-
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a
practical regime of right to information for citizens to secure
access to information under the control of public authorities, in
order to promote transparency and accountability in the working of
every public authority, and whereas the attached publication of the
Bureau of Indian Standards is of particular interest to the public,
particularly disadvantaged communities and those engaged in the
pursuit of education and knowledge, the attached public safety
standard is made available to promote the timely dissemination of
this information in an accurate manner to the public.
इंटरनेट मानक
“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru
“Step Out From the Old to the New”
“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti
Sangathan
“The Right to Information, The Right to Live”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता
है”Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
“Invent a New India Using Knowledge”
है”ह”ह
IS 2179 (1979): converted timber for lorry bodies [CED 9:Timber
and Timber Stores]
-
IS : 2179 - 1979
Indian Standard SPECIFICATION FOR
CONVERTED TIMBER FOR LORRY BODIES
( First Revision )
Timber Sectional Committee, BDC 9
Chairman
Sam B.P. SRIVASTAVA
Members
SHRI S. S. ABHYANXAR
Representing
Ministry of Agriculture and Irrigation
Engineer-in-Chief’s Branch, Army Headquarters SHRI S. K. GUPTA (
~Iltcrnate )
Railway Board ( Ministry of Railways ) . . ADDITIONAL DIRECTOR (
TIMBER ) JOINT DIRECTOR ( WORKS ) ( &tcrnate )
CHIEF CONSERVATOR OF FORESTS, Agriculture, Forests and
Cooperation Department, VADODARA Government of Gujarat,
Ahmadabad
ADDITIONAL CHIEF CONSER- VATOR OF FORESTS ( Alternate )
CHIEB CONSERVATOR OB FIJRESTS Forest Department, Government of
Himachal Pradesh, Simla
CONSERVATOR OB FORESTS ( Alternate ) SHRI G. C. DAS National
Test House, Calcutta DEPUTY INSPECTOR GENERAL OB Ministry of
Agriculture and Irrigation
FORESTS DIRECTOR, FOREST RESEARCH AND Forest Department,
Government of Karnataka,
UTILIZATION Bangalore GAP'7 v.f'. GARB Naval Headquarters
SERI R. S. CHAUDHARY ( Alternate ) DK JOSEPH GEORGE Indian
Plywood Industries’ Research Institute,
Bangalore SARI V. SIVANANDA ( Alternate )
SHRI D. P. JOSHI Forest Department, Government of Uttar
Pradesh,
SHRI K. S. LAULY Lucknow
Federation of Indian Plywood and Panel Industry, New Delhi
EXECUTIVE DIRECTOR ( Alternate ) SHRI P. V. MEHTA Directorate
General of Technical Development,
New Delhi LT-COL S. A. MOHILE Ministry of Defence ( R & D
)
SHRIU.B.KANCEAN (Alternate)
( Continued on page 2 1
Q Copyright 1979 INDIAN STANDARDS INSTITUTION
This publication is protected under the Indian Copyright Act (
XIV of 1957 ) and reproduction in whole or in part by any means
except with written permission of the publisher shall be deemed to
be an infringement of copyright under the said Act.
