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भारतीय मानक IS 303 : 2024

Indian Standard

सामान्य प्रयोजन के लिए प्िाईवडु — लवलिलि

( चौथा पुनरीक्षण )

Plywood for General Purposes —

Specification
( Fourth Revision )

ICS 79.060.10

 BIS 2024

भारतीय मानक ब्यरू ो

BUREAU OF INDIAN STANDARDS
मानक भवन, 9 बहादरु िाह ज़फर मार्ग, नई लदल्िी - 110002
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI - 110002
www.bis.gov.in www.standardsbis.in

May 2024 Price Group 7

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Wood and Other Lignocellulosic Products Sectional Committee, CED 20

FOREWORD

This Indian Standard (Fourth Revision) was adopted by the Bureau of Indian Standards, after the draft finalized
by the Wood and Other Lignocellulosic Products Sectional Committee had been approved by the Civil
Engineering Division Council.

The standard requirements for general purpose plywood was first published in 1951, which was then revised in
1960, 1975 and 1989. In the second revision, for grades of plywood band on the adhesive type used and ten types
of plywood band on the visual on features of the face and back of the plywood were introduced, thereby
providing a total of 40 clauses. In the third revision of the standard, BWR and CWR Grades of plywood were
deleted and the WWR Grade plywood was replaced with MR Grade. Further, band on appearance, only 3 types
of plywood were retained then.

In this revision, the following major modifications have been incorporated:

a) Material clause for timber has been modified;

b) BWP (boiling water proof) grade has been added;
c) The clause on extender has been modified;
d) Dimension related clause has been modified;
e) Mycological test is now applicable for all grades;
f) Modulus of rupture (MOR) and modulus of elasticity (MOE) requirements have been modified;
g) Requirements for formaldehyde content for oven dry board and the steady-state formaldehyde emission
(optional) have been added;
h) Marking clause has been modified; and
j) All amendments to the previous version have been incorporated.

A scheme of labelling environment friendly products known as ECO-Mark has been instituted at the instance of
the Ministry of Environment, Forests and Climate Change, Government of India. The ECO-Mark is administered
by the Bureau of Indian Standards (BIS) under the Bureau of Indian Standards Act, 2016 as per the
Resolution No. 71 dated 21 February 1991 and Resolution No. 425 dated 20 October 1992 published in the Gazette
of the Government of India. For a product to be eligible for ECO-Mark, it shall also carry the Standard Mark
(ISI Mark) of BIS besides meeting additional environment friendly requirements. For this purpose, the
Standard Mark of BIS would be a single mark being a combination of the ISI Mark and the ECO-Mark.
Requirements to be satisfied for a product to qualify for the BIS Standard Mark for eco-friendliness, will be
optional. Manufacturing units will be free to opt for ISI Mark alone also.

The ECO criteria is based on the Gazette Notification No. 170 dated 16 May 1996 for wood substitutes as
environment friendly products published in the Gazette of Government of India, as revised/amended from time to
time.

This standard contributes to the United Nations Sustainable Development Goal 9 ‘Industry innovation and
infrastructure’ Build resilient infrastructure promote inclusive and sustainable industrialization and foster
innovation.

The composition of the Committee responsible for the formulation of the standard is given in Annex D.

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 : 2022 ‘Rules for rounding off numerical values (second revision)’. The number of significant places
retained in the rounded off value should be the same as that of the specified value in this standard.
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IS 303 : 2024

Indian Standard
PLYWOOD FOR GENERAL PURPOSES — SPECIFICATION
( Fourth Revision )

