DRAFT MALAYSIAN STANDARD Malaysia… · This Malaysian Standard cancels and replaces MS 1401:1996,...

DRAFT

MALAYSIAN MTIB15TC1042R1

STANDARD

STAGE: PUBLIC COMMENT (40.20)

DATE: 25/5/2017 - 23/7/2017

Dressed timber, door jambs and general

mouldings - Specification

ICS: 91.060.50 Descriptors:Dressed timber, door jambs, general mouldings, specification

© Copyright 2017

DEPARTMENT OF STANDARDS MALAYSIA

MTIB15TC1042R1

© STANDARDS MALAYSIA 2017 - All rights reserved i

Contents Page Committee representation………………………………………………………………………… ii

Foreword…………………………………………………………………………………………… iii

Introduction………………………………………………………………………………………… iv

1. Scope…………………………………………………………………………................ 1

2. Normative references………………………………………………………….............. 1

3. Terms and definitions…………………………………………………………………… 1

4. Dimensional characteristic……………………………………………………………… 3

5. Timber…………………………………………………………………………………….. 3

6. Moisture content…………………………………………………………………………. 4

7. Quality control……………………………………………………………………………. 4

8. Grading requirements………………………………………………………………….... 4

9. Storage……………………………………………………………………………………. 5

Annex A Grading requirements for dressed timber, door jambs and general mouldings… 6

MTIB15TC1042R1

© STANDARDS MALAYSIA 2017 - All rights reserved ii

Committee representation

The Industry Standards Committee on Timber, Timber Products and Timber Structures, under whose authority this Malaysian Standard was developed, comprises representatives from the following organisations: Construction Industry Development Board Malaysia Department of Standards Malaysia Forest Research Institute Malaysia Institution of Engineers, Malaysia Jabatan Kerajaan Tempatan Jabatan Kerja Raya Malaysia Malaysian Furniture Promotion Council Malaysian Panel-Products Manufacturers’ Association Malaysian Timber Council Malaysian Timber Industry Board (Secretariat) Malaysian Wood Industries Association Malaysian Wood Moulding & Joinery Council Malaysian Wood Preserving Association Sabah Timber Industries Association Sarawak Timber Association Sarawak Timber Industry Development Corporation Timber Exporters’ Association of Malaysia Universiti Putra Malaysia

The Technical Committee on Timber which supervised the development of this Malaysian Standard consists of

representatives from the following organisations:

Association of Malaysian Bumiputera Timber and Furniture Entrepreneurs

Construction Industry Development Board Malaysia

Forestry Department Peninsular Malaysia

Forest Research Institute Malaysia

Golden Pharos Berhad

Jabatan Kerja Raya Malaysia

Malayan Adhesives and Chemical SdnBhd

Malaysian Timber Council

Malaysian Timber Certification Council

Malaysian Wood Industries Association

Malaysian Timber Industry Board (Secretariat)

Malaysian Wood Moulding and Joinery Council

Malaysian Wood Preserving Association

Sarawak Timber Association

Sabah Timber Industries Association

Sarawak Timber Industry Development Corporation

Timber Exporter’s Association of Malaysia

Universiti Putra Malaysia

UniversitiTeknologi MARA

The Working Group on Dressed Timber, Door Jambs and General Mouldings which developed this Malaysian Standard

consists of representatives from the following organisations:


Malaysian Timber Industry Board (Secretariat)

Malaysian Wood Moulding and Joinery Council



MTIB15TC1042R1

© STANDARDS MALAYSIA 2017 - All rights reserved iii

Foreword

This Malaysian Standard was developed by the Working Group on Dressed Timber, Door

Jambs and General Mouldings under the authority of the Industry Standards Committee on

Timber, Timber Products and Timber Structures

Major modifications in this revision are as follows:

a. incorporation of new scope on “plantation timbers”;

b. incorporation of new clauses on “normative references”, “terms and definition”,

“dimensional characteristic”, “timber”, “moisture content”, “quality control” and

“storage”;

c. removal of definitions; and

d. incorporation of an annex on “grading for dressed timber, door jambs and general

mouldings”.