i
-
IS : 2179 - 1979
( Continued from page 1 )
PBESIDENT DR S. K. PURKAYA~THA
SHRI B. M. PRASAD ( Alternate ) Forest Research Institute and
Colleges, Dehra Dun Forest Research Institute and Col!eges (
Wood
Anatomy Branch ), Dehra Dun Indian Plywood Manufacturing Co Ltd,
Bombay DR A. PURUSHOTHAM
DE V. RANQANATHAN In pert&al capacity ( C-198 D&once
Colony, Now Delhi )
DR R. S. RATRA SERI S. N. SANYAL
SHRI A.C. SEKHAR
SHRI SEARAN SIN~H
National Buildings Organization, New Delhi Forest Research
Institute and Colleges ( Timber
Mechanics Branch ), Dehra Dun In personal capacity ( Srrkalpnm,
Lawsonr Bay,
Pedawaltair P. O., Visakhapatnam 530017 ) Directorate General of
Supplies and Disposals,
New Delhi SHRI F. C. SHARMA
SHRI D. V. VERXA SHBI J. K. SINEA ( Altcrnotr )
SHRI D. AJIT~A SIMHA, Director ( Civ Engg )
Directorate General of Civil Aviation ( Ministry of Tourism and
Civil Aviation ), New Delhi
Ministry of Defence ( DGI )
Director General, IS1 ( Ex-oficio Member )
Members
DR A. N. NAYER SHRI J. N. PANDEY
Representing
In personal capacity ( C-59 Indorpuri, .New Delhi ) Bihar State
Forests Development Corporatton Ltd,
Patna
SARI J. R. MEHTA Deputy Director ( Civ Engg ), IS1
Timber Conversion and Grading Subcommittee, BDC 9 : 10
Convcncr
SHRI A. C. SEKHAB ‘ Srikalpam ‘, Lawsons Bay,
Pedawaltair P.O., Vishakhapatnam 530017
Members
ADDITIONAL DIRECTOR ( TIMBER ) Railway Board ( Ministry of
Railways ) JOINT DIRECTOR ( WORKS ) ( Alturnate )
CHIEB CONSERVATOR OF FORESTS Forest Department, Government of
Himachal Pradesh, Simla
CONSERVATOR OF FORESTS ( Altcrnqte ) CF~I~~I~~~~~E~VATOR OB
FOBE~TS, Agriculture, Forests and Cooperation Department,
Government of Gqarat, Ahmadabad ADDITIONAL CHIEF CONSER- VATOR
OF FORESTS ( Alternate )
( Continued on puge 12 )
2
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IS : 2179 - 1979
Indian Standard SPECIFICATION FOR
CONVERTED TIMBER FOR LORRY BODIES
( First . Revision 1
0. FOREWORD
0.1 This Indian Standard ( First Revision ) was adopted by the
Indian Standards Institution on 31 January 1979, after the draft
finalized by the Timber Sectional Committee had been approved by
the Civil Engineering Division Council.
0.2 Timber is invariably used for lorry body manufacture and
since all the species are not considered suitable for different
components/parts, this standard has been prepared to cover the
species considered suitable for different parts, namely,
body/sides, floor, front and tail board, etc. Also, the standard
specifies the requirements of such timber in converted form.
0.2.1 This standard was first published in 1962 and this is the
first revision. In this revision, provisions relating to seasoning
of converted timber have been introduced. Provisions relating to
measurements and permissible defects have been modified. Also,
moisture content limitations in conformity with the permissible
moisture content limits in different zones have been
prescribed.
0.3 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
0.4 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 : Z-1960*. The number of
significant places retained in the rounded off value should be the
same as that of the specified value in this standard.
*Rules for rounding off numerical values ( revised ).
3
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IS:2179-1979
1. SCOPE
1.1 This standard covers the specification for converted timber
in the form of planks and scantlings for lorry bodies and includes
a list of species of timber suitable for manufacturing the same (
see Appendix A).
2. TERMINOLOGY
2.1 For the purpose of this standard, the definitions given in
IS : 707-1976* shall apply.
3. SPECIES OF TIMBER
3.1 A list of species of timber suitable for different
components of lorry bodies are given in Appendix A.
4. REQUIREMENT
4.1 The timber shall, be free from centre-heart ( pith), any
kind of decay ( rot), shakes, spike or slay knots, spiral or
twisted grain, twist, live insect attack and any other defect
except the permissible defects ( see 7 ).
4.2 All pieces shall have fairly straight and parallel sides and
square trimmed at the ends.
5. MOISTURE CONTENT
5.1 The timber shall be properly seasoned by any of the methods
described in IS : 1141-19737.
5.2 Unless otherwise specified, the moisture content of planks
and scantlings at the time of initial supply shall be 10 to 16
percent within a depth of 20 mm from the surface for timber 50 mm
and above in thickness and 8 to 14 percent for timber less than 50
mm in thickness for different zones as specified in IS :
287-1973:.
5.3 During rainy season or in humid areas like Assam, Malabar,
etc, a tolerance of + 3 percent in moisture content shall be
permissible.
6. DIMENSIONS, TOLERANCES AND MEASUREMENTS
6.1 Dimensions - The dimensions of planks and scantlings shall
be as ordered.
*Glossary of terms applicable to timber technology and
utilization ( second rteision ). tCode of practice for srasoning of
timber ( first reuision ). fRecommendations for maximum permissible
moisture content for timber used for
different purposes ( srcond revision ) .