1 SCOPE defects. The type of plywood shall, therefore, be

designated by the kind of surfaces of the panels.
This standard covers the requirements of plywood The better quality surface shall be called ‘face
used for general purposes. (top)’, and the opposite side shall be called ‘back
(bottom)’. If the face (top) and the back (bottom)
2 REFERENCES are of the same quality, they are not distinguished.
The type of plywood shall denote first the quality
The standards listed in Annex A contain provisions of face (top) followed by the quality of back
which through reference in the text, constitute (bottom). For example, Type AA shall have both
provision of this standard. At the time of surfaces of quality A, Type AB shall have face
publication, the editions indicated were valid. All (top) of quality A and the back (bottom) of quality
standards are subject to revision, and parties to B and Type BB shall have both the surfaces of
agreements based on this standard are encouraged to quality B.
investigate the possibility of applying the most
recent edition of these standards. 5.2 The quality requirement of each of the surfaces
mentioned under 5.1, shall conform to the
3 TERMINOLOGY requirements given in Table 1. However, the
maximum number of categories of defects permitted
For purpose of this standard, the definitions given in on any one surface of the panel shall be restricted in
IS 707 shall apply. accordance with the requirements laid down in
Table 2.
4 GRADES AND CLASS
6 MATERIALS
4.1 Plywood for general purposes shall be of the
following three grades, depending upon the bond 6.1 Timber
strength developed by the adhesive used for bonding
the veneers: Any species of timber may be used for
manufacturer of plywood. It is recommended to
a) MR (moisture resistant) grade; use wood from sources other than natural forests
b) BWR (boiling water resistant) grade; and includes, Tree Outside Forest (TOF), rubber,
coconut, cashew, walnut, agro forestry, farm
c) BWP (boiling water proof) grade. forestry, industrial and social forestry plantations,
etc and shade trees from tea and coffee estates in
4.2 In terms of formaldehyde class, each grade of plywood manufacturing. A list of timber species
plywood shall be further classified in two classes as is given in Annex B for guidance purpose.
follows: Imported timber may also be used in
manufacturing of plywood.
a) Formaldehyde Class, 𝐸1
b) Formaldehyde Class, 𝐸2 6.2 Adhesive

4.3 These shall be manufactured in accordance Any suitable type of synthetic resin adhesive may
with 7.1 and 7.2. The grades shall conform to the be used for bonding the veneers in different grades
general and workmanship requirements given in of plywood comply with requirements as per the
8 and 9 respectively, and the test requirements laid respective grades (see 4.1) of plywood. For type of
down in 11. synthetic resin adhesive to use refer IS 848.

5 TYPES BASED ON CLASSIFICATION BY

6.2.1 Extenders may be used with synthetic resin
APPEARANCE
adhesive (aminoresins). However, when extender
5.1 Plywood for general purposes shall be used with synthetic resin adhesives (aminoresins)
classified into three types, namely, AA, AB and by more than 12 percent, shall contain suitable
BB based on the quality of the two surfaces, preservative chemicals in sufficient concentration to
namely, A and B in terms of general permissible satisfy the mycological test described in 11.3.2.

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Table 1 Quality Requirements of Surfaces of Plywood for General Purposes

(Clause 5.2)
Sl No. Defect Categories Type of Surfaces

A Type B Type
(1) (2) (3) (4)
i) Blister Nil Nil

ii) Checks Individual check not more than Individual check not more than
50 mm in length and the total length 100 mm in length and the total length
not more 300 mm per m2 area not more 1 000 mm per m2 area

iii) Discolouration Nil 5 percent

iv) Dote 5 cm per m2 15 cm per m2

v) Insect hole Scattered up to 12 holes per m2 Scattered up to 24 holes per m2

vi) Joints One joint for every multiple of No restriction

200 mm, provided no individual
piece is less than 100 mm in width

vii) Knots (dead) 2 up to 12 mm dia per m2 4 up to 20 mm dia per m2

viii) Pin knots (dead) 2 per m2 6 per m2

xi) Pin knots (live) No restriction No restriction

x) Knots (tight) 6 up to 25 mm dia per m2 No restriction

xi) Patches 4 patches per m2, provided they are Any number, provided they are all
all tight patches and do not mar the tight patches and do not mar the
appearance appearance

xii) Splits 2 splits, each not more than 1 mm 3 splits, each not more than 4 mm
wide and length not more 100 mm, wide and length not more 150 mm,
provided they are filled with provided they are filled with suitable
suitable filler veneer inserts. Splits up to 25 mm
long and 0.8 mm wide may be
ignored, provided they are suitably
filled with a filler

xiii) Swirl Unlimited, provided they do not No restriction

mar the appearance

Table 2 Permissible Categories of Defects

(Clause 5.2)

Sl No. Type of Surface Maximum Number of Categories of

Permissible Defects, per m2

(1) (2) (3)

i) A type 3
ii) B type 5

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7 MANUFACTURE b) 5 Ply — XXXXX or XYYYX or XYZYX.

