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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
8/10/2019 710- Marine Ply Wood
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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.
8/10/2019 710- Marine Ply Wood
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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
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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
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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 ~
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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
8/10/2019 710- Marine Ply Wood
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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 ).
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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
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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
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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
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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
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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
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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
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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
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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
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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 )
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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
8/10/2019 710- Marine Ply Wood
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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