4
-
IS:2179- 1979
6.2 Tolerances-The tolerances on width and thickness on the
unplaned cut sixes shall be as follows:
a) Width ( irrespective of the width of the piece ) f3 mm - I.5
mm
b) Thickness:
1) For pieces up to 5 cm in thickness
2) For pieces over 5 cm in thickness
(+: mm mm
J+3 mm I-1 mm
6.2.1 The minus tolerance on width and thickness as specified in
6.2 shall not be permitted in more than 25 percent of the total
number of pieces accepted at any one time.
6.2.2 When pieces of definite width, say, 150 mm wide are
demanded, a plus or minus tolerance as permitted in 6.2 shall be
permitted.
6.2.3 When pieces of definite width range, say, 150 to 250 mm,
are demanded the minus tolerance on the minimum width, say, 150 mm
and plus tolerance on the maximum width, say 250 mm, shall not be
permitted.
6.3 Measurements -The measurements of length, width and
thickness and the computation of the volume shall be made as
follows:
a) The length shall be measured in metres in midline of a piece.
The fractions of a metre shall be rounded off to the nearest lower
0’05 of m.
b) The width shall be measured at the narrowest place in
centimetres or millimetres and shall be rounded off to the nearest
centimetres.
c) The thickness shall be measured at the narrowest place in
centimetres or millimetres and shall be rounded off to the nearest
centimetres.
d) The volume shall be computed in cubic metres correct to three
places of decimal on the basis of accepted sizes.
7. PERMISSIBLE DEFECTS
7.1 Plugging or covering of visible defects shall not be
permissible in any form.
7.2 Permissible defects shall be considered collectively and not
singly.
7.3 Defects to the extent specified in 7.3.1 to 7.3.8 shall be
permissible.
5
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ISr2179-1979
7.3.1 Distortion - or Waq!hg
7.3.1.1 Bow - shall be permissible up to a maximum of 0’5 cm/m
length of the piece.
7.3.1.2 Cup - shall be permissible up to a maximum of 0.5 cm/ 30
cm width of the piece.
7.3.1.3 Spring - shall be permissible up to a maximum of 0’3
cm/m length of the piece.
7.3.2 End Splits - The longest end-split at each end of the
piece shall be measured and the lengths added together. The total
length of these shall not exceed 3 cm/m length of the piece.
7.3.3 Knots
7.3.3.1 Planks
a) Live knots - Live knots measuring up to 10 mm diameter shall
be permissible provided they are not so numerous or located/grouped
as to affect unduly the strength and usefulness of timber. Live
knots measuring over 10 mm and up to 35 mm in diameter shall be
permissible to the extent of two knots per metre length of the
piece provided that:
1) no knot is nearer than 10 mm from any edge;
2) the distance between any two knots is not less than 30
cm;
3) the section of the knot in the direction of the width is not
more than one-eighth of the width of the piece in case of planks up
to 10 cm in width; and
4) the section of the knot in the direction of the width is not
more than one-fourth of the width of the piece in case of planks
over 10 cm in width.
b) Dead knots- Dead knots measuring up to 6 mm diameter shall be
permissible provided they are not so numerous or located/grouped as
to affect unduly the strength and usefulness of timber. Dead knots
measuring over 6 mm and up to 25 mm in diameter shall be
permissible to the extent of one knot per metre length of the piece
provided that:
1) no knot is nearer than 10 mm from any edge; and
2) the section of the knot in the direction of the width is not
more than one-fourth of the width of the piece.
6
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IS t 2179 - 1979
7.3.3.2 Scantlings
a>
b)
Live knots - Live knots measuring up to 10 mm in diameter shall
be permissible provided they are not so numerous or located/
grouped as to affect unduly the strength and usefulness of timber.
Live knots measuring over 10 mm and up to 35 mm diameter shall be
permitted provided that:
1) the distance between any two knots is not less than 30 cm;
and 2) the maximum number of such knots ( live and dead
combined ) is not more than 2 per metre length of the piece, [
see 7.3.3.2 (b) (2) 1.