7.1 The veneers for all the grades shall be either where
rotary cut or sliced. The veneers shall be sufficiently
smooth to permit an even spread of adhesive. X, Y, Z represents species used for top/bottom
Treatment as specified in 7.1.1 shall be given to the and centre.
plywood either at the veneer stage or after
converting the veneers into boards. 7.2.2 Joints in Veneers

Veneers that require to be joined to form a ply shall

7.1.1 Treatment be spliced (edge jointed) before assembly. All joints
shall be cut square. They may be taped on the face
7.1.1.1 Veneers from non-durable species and of the outer veneers in which case the tape shall be
sapwood of all species, when used for plywood removed at a later stage, and metal clips or staples,
manufacture shall be soaked in 1.25 percent solution if used, shall be removed. Perforated tapes may be
of boric acid or 1.9 percent solution of borax at a used on the glue side of the veneers. In assembly,
temperature of 85 °C to 90 °C for a period of joints in veneers running in the same direction shall
10 min to 40 min depending upon the thickness of be staggered. End joints and butt joints shall not be
the veneers, or the veneers may be dipped in permitted for any of the surfaces.
2 percent solution of boric acid or 3 percent borax
solution for 2 min and block stacked at least for 2 h. 7.2.3 Grain Direction
Alternatively, the veneers may be soaked at an
ambient temperature in a mixture of 0.5 percent Unless otherwise specified by the purchaser and
solution of sodium peotachlorophenate and except in boards comprising an even number of
1.5 percent of borax in water, for a period of 2 min plies, the direction of grain of the veneer in adjacent
and then stacked for at least half an hour before plies shall be at right angles to each other, and that
drying. of the outer plies shall run parallel to the longer side
of the board. In boards comprising even number of
7.1.1.2 For BWR and BWP Grade of plywood plies, the grain of the centre pair shall follow the
bonded with synthetic resin adhesive, the same direction. In adjacent plies, the grain should
preservative may be given conveniently after boards be at right angles to each other. However, a
come out of the press, while still hot or the treatment deviation not exceeding 10° may be permitted. In
given to the veneers before bonding. all cases, the grain on both faces of the assembly
boards shall run in the same direction.
7.1.1.3 For BWR and BWP Grade, fixed type of
preservative may be used subject to the agreement 7.2.4 Scarf Joints
between the manufacturer and the user according to
IS 5539. When sizes larger than the available press sizes are
required, scarf joints through the thickness of the
7.1.1.4 Any other type of preservative treatment board are permitted. All scarf joints shall be bonded
may also be given to plywood or veneer as per with the same or a better adhesive than the one used
agreement between the manufacturer and the for the manufacture of plywood, and shall be made
purchaser, or as declared by the manufacturer. with an inclination not greater than 1 in 12.
NOTE — In case of any other type of preservative 7.2.5 Permissible Defects
treatment, the same shall be declared by the manufacturer.

7.2 Assembly 7.2.5.1 Gaps in cores and cross-bands may be

permitted except for 3 ply plywood, provided the
7.2.1 Thickness width of the gap does not exceed 1 mm in case of
5 ply and 2 mm in case of plywood of more than
The thickness of all veneers shall be uniform within 5 ply and provided such gaps, if more than one,
a tolerance of ± 5 percent. Corresponding veneers shall be spaced not less than 80 mm away from
on either side of the central ply and those of face each other and are staggered not less than 50 mm
(top) and back (bottom) veneers shall be of species away as between ply, the next ply having the same
having similar physical and mechanical properties, grain direction.
such as, density, modulus of elasticity, shrinkage,
etc to ensure balanced construction. The examples 7.2.5.2 Splits in cores and cross-bands may be
of balanced construction for odd number of plies are permitted to an extent of 2 per core or cross-band.
as follows:
7.2.5.3 Overlap shall not be permitted.
a) 3 Ply — XXX or XYX; and

