

shdl e subjected to tests stipulated under 8.1.1 to 8.15

9


11/18

IS:710-1976

8.1.1

oisture Content

- The moisture content of test pieces cut from

each board selected as under 8.1 shall not eyceed 15 percent nor be less than

igP7e2;2entwhen determined by the method described in IS

:

734 (Part I )-

8.1.2 Glue Adhesion in Dry State

8.1.2.1 Glue shear strength

- When tested for glue adhesion by the

method described in IS

:

1734 (Part IV )-1972t the average failing load shall

be not less than 1323.9 N ( 135 kg) and no individual value shail be less

than 1078.7 N ( 110 kg ).

8.1.2.2 Adhesion of pli es - The adhesion of plies shall be tested by

forcibly separating the layers.

The veneers shall offer appreciable resis-

tance to separation and the fractured samples shall, show some adherent

fibres distributed more or less uniformly.

Adhesion may also be tested by

knife test method described in IS: 1734 (Part V)-19722.

NOTE - In case, a definite result is not obtainable by the method described in

IS: 1734 (Part IV)-1972t, the result ofknife test described in IS: 1734 (Part V)-19722

shall be considered as decisive. In case of even number of plies where the grains of

central plies follow the same direction the result ,+s obtained from knife test shall be

considered final.

8.1.3 Water Resistance Test

-Six test pieces each approximately

25 x 10 cm, shall be cut from any position in the board such that the grain

of the face veneer is parallel to the length of the piece.

These specimens

shall be kept submerged in a pan of boiling water for a period of 72 hours.

The period of 72 hours for boiling may be a continuous period or an

aggregate of smaller periods of boiling if the test piece is left in cold water

between these smaller periods.

These test pieces shall then be removed

from the boiling water and cooled down to room temperature by plunging

them in cold water. These test specimens, while still in wet condition, shall

be subjected to tests described under 8.1.3.1 and 8.1.3.2.

8.1.3.1 Glue shear . en h -When tested for glue shear strength by

the method described in IS: 1734 (Part IV)-1972t the average failing load

shall be not less than 980.7 N ( 100 kg) and no individual value shall be

less than 784.5 N ( 80 kg).

8.1.3.2

Adhesion of plies -

The adhesion of plies shall be tested by

forcibly separating the layers. The veneers shall offer appreciable resistance

to separation and the fractured sample shall show .some.adherent fibres dis-

tributed more or less uniformly.

Adhesion may also be tested by knife test

method described in IS : 1734 (Part V)-1972:.

*Methods of tests for plywood: Part I Determination of density and moisture content

( firs1 revision ).

tMethods of tests for plywood: Part IV Determination of glue shear strength

( firsf revision ).

SMethods of tests for plywood: Part V Test for adhesion of plies ( first revision ).

10


12/18

IS : 710 1976

IS%%

-

In case a definite result is not obtainable by the method described in

(Part IV)If972*,the result of knife test described in IS:1734 (Part V)-1972t

shall be considered as decisive.

In case of even number of plies where the grains of

central plies follow the same direction the result as obtained from knife test shall be

considered final.

8.1.4 Tensile Strength - The tensile strength when determined by the

method described in IS: 1734 (Part 1X)-1972$ shall comply with the

following values. If the plywood contains scarf joints, half the specimen

subjected to testing shall contain the joint.

4

b)

4

It shall be not less than 411 kN/m* (420 kgf/cm2) in the direction

parallel to grain direction of the face veneers.

It shall be not less than 245 kN/m2 (250 kgf/cm2) in the direction

of right angles to the grain direction of the face veneers.

The sum of the tensile strength in both directions shall be not less

than 845 kgf/cm2.

8.1.5

M ycol ogi cal Test -

The test for resistance to micro-organism shall

be carried out, when required, by the method described in IS: 1734

(Part VII )-1972s. The test piece shall:

a) show no appreciable signs of separation at the edges of the

veneers, and

.

b) comply with the requirements specified in 8.i 3,

9. MARKING

9.1 Each plywood board shall be legibly and indelibly marked or stamped

-with the following particulars along with such other marks as the purchaser

may stipulate at the time of placing order:

a) Manufacturers name, initials or recognized trade-mark, if any;

b) Year of manufacture;

c) Abbreviations indicating the species of timber used in each ply, as

indicated in co1 3 of Tables 1 and 2; and

d) Batch number.