Dead knots - Dead knots measuring up to 6 mm diameter shall be
permissible provided they are not so numerous or located/grouped as
to affect unduly the strength and usefulness of timber. Dead knots
measuring 6 mm and up to 25 mm in diameter shall be permitted
provided that:
1) the distance between any two knots is not less than 30 cm;
and
2) the maximum number of such knots ( live and dead combined )
is not more than 2 per metre length of the piece [ see 7.3.3.2 (a)
(2) I.
7.3.4 Pin-Holes ( Dead Infestation ) - shall be permissible
provided they are scattered and not concentrated or located as to
affect unduly the strength and usefulness of timber.
7.3.4.1 Pin-holes made by powder post beetles shall not be
permissible.
7.3.4.2 Pin-holes ( dead infestation ) shall not be present in
more than 10 percent of the total number of pieces accepted at any
one time.
7.3.5 Sap-Stain ( Blue-Stain ) - shall be permissible.
7.3.6 Sapwood - shall be permissible to the extent of 124
percent of the cross-sectional area of any piece over 35 cm4 in
cross-sectional area.
7.3.6.1 Unlimited sapwood shall be permissible provided the
timber has been pressure treated with an approved preservative
according to 5.5 of Is : 401-1967*.
7.3.7 SIo&e of Grain ( Cross Grain ) - shall be permissible
maximum deviation of 1 in 12.
up to a
*Code of practice for preservation of timber ( second rrvision
).
7
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IS : 2179 - 1979
7.3.8 Surface Cracks - shall be permissible on any surface (
excluding the ends ) as follows:
Thickness of the Piece Depth of the Deekest Crack 1 cm mm
Upto 1.5
Over 5 and up to 10 3
Over 10 6
8. PRESERVATIVE TREATMENT
8.1 All timbers containing sapwood and those marked with
asterisk in Appendix A shall be given prophylactic treatment as
specified in Group 7 of Table 2 of IS : 401-1967*.
9. END COATING
9.1 The ends of each accepted piece of timber shall be
end-coated up to a distance of at least 2’5 cm more than the length
of the longest endsplit with any of the following compositions:
a> b) cl 4 e> f)
Thick coal tar or bituminous paint/solution;
Rosin and lamp black ( 10 : 1 ), melted, mixed and applied
hot;
Hardened gloss oil for end-coating;
Paraffin wax;
Molasses and lime ( 3 : 1 ); and
Anti-splitting-cum-preservative compound of the following
composition:
H.S.P., bitumen MexR 115/15 L.S.P, bitumen MexR IO/20 Creosote
fuel oil ( 50 : 50 ) Soap stone Cinder ( boiler ash )
37.5 1 12.5 1 5.00 ) parts by weight
30.00 1 15.00 _J
---- 100~00
----
g) Tar acid-pitch ( 1 : 1 )
h) Bitumen paint - pitch ( 4 : 3 )
*Code of practice for preservation of timber ( second reoisim
).
8
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IS:2179 -1979
10. MARKING
10.1 Each piece of timber shall be legibly and indelibly marked
on one of the broad faces at a distance of about 30 cm from the end
with the following information:
a) Abbreviated symbol for the name of the species as given in
Appendix A;
b) Size ( dimensions in which accepted );
c) Supplier’s name or initials or recognized trade-mark, if any;
and
d) Year of supply.
10.1.1 The piece of timber may also be marked with the IS1
Certification Mark.
NOTE - The use of the HI Certification Mark is governed by the
provisions of the Indian Standards Institution ( Certification
Marks ) Act and the Rules and Regulations made thereunder. The ISI
Mark on products covered by an Indian 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 ISI and operated by the producer. IS1 marked products
are also continuously checked by IS1 for conformity to that
standard as a further safeguard. Details of conditions under which
a licence for the use of the IS1 Certification Mark may be granted
to manufacturers or processors, may be obtained from the Indian
Standards Institution.
9
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ISr2179-1979
APPENDIX A ( CZaws 1.1, 3.1, 8.1 and 10.1 )
SPECIES OF TIMBER FOR LORRY BODY MANUFACTURING
A-l. SPECIES OF TIMBER FOR CROSS-BEARERS AND LONGITUDINAL
RUNNERS
A-l.1 The following species of timber shall be used for
cross-bearers and longitudinal ru&ers of lorry bodies:
SL TRADENAYB BOTANICALNAME NO.