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8 DIMENSIONS AND TOLERANCES 9 WORKMANSHIP AND FINISH

8.1 Any dimensions (length and width) and number 9.1 The plywood shall be of uniform thickness
of ply as agreed to between the manufacturer and within the tolerance limits specified under 8.3.
the purchaser may be used and shall be declared
by the manufacturer. Prevailing dimensions 9.2 The faces of finished plywood shall be
(length × width) of plywood boards are as given reasonably smooth. Slight sanding may be given to
below: rough plywood boards in order to make them
reasonably smooth.
a) 2 440 mm × 1 220 mm;
b) 2 135 mm × 1 220 mm; 10 SAMPLING AND CRITERIA FOR
CONFORMITY
c) 2 135 mm × 915 mm;
d) 1 830 mm × 1 220 mm; and The method of drawing representative samples and
e) 1 830 mm × 915 mm the criteria for conformity shall be as prescribed in
IS 7638.
8.2 Thickness
11 PHYSICAL AND MECHANICAL
The thickness of the plywood boards shall be 3 mm, REQUIREMENTS
4 mm, 5 mm, 6 mm, 9 mm, 12 mm, 15 mm, 19 mm,
22 mm and 25 mm. 11.1 The plywood shall conform to the requirements
given in 11.3 to 11.6.
NOTE — Any other thickness as agreed to between the
manufacturer and the purchaser may also be used. 11.2 Unless otherwise specified in this standard, six
test specimens, cut from each of the plywood
8.3 Squareness and Edge Straightness selected as in 10 shall be subjected to tests
specified in 11.3 to 11.5. For formaldehyde
Edge straightness and squareness shall be tested content and steady-state formaldehyde emission
as per Annex C. test, specimens shall be taken as per IS 13745 and
IS/ISO 12460 (Part 1) respectively.
8.4 Tolerances
11.3 Glue Adhesion
The tolerances on the dimensions of finished
plywood boards shall be as given in Table 3. Glue adhesion shall be deemed satisfactory if the
Table 3 Tolerances on Dimensions of Plywood plywood complies with the requirements specified
in 11.3.1 and 11.3.2.
for General Purposes

(Clause 8.4) 11.3.1 Water Resistance Test

Sl Dimension Tolerance Plywood for general purposes of either grade

No. (see 4.1), when tested in the manner specified below
shall satisfy the minimum pass standard for test for
(1) (2) (3)
adhesion of plies as given in IS 1734 (Part 5).
i) Length + 6 mm
– 3 mm 11.3.1.1 Three test specimens of size
ii) Width + 3 mm 250 mm × 100 mm with full thickness of plywood
– 1 mm shall be prepared from each of the boards selected
under 10 and shall be tested for respective grade as
iii) Thickness described below.
a) less than 6 mm; ± 10 percent
and a) For MR Grade — Specimens shall be
b) 6 mm and ± 5 percent submerged in water at a temperature of
above 60 °C ± 2 °C for 3 h and dried for 8 h at a
temperature of 65 °C ± 2 °C. Such cycle of
iv) Squareness, Max 2 mm/1 000 mm
submergence and drying shall be followed
or 0.2 percent
by two more cycles. The specimens shall
v) Edge straightness, 2 mm/1 000 mm then be tested in accordance with the method
Max or 0.2 percent given in IS 1734 (Part 5).