*Methods of tests for plywood: Part IV Determination of glue shear strength

(

fi rst revision ).

tMethods of tests for plywood: Part V Test for adhesion of plies ( fi rst remXon ).

SMethods of tests for plywood: Part IX Determination of tensile strength ( first

revision

) .

$Methods of tests for plywood: Part VII Mycological test

(

fi rst r evision )

11


13/18

IS : 710 - 1976

, 9.1.1 The plywood board may also be marked with the Standard Mark.

NOTE

The use of the Standard Mark is governed by the p&visions of the

Bureau of Indian Standards Act, 1986 and the Rules and Regulations made there-

under. The Standard Mark on products covered by an Lndian Standard conveys

the

assurance that they have been produced to 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 producer. Standard

marked products are also continuously checked by BIS for conformity to that

standard as a further safeguard.

Details of conditions under which a licence. for

the use OF the Standard Mark may be granted to manufacturers or producers may

be obtained from the Bureau of Indian Standards..

10. SAMPLING

10.1 The method of drawing representative samples and the criteria fo

conformity shall be as prescribed iit, IS : 763%1975*.

11. TENDER SAMPLE, INSPECTJON AND ACCEPTANCE

14.1 Where, samples are required to be tendered, three samples, each not

less than 90x60 rnk in size shall be submitted by the supplier, and these

samples, if the tender is accepted, shall constitute the standard as regards

the type of timber, quality and finish.

*Methods of sampling of plywood.

12


14/18

IS : 7dQ 1976

( Continued rom page 2

)

iMember

Represent g

LT-COL S. A: MOHILE

SHRI . B. MEHTA

(

Ahernate )

Ministry of Defence R 8r D )

SHRI S. K. SAN~ANARIA

Assam Plywood Manufacturers Association,

Tinsukia

SARI N. P. NAIR (Alternate )

SHRI 4.6. SEKHAR

Forest Research Institute and Colleges Timber

Mechanics Branch ), Dehra Dun

SHRI R. K. TALUKDAR

Plywood Manufacturers Association of West

Bengal, Calcutta

SHRI S. K. DUTTA Alternate )

SHR~H. THOMSON

Sitapur Plywood Manufacturers Ltd. Sitapur

SHRI PURSHOTAMDAYAL Alternate )

SHRI N. VENKATARAMAN The South Indian Plywood Manufacturers Asso-

ciation, Calicut

SHK~THOMAS PAUL AIQrnate )

13


15/18

BUREAU OF INDIAN STANDARDS

Headquarters

Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002

Telephones: 323 0131,323 3375,323 9402

Fax : 91 11 3234062, 91 11 3239399, 91 11 3239382

Central Laboratory

:

Plot No. 2019, Site IV, Sahibabad Industrial Area, Sahibabad 201010

Regional Off ices

Telegrams Manaksanstha

(Common to all Offices)

Telephone

8-77 00 32

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002

323 76 17

*Eastern : l/l 4 CIT Scheme VII M, V.I.P. Road, Manrktola, CALCUTTA 700054

337 86 62

Northern : SC0 335336, Sector 34-A, CHANDIGARH 160022 60 38 43

Southern

:

C.I.T. Campus, IV Cross Road, CHENNAI 600113 235 23 15

fWestern : Manakalaya, E9, Behind Marol Telephone Exchange, Andheri (East),

832 92 95

MUMBAI 400093

Branch Offices::