This Malaysian Standard cancels and replaces MS 1401:1996, Specification for dressed timber,

door jambs and general mouldings.

Compliance with a Malaysian Standard does not of itself confer immunity from legal obligation.

MTIB15TC1042R1

© STANDARDS MALAYSIA 2017 - All rights reserved iv

Introduction

The regions of tropical hardwoods growth bridge countries and continents. The purpose of

grades is to maintain a standard between mills manufacturing the same or similar species

regardless of the character of the logs from which they are produced.

The timber products which quality levels are specifically addressed in these grading rules

include dressed timber, door jambs and general mouldings. Quality levels based upon intended

use was the basis of establishing grading requirements. This permits sawn timber or timber

products of a given grade to be used for the same purpose, regardless of the mill of origin.

Uniform grades also provide the buyers and sellers of timber products with a measure by which

they can be confident and/or understands the grade(s) under consideration.

MTIB15TC1042R1

1 © STANDARDS MALAYSIA 2017 - All rights reserved

Dressed timber, door jambs and general mouldings - Specification

1 Scope

This Malaysian Standard describes the grading requirements applicable to dressed timber, door

jambs and general mouldings of premium, standard and utility grade manufactured from tropical

hardwoods and plantation timbers.

2 Normative references

The following normative references are indispensable for the application of this standard. For

dated references, only the edition cited applies. For undated references, the latest edition of

the normative references (including any amendments) applies.

MS 229:2009, Nomenclature and common uses of Malaysian Timbers

MS 360, Treatment of timber with copper/chrome/arsenic wood preservative - Specification

(Third revision)

MS 471-1:2001Glossary of terms relating to timber and wood-based panel products - Part 1:

Characteristics and properties of timber (First revision)

MS 837, Solid timber - Determination of moisture content (First revision)

ISO 9001, Certification for quality management systems

Tropical Hardwood Machined Lumber Products Grading Rules, September 1987

3 Terms and definitions

For the purposes of this standard, the following terms and definitions given in MS 471-1 and

the followings apply.

3.1 decay

Incudes wet rot and dry rot; it is the disintegration of wood resulting from the action of wood-

destroying fungi. It is usually accompanied by discolouration even in the early stages of attack.

NOTE. Infection by sap-stain fungi is not classed as decay.

MTIB15TC1042R1

© STANDARDS MALAYSIA 2017 - All rights reserved 2

3.2 door jambs

The vertical member of the door frame in which a door is secured. Pre-assembled timber

structure, surrounding and supporting a door whether installed prior to the erection of the wall

or subsequently fixed to fit a given wall opening. It comprises two jambs, a header and

sometimes a transom and/or a threshold, either machined from solid stock or with a planted

doorstop.

3.3 dressed timber

Sawn timber planed on one or more surfaces; also known as wrought timber; D4S – dressed

four sides, i.e. on two faces and two edges; D3S – dressed three sides, i.e. on two faces and

one edge; D2S – dressed two sides, i.e. on two faces only; D1S – dressed one side, i.e. on one

face only

3.4 general mouldings

These include sawn timber which have been dressed to S4S and shaped to a profile that is no

longer square or rectangular in shape. General mouldings regardless of shape or profiles are

commonly manufactured to random length as well as to sets or fixed length. Cut-to-length shall

be graded as entirely usable.

3.5 plantation timbers

Timber obtained from forest-or timber plantations or planted timber.

3.6 premium grade

This grade is ordered when the ultimate in fine appearance is desired. It is the highest grade

produced and many of the pieces are absolutely clear and free of natural and machining

defects. The grade will allow for a few minor characteristics that do not detract from their

appearance and high quality. It is intended where a clear non-stain finish may be required.

3.7 standard grade

This grade is ordered when less demanding applications than premium grade is acceptable. It

will include pieces that are repaired by plugging, filling, or sanding, or include natural or

machining characteristics that are acceptable for a fine appearance. This grade is intended for

use where the products may be colour stained in finish than provided for in premium grade.