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b) For BWR Grade — Specimens shall be 11.3.2 Mycological Test

submerged in boiling water for 8 h and
then dried for 16 h at a temperature of Plywood when tested in accordance with the method
65 °C ± 2 °C. Such cycle of submergence given in IS 1734 (Part 7) shall satisfy minimum pass
and drying shall be followed by two more standard for test for adhesion of plies as given in
cycles. The specimens shall then be tested IS 1734 (Part 5).
in accordance with the method given in
IS 1734 (Part 5). 11.4 Moisture Content

c) For BWP Grade — The specimens shall The plywood when tested in accordance with
be kept submerged in a pan of boiling water IS 1734 (Part 1) shall have a moisture content not
for a period of 72 h. The period of 72 h of less than 5 percent and not more than 15 percent.
boiling may be a continuous period or an
aggregate of smaller periods of boiling, if 11.5 Static Bending Strength
the test piece is left in cold water between
these smaller periods. These test pieces Three test specimens taken in each direction from
shall then be removed from the boiling the sample of plywood, when tested in accordance
water and cooled down to room with IS 1734 (Part 11) shall have an average and a
temperature by plunging them in cold minimum individual modulus of elasticity and
water. These test specimens, while still in modulus of rupture not less than the values
wet condition, shall be tested in accordance specified in Table 4 against each grade.
with the method given in IS 1734 (Part 5).
This test is applicable only for plywood of thickness
NOTE — The cycles of drying or soaking can be 6 mm and above.
made up of a number of shorter periods of drying or
soaking. In such instances the specimen shall be kept
in air at 27 °C ± 2 °C in between the shorter
periods constituting the drying cycle, and be kept
submerged in water at 27 °C ± 2 °C in between the
shorter periods constituting the soaking cycle.

Table 4 Average and Minimum Individual Values of Modulus of Elasticity (MOE) and Modulus of
Rupture (MOR)

(Clause 11.5)

Sl No. Grade MOE MOR

(N/mm2) (N/mm2)

Average Min Average Min

(1) (2) (3) (4) (5) (6)

i) MR Grade:
a) Along [direction parallel to the grain 3 400 3 100 26 23
direction of the face (top) veneer]; and

b) Across [direction perpendicular to the 2 300 2 100 17 15

grain direction of the face (top) veneer]

ii) BWR Grade and BWP Grade:

a) Along [direction parallel to the grain 4 300 3 800 34 31
direction of the face (top) veneer]; and

b) Across [direction perpendicular to the

2 900 2 500 23 21
grain direction of the face (top) veneer]

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11.6 Formaldehyde Content Test 12 ADDITIONAL REQUIREMENTS FOR

ECO-MARK
Test of free formaldehyde content in the sample
shall be done by perforator method as per IS 13745 12.1 General Requirement
and test results of drawn sample shall meet the
requirements of formaldehyde content as follows: 12.1.1 Plywood shall conform to the requirement
specified in this standard.
a) Formaldehyde < 8 mg/ 100 g of oven
Class, 𝐸1 dry sample; and
12.1.2 The manufacturer shall produce to Bureau of
b) Formaldehyde > 8 mg/100 g of oven Indian Standards, the environmental consent
Class, 𝐸2 dry sample and clearance from State Pollution Control Board as per
< 30 mg/100 g of oven the provisions of the Water (Prevention and
dry sample. Control of Pollution) Act, 1974 and Air (Prevention
and Control of Pollution) Act, 1981 and Water
11.7 Steady-State Formaldehyde Emission Test (Prevention and Control or Pollution) Cess Act,
(Optional Test) 1977 along with the authorization, if required under
the Environment (Protection) Act, 1986, while
Manufacturer will offer a stack of plywood made applying for ECO-Mark appropriate with enforced
under a batch (not less than 50 pieces) bearing the Rules and Regulations of Forest Department.
batch number and date of manufacture along with
details of plywood, that is, grade, size and thickness, 12.2 Specific Requirement
adhesive used and any other (the manufacture wish
Plywood shall conform to the specific requirements
to inform). After sampling, the sample shall
given for ECO-Mark under relevant clauses of this
immediately cover in airtight polythene with date of
sampling on the plywood. standard.