1. *Aini Artocarjus hirsutus
2. Bijasal Ptcrocarpus mar&urn
3. Deodar Cedrus dcodara
4. Hathipaila Ptcrosficrmum acerifolium
5. Kala-siris Albizia odoratissima
6. Kokko Albizia lebbeck
7. Mundani Acrocarpus fraxinifolius
8. *Padri Stereospermum spp.
9. Safed-siris Albizia procera
10. Sissoo Dalbergia sissoo
11. Teak Tectona grandis
12. Thingan Hopea odorata
ABBREVIATED
SYMBOL
AIN
BIJ DE0
HAT
KS1
KOK
MUN
PAD
SSI
SIS
TEA
THI
A-2. SPECIES OF TIMBER FOR BODY SIDES, FLOOR, FRONT AND
TAILBOARD
A-2.1 In addition to the species of timber specified for
cross-bearers and longitudinal runners ( A-l.1 ) the following
timbers shall be permitted for body sides, floors, front and
tailboards:
I%. TRADENAME BOTANICAL NAME ABBREVIATED
SYMBOL
1. Amari Amoora spp. AMA
2. Benteak Lagerstroemia lanceolata BEN
3. Bonsum Phoebe spp. BON
4. Chaplash Artocarpus Chaplasha CHP
*Subject to prophylactic treatment as given in 8.1.
10
-
SL No.
5.
TRADE NAME
*Chickrassy
6. Dhaman
7. Gurjan
8. Hollock
9. Hollong
10. Kail
11. Kathal
12. Kindal
13. Laurel
14. Lendi
15. Piney
16. Poon
17. Sal
18. White bombwe
19. White chuglam
IS t 2179 - 1979
BOTANICAL NAME ABBREVIATED SYMBOL
Chukrasia vclutina CHI ( Syn. C. tabularis )
Grcwia tiliaefolia DHA
Dipterocatpus spp. GUR
Terminalia myriocarpa HOL
Dipterocarpus macrocarpus HON
Pinus wallichiana KAL
Artocarpus hetcrophyllus KAT ( Syn A. integriflius )
Terminalia paniculata KIN
Terminalia alata LAU ( Syn. TT. coriacea ) ( Syn. T. crenulata
)
Lagerstroemia parvifora LEN
Kingiodendron pinnatum PIN ( Syn. Hardwickia pinnata )
Calophyllum spp. PO0
Shorea robusta SAL
Terminalia procera WBO
Terminalia bialata WCH ( Sapwood )
*Subject to prophylactic treatment as given in 8.1.
11
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IS : 2179 - 1979
( Continued from page 2 )
Membns
CHIEF CO~SEERVATOE OF FORESTS
SERI B. R. Grr~ra
SEBI D. P. JOSHI
SHBI N. LAXMINAEAYAN
Forest Department, Government of West Rengal, Calcutta
Forest Department, Government of Jammu and Kashmir, Jammu
Tawi
Forest Department, Government of Uttar Pradesh, Lucknow
Andhra Pradesh Timber Merchants Federation, Hyderabad
SHRI V. SUDB~R~HAN ( Aftsrnak ) SHEI P. V. MEEITA Directorate
General of Technical Development,
New Delhi OFFICER-IHCHAROE Forest Research Institute and
Colleges (Timber
Logging Branch ). Dehra Dun PRESIDENT Himachal Pradesh Forests
Lessees Association, Simla SBRI S. S. RAJPUT Forest Research
Institute and Colleges ( Timber
Mechanics Branch ), Dehra Dun SHRI B. S. RAWAT Forest Research
Institute and Colleges ( Wood
Working, Saw Milling and Finishing Branch ), Dchra Dun
SHRI F. C. SHARXA Directorate General of Civil Aviation (
Ministry of Tourism and Civil Aviation ), New Delhi
SHRI J, K. SINHA Ministry of Defcnce ( DGI ) SHRI GULAM ALAM (
Altcmatc )
SHRI R. T. SOMAIYA Bombay Timber Merchants Association, Bombay
SHRI JIMMY WADIA ( Alternate )
SEBI T. C. Srra Forest Department, Government of Madhya Pradesh,
Bhopal
SHRI S. K. AWASTHY ( A~t6rnatc) .
12
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a: ( Reaffirmed 2005 )