3.8 surfaced four sides (S4S)

These include timbers dressed or machine by the use of a planer or moulder to give a smooth

surface on four sides.

3.9 tropical hardwoods

All sawn hardwood timbers that grown in Malaysia and in regions with a similar climate.

MTIB15TC1042R1


3.10 utility grade

This grade has many of the same characteristics present in standard grade but generally is less

restrictive in natural and machining characteristics. The product however must be able to

perform for the intended use. The grade is intended for lower end applications with an

acceptable product quality. Filling and sanding of characteristics is permitted to provide a quality

suitable for opaque paint finishes.

4 Dimensional characteristic

Dimensional characteristics of dressed timber, door jambs and general mouldings shall be in

accordance with those defines in the product standard, to which the product belongs.

All dimensions given shall be at reference moisture content in accordance with Clause 6.

Unless there is evidence to the contrary, it shall be assumed that the thickness and width of a

piece of timber increases or decreases by 0.25 % for every 1 % of moisture content above or

below the reference.

5 Timber

5.1 Species

A list of the most commonly used, but not limited to, species for dressed timber, door jambs

and general mouldings is described in Table 1, MS 229:2009.

5.2 Grade

The timber shall be free from decay and insect attack on better face except as listed in

Tables A1, A2 and A3.

Colour variation in timber shall be permitted.

5.3 Treatment

Preservative treatment of tropical hardwood shall be carried out in accordance MS 360. For

plantation timbers, other treatment method may be applied provided that methods of treatment

and chemical used are recorded.

Preservative treatment shall be carried out prior to delivery of dressed timber, door jambs and

general mouldings to the site. Any treated products that undergo subsequent cutting, shall be

applied with preservative and then allowed to dry.

MTIB15TC1042R1


5.4 Defect - drying and machining defects

Drying and machining defects as defined in MS 471-1:2001 shall be permitted according to

Annex A in this standard.

6 Moisture content

Dressed timber, door jambs and general mouldings shall be protected to minimize the dimensional changes due to the fluctuation of equilibrium moisture content or physical damage which can reduce their durability or structural strength prior to installation.

The moisture content shall be of 12 % ± 2 % at the time of delivery of the products to building

site. The methods of determining the moisture content shall be in accordance with MS 837.

During installation, care shall be taken on the building site to ensure that dressed timber, door

jambs and general mouldings are supplied in dry condition is adequately protected from

weather.

7 Quality control

7.1 General

The manufacturer shall establish document and maintain a factory production control system

to ensure that the products placed on the market conform to the stated performance

characteristics. The factory production control system shall consist of procedures, regular

inspections and test and/or assessments; the results shall be used to control raw and other

incoming materials or components, equipment, the production process and the product, and

shall be sufficiently detailed to ensure that conformity of the product is apparent.

If the manufacturer operates a factory production control system conforming to the

requirements of ISO 9001, and made specific to the requirements of this standard, the above

requirements are considered to be satisfied.

7.2 Record of documentation

The results of inspections, tests or assessments requiring action shall be recorded, as shall any

action taken. The action to be taken when control values or criteria have not been met shall be

recorded. Records shall be kept for at least two years, but shall also fulfill the regulatory system

and/or the legal requirements of the country concerned.

8 Grading requirements

Dressed timber, door jambs and general mouldings shall be graded to premium, standard and

utility grade in accordance with Annex A.

MTIB15TC1042R1


For the products made from plantation timbers, the grading requirements defined in Tables A1,

A2 and A3 are not applicable and shall be made to their respective grading rules.

9 Storage

Dressed timber, door jambs and general mouldings shall be delivered to the site under proper

protection and stored under closed environment and dry conditions. During storage, the

products shall be properly stacked accordingly.

MTIB15TC1042R1


Annex A

(normative)

Grading for dressed timber, door jambs and general mouldings

A1 Grading for dressed timber, door jambs and general mouldings is carried out in accordance with Tropical Hardwood Machined Lumber Products Grading

Rules.