NOTE — The manufacturer shall provide documentary

Sample must be taken for test within 24 h of opening evidence by way of certificate or declaration to Bureau of
the airtight cover and within one month from the Indian Standards, while applying for ECO-Mark.
date of sampling, and test shall be done by the test
method as given in IS/ISO 12460 (Part 1). The test 13 MARKING
results of drawn sample shall meet the requirements
of formaldehyde emission value as follows: 13.1 Each plywood shall be legibly and indelibly
marked or stamped with the following:
a) Formaldehyde Class, 𝐸1 < 0.124 mg/m3;
and a) Manufacturer’s name and his initials or his
c) Formaldehyde Class, 𝐸2 > 0.124 mg/m . 3 recognized trade-mark, if any;
b) In words ‘PLYWOOD FOR GENERAL
11.8 Other Tests PURPOSE’;
c) The grade and type as follows:
For testing any other mechanical property of general
purpose plywood, subject to agreement between the 1) BWP/AA, BWP/AB, BWP/BB;
purchaser and the supplier, reference shall be made
to the provisions of IS 1734 (Part 1 to Part 20). 2) BWR/AA, BWR/AB, BWR/BB; and
3) MR/AA, MR/AB, MR/BB;
11.9 Retest
d) Formaldehyde Class;
If the samples selected as specified in 10 are found e) Nominal length, width and thickness of
not to be fully complying with the requirements plywood;
of 11.3 to 11.6, a further similar set of samples
shall be taken at random from the same batch and f) Month and year of manufacture;
subjected to the tests. If any of the samples in the g) Batch No.; and
second set is also found not to comply fully with the
requirements of test, all the plywood in the batch h) Criteria for which the plywood has been
represented by the samples shall be rejected. labelled as ECO-Mark (if applicable).

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13.2 Following additional information may be Bureau of Indian Standards Act, 2016 and the Rules
marked on each plywood: and Regulations framed there under, and the
products may be marked with the Standard Mark.
a) Number of plies; and
b) Trade name of timber species used in 14 DELIVERY
manufacturing of plywood (see IS 1150).
Unless otherwise specified, the plywood boards
13.3 BIS Certification Marking shall be delivered in a clean condition and shall be
suitably packed according to normal trade. For
The product(s) conforming to the requirements of ECO-Mark the material used for packaging of the
this standard may be certified as per the conformity plywood shall be recyclable, reusable or
assessment schemes under the provisions of the biodegradable.

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ANNEX A
(Clause 2)

LIST OF REFERRED STANDARDS

IS No. Title IS No. Title

IS 707 : 2011 Timber technology and (Part 12) : 1983 Determination of scarf joint
utilization of wood, bamboo strength (second revision)
and cane — Glossary of
terms (third revision) (Part 13) : 1983 Determination of panel
shear strength (second
IS 848 : 2006 Synthetic resin adhesives revision)
for plywood (phenolic
and aminoplastic) — (Part 14) : 1983 Determination of plate shear
Specification (second strength (second revision)
revision)
(Part 15) : 1983 Central loading of plate test
IS 1150 : 2000 Trade names and (second revision)
abbreviated symbols for
timber species (third (Part 16) : 1983 Vibration of plywood plate
revision) test (second revision)

IS 1734 Methods of test for (Part 17) : 1983 Long time loading test of
plywood: plywood strips (second
revision)
(Part 1) : 1983 Determination of density
and moisture content (Part 18) : 1983 Impact resistance test
(second revision) (second revision)
(Part 2) : 1983 Determination of resistance (Part 19) : 1983 Determination of nails and
to dry heat (second revision) screw holding power
(second revision)
(Part 3) : 1983 Determination of fire
resistance (second revision) (Part 20) : 1983 Acidity and alkalinity
(Part 4) : 1983 Determination of glue shear resistance test (second
strength (second revision) revision)

(Part 5) : 1983 Test for adhesion of plies IS 5539 : 1969 Specification for preservative
(second revision) treated plywood

(Part 6) : 1983 Determination of water IS 7638 : 1999 Wood/lignocellulosic based

resistance (second revision) panel products — Methods
of sampling (second
(Part 7) : 1983 Mycological test (second revision)
revision)
IS/ISO 12460-1 : Wood based panels —
(Part 8) : 1983 Determination of pH value
2007 Determination of
(second revision)
formaldehyde release:
(Part 9) : 1983 Determination of tensile Part 1 Formaldehyde
strength (second revision) emission by the 1-cubic-
metre chamber method
(Part 10) : 1983 Determination of
compressive strength IS 13745 : 2020 Method for determination of
(second revision) formaldehyde content in
wood-based panels by
(Part 11) : 1983 Determination of static extraction method called
bending strength (second perforator method (first
revision) revision)