Pushpak, Nurmohamed Shaikh Marg, Khanpur, AHMEDABAD 380001

SPeenya Industrial Area, 1 st Stage, Bangalore-Tumkur Road,

BANGALORE 560058

550 13 48

839 49 55

Gangotri Complex, 5th Floor, Bhadbhada Road, T.T. Nagar, BHOPAL 462003

55 40 21

Plot No. 62-63, Unit VI, Ganga Nagar, BHUBANESHWAR 751001 40 36 27

Kalaikathir Buildings, 670 Avinashi Road, COIMBATORE 641037

21 01 41

Plot No. 43, Sector 16 A, Mathura Road, FARIDABAD 121001

8-28 88 01

Savitri Complex, 116 G.T. Road, GHAZIABAD 201001 8-71 19 96

5315 Ward No.29, R.G. Barua Road, 5th By-lane, GUWAHATl 781003 5411 37

5-B-56C, L.N. Gupta Marg, Nampally Station Road, HYDERABAD 500001 201083

E-52, Chitaranjan Marg, C-Scheme, JAIPUR 302001 37 29 25

117/418 B, Sarvodaya Nagar, KANPUR 208005

21 68 76

Seth Bhawan, 2nd Floor, Behind Leela Cinema, Naval Kishore Road, 23 89 23

LUCKNOW 226001

NIT Building, Second Floor, Gokulpat Market, NAGPUR 440010 5251 71

Patliputra Industrial Estate, PATNA 800013 26 23 05

Institution of Engineers (India) Building 1332 Shivaji Nagar. PUNE 41 1005

32 36 35

T.C. No. 14/l 421, University P. 0. Palayam, THIRUVANANTHAPURAM 695034

%21 17

*Sa)es Office is at 5 Chowringhee Approach, P.O. Princep Street, 27 10 85

CALCUTTA 700072

tSales Office is at Novelty Chambers, Grant Road, MUMBAI 400007

SSales Office is at F Block, Unity Building, Narashimaraja Square,

BANGALORE 560002

309 65 28

222 39 71

Printed at Dee Kay Printers. New Delhi I1001.5. lndm


16/18

AMENDMENT NO. 2

JULY 1980

TO

IS : 710-1976 SPECIFICATION FOR

MARINE PLYWOOD

First Revision )

Addendum

( Page 4, Table 1

- Add the following new matter at the appropri-

ate place under respective columns:

TRADE NAXE

(1)

H0ll011g

BOTANICAL WAME

i?)

Uiptrroiarpu~ mncrorarpus

ABBREVIATION

POH ?rI. Rb-ING

(3;

HOS

BDC 20 )

Printed at Dee Kay Printers, New Delhi-l 10015, India


17/18

BHENDMENTNo.3

JANUARY 1987

TO

IS:710-1976 SPECIFICATION FOR MARINE PLYWOOD

(First Revision)

(Page 4, Table 1)

- Add the following in

Table 1 at appropriate places:

Trade Name

Gurjan

Botanical Name

Abbreviation

for Marking

Dipterocarpus sp. GlJR

Makai

Mundani

Shorea sp.

Acrocarpus Fraxinifolius MUN

winht

(Page

5,

Table 2)

- Add the following in

Table 2 at appropriate places:

Trade Name

Makai

Mundani

(Page 8,

(Page 8,

4.3.1.

(Page 8,

BDC 20)

Botanical Name Abbreviation

for Marking

Shorea sp.

Acrocarpus Fraxinifolius MUN

wight

clauses 4.3.1 and 4.3.2) - Delete.

clause 4.3.2.1) - Renumber 4.3.2.1 as

clause 4.3.2.1,Note) - Delete.

Printed

at ee

ay Printers, Ndw Delhi-110015. India


18/18

AMENDMENT NO 4 FEBRUARY 2 1

TO

IS 71 :1976 SPECIFICATION FOR

MARINE PLYWOOD

F i r s t Re v i s wn

Rzge 11, clause

8.1.S I n ser t

the following new clause at the end:

8.1.6

etentwn of reservative

Boards shall have a retention of minimum

12 kg/m3 in case of eop~er-chrome-arsenic composition or acid-coppe-chrome

composition or lW kg/m in case of cre ote-fuel oil composition when tested in

Taccordance with IS 2753 Part 1 : 1991

Page 11, foot notes Insert the following footnote at the end:

llMethoda for estimation of preaervativaa in treated timber and in treating solutions Part 1

Determination of copper, arzenic, zin~ boron,crcoaoteand fueloil @ revision .

CED 20

Reprography l-hti~BIS, NewDelhi, India

710- marine ply wood

Documents