To access Indian Standards click on the link below:

https://www.services.bis.gov.in/php/BIS_2.0/bisconnect/knowyourstandards/Indian_standards/isdetails/
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ANNEX B
(Clause 6.1)
LIST OF PREVALENT TREE OUTSIDE FOREST (TOF) SPECIES FOR PLYWOOD

Sl No. Botanical Name Trade Name Abbreviation

(1) (2) (3) (4)

i) Acrocarpus fraxinifolius Mundani MUN
ii) Ailanthus spp. Maharukh MAH
iii) Albizia chinensis Merr. Siris SIR
iv) Alstonia scholaris Chatian CHT
v) Anacardium occidentale Cashew CAH
vi) Bischofia javanica Uriam URI
vii) Chukrasia tabularis Chickrassy CHI
viii) Delonix spp. Gulmohur GUM
ix) Duabanga grandiflora Lampati LAP
x) Eucalyptus Eucalyptus EUC
xi) Grevillea robusta Silver oak SOA
xii) Hevea brasiliensis Rubber wood RUB
xiii) Khaya spp. Lambu LAB
xiv) Leucaena leucocephala Subabul SUB
xv) Macaranga spp. Vatta MCR
xvi) Maesopsi seminii Umbrella tree UMB
xvii) Melia azedarach Linn. Bakain PLI
xviii) Melia composita/dubia Malabar neem MNE
xix) Neolamarckea cadamba Kadam KAD
xx) Pinus spp. Pine PNE
xxi) Populus spp. Poplar POP
xxii) Samanea saman Saman SAM
xxiii) Toona ciliata Toon TOO
xxiv) Swietenia spp. Mahogony MAG

ANNEX C
(Clause 8.3)
METHOD OF TEST FOR SQUARENESS AND EDGE STRAIGHTNESS

C-1 PROCEDURE FOR EDGE STRAIGHTNESS shall be measured to the nearest millimetre and
recorded.
The straightness of the edges and ends of plywood
shall be verified against a straightedge not less than C-2 PROCEDURE FOR SQUARENESS
the full length of the plywood. If the edge on the
end of plywood is convex, it shall be held against The squareness of plywood shall be checked with a
the straightedge in such a way that also 1 200 mm × 1 200 mm square, by applying, one arm
gives approximately equal gap at each end. The of the square to the plywood. The maximum width
largest gap between the straightedge and the edge of the gap shall be recorded.

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IS 303 : 2024

ANNEX D
(Foreword)
COMMITTEE COMPOSITION
Wood and Other Lignocellulosic Products Sectional Committee, CED 20

Organization Representative(s)

Institute of Wood Science & Technology, Bengaluru DR M. P. SINGH (Chairperson)

Balaji Action Buildwell, New Delhi SHRI RAJESHWAR NAIR

SHRI VIVEK JAIN (Alternate)

Bamboo Society of India, Bengaluru SHRI PUNATI SRIDHAR

DR S. R. SHUKLA (Alternate I)
DR JAGADISH VENGALA (Alternate II)

Central Building Research Institute, Roorkee SHRIMATI HEMALATA

DR JEESHAN KHAN (Alternate I)
SHRI PRASANTA KAR (Alternate II)

Central Institute of Coir Technology, Bengaluru DR O. L. SHANMUGASUNDARAM

SHRIMATI SUMY SEBASTIAN (Alternate)

Central Public Works Department, New Delhi CHIEF ENGINEER (CSQ)

SUPERINTENDENT ENGINEER (TAS) (Alternate)

Century Plyboard India Ltd, Kolkata SHRI AJAY BALDAWA

SHRI JAGANNATH DAS (Alternate)

CSIR - Advance Materials and Processes Research DR ASOKAN PAPPU

Institute (AMPRI), Bhopal

Federation of Indian Plywood & Panel Industry, DR C. N. PANDEY

New Delhi SHRI JAYDEEP CHITLANGIA (Alternate)

Greenpanel Industries Limited, Tirupati SHRI SUBHASH KUMAR AGARWAL

DR PURSHOTTAM (Alternate)

Greenply Industries Ltd, Kolkata SHRI ARABINDA SAHA

Institute of Wood Science & Technology, Bengaluru SHRI ANAND NANDANWAR

MS SUJATHA D. (Alternate)

Mutha Industries, Agartala SHRI NEERAJ MUTHA

SHRI ANIL MUTHA (Alternate)

National Test House, Kolkata DR SOMIT NEOGI

SHRI S. PANERIA (Alternate)

The South Indian Plywood Manufacturers SHRI MOIZ VAGH

Association, Chennai

The Western India Plywood Limited, Kannur SHRI P. K. MAYAN MOHAMED

DR E. SREENIVASAN (Alternate)

Timpack Private Limited, Byrnihat SHRI INDER PAL SINGH BHUSRI

SHRI ANGAD SINGH BHUSRI (Alternate)

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IS 303 : 2024

Organization Representative(s)

Wood Technology Association, Yamuna Nagar SHRI S. C. JOLLY

BIS Directorate General SHRI ARUNKUMAR S., SCIENTIST ‘E’/DIRECTOR AND

HEAD (CIVIL ENGINEERING) [REPRESENTING
DIRECTOR GENERAL (EX-officio)]

Member Secretary
SHRI PRADEEP SINGH SHEKHAWAT
SCIENTIST ‘D’/JOINT DIRECTOR
(CIVIL ENGINEERING), BIS

Plywood, Veneers and Adhesives for Wood Products Subcommittee, CED 20:1

Organization Representative(s)

Institute of Wood Science and Technology, MS SUJATHA D. (Convener)

Bengaluru

Allied Resins and Chemicals Limited, Kolkata SHRI RAJESH MUNDRA

SHRI ASHIM KUMAR DAS (Alternate)

Central Public Works Department, New Delhi CHIEF ENGINEER (CSQ)

SUPERINTENDENT ENGINEER (TAS) (Alternate)

Defence R & D Organization, Kanpur DR D. N. TRIPATHY

Directorate of Standardisation, Ministry of SHRI V. K. CHHABRA

Defence, DTE of Standardization Government, SHRI S. K. SAXENA (Alternate)
New Delhi

Federation of Indian Plywood and Panel Industry, SHRI C. N. PANDEY

New Delhi SHRI JAYDEEP CHITLANGIA (Alternate)

Forest Research Institute (FRI), Dehradun DIRECTOR

Greenply Industries Limited, Kolkata SHRI ARABINDA SAHA

Hunsur Plywood Works Private Limited, Hunsur SHRI MOIZ VAGH

Institute of Wood Science and Technology, DR NARSIMHAMURTHY

Bengaluru

Kanara Wood & Plywoods Industries Limited, SHRI P. H. G. REDDY

Mangaluru SHRI Y. MOHAMMED FARHAAD (Alternate)

National Test House, Kolkata SHRI SOMIT NEOGI

SHRI S. PANERIA (Alternate)

Nuchem Limited, New Delhi SHRI SUDEV BARAR

SHRI ARUSH BARAR (Alternate)

Sarda Plywood Industries Limited, Kolkata SHRI SUNDEEP CHITLANGIA

SHRI S. L. YADAV (Alternate)

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IS 303 : 2024

Organization Representative(s)

The South Indian Plywood Manufacturers SHRI MOIZ VAGH

Association, Mysuru

The Western India Plywood Limited, Kannur SHRI P. K. MAYAN MOHAMED

DR E. SREENIVASAN (Alternate)

In Personal Capacity (S-9, Sangath Alarcity Flats, DR R. N. KUMAR

M.G.R. Nagar, Second Main Road, Velachery,
Chennai)

In Personal Capacity (House No. 12, HIG, 1st Stage, SHRI S. S. ZOOLAGUD
K.H.B. Colony, Basaveswara Nagar,
Bangaluru)

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Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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