A2 Table A1 provides grading requirements for dressed timber.

Table A1 Grading fordressed timber

Natural characteristic Grade

Premium Standard Utility

Allowable natural characteristics on better face

1 Warp

1.1 Bow1 Not exceeding 38 mm in every 2 130 mm

length. Bow for other lengths in direct

proportion to this requirement.

As in premium grade. As in premium grade.

1.2 Crook (spring) Not exceeding 13 mm in 2 130 mm length

for set length and for random length

allowed within reasonable limit.

Not exceeding 19 mm in 2 130 mm length



Not exceeding 25 mm in 2 130 mm

length for set length and for random

length allowed within reasonable limit.

MTIB15TC1042R1


1.3 Cup a) 0.75 mm in widths less than 150 mm.

b) 1.5 mm in widths greater than 150 mm

but less than 250mm.

c) 3 mm in widths greater than 250 mm.

As in premium grade. a) 1.5 mm in widths less than 150

mm.

b) 3 mm in widths greater than 150

mm but less than 250 mm.

c) 6 mm in widths greater than

250 mm.

1.4 Twist Not exceed 4mm deviation from plane in

every 50 mm width in 3 000 mm length.

Twist for other lengths in direct proportion

to this requirement.

As in premium grade. Not exceed 8mm deviation from plane

in every 50 mm width in 3 000 mm

length. Twist for other lengths in direct


2 Borer holes

2.1 Pin holes Based on a piece 50 mm wide, the

maximum number of pin holes in the piece

shall not exceed the number of 1 800 mm

multiples in each piece, i.e., one pin hole

per every 1 800 mm in length, or one pin

hole per 925 cm of surface area. This is

subject to the overall allowance that only

one pin hole is allowed to occur in any

650 mm2 of surface area. Horizontal pin

holes are not allowed.

Based on a piece 50 mm wide, the

maximum number of pin holes in the

piece shall not exceed the number of

300 mm multiples in each piece, i.e., one

pin hole per every 300 mm in length, or

six pin hole per 925 cm of surface area.

This is subject to the overall allowance

that only one pin hole is allowed to occur

in any 650 mm2 of surface area. However

up to 5 % of the total number of pieces in

any parcel can include lightly scattered

pin holes without clusters, i.e., not more

than 3 pin hole per 650 mm2 of surface

area. Horizontal pin holes shall be

repaired.

Scattered pin holes are allowed

provided they are neither so

numerous nor so grouped as to

materially affect the appearance of

the piece.

MTIB15TC1042R1


2.2 Shot holes Not allowed Limit shall be on the basis of width and

for every 1 220 mm length supplied. Shot

holes shall be unstained, scattered and

repaired.

maximum number

Width @ 1 220 mm

25 mm & below 1 hole

26 mm - 75 mm 2 holes


153 mm - 300 mm 6 holes

The limits on pieces measuring 2 130 mm

and below but forming part of the random

length parcel supplied, shall be

determined on proportionate basis.

Scattered shot holes, whether stained

or unstained, allowed if plugged or

filled and smooth sanded.

2.3 Grub or

large borer holes

Not allowed Not allowed Not allowed

4 Resin pockets Based on a piece 50 mm by 2 130 mm

(approximately 925 cm2 of surface are),

maximum one very small resin pockets not

exceeding 3 mm wide and 50 mm long in

each piece. This is subject their occurrence

does not exceed 5 % of the parcel or unit

of delivery.

Based on a piece 50 mm by 2 130 mm


maximum two very small resin pockets

not exceeding 3 mm wide and 50mm long

in each piece well filled and sanded. This

is subject their occurrence does not

exceed 5 % of the parcel or unit of

delivery.


(approximately 925 cm2 of surface

are), maximum two medium resin

pockets not exceeding 3 mm wide and

200 mm long in each piece well filled

and sanded. This is subject their

occurrence does not exceed 10 %

of the parcel or unit of delivery.

5 Knots

MTIB15TC1042R1


5.1 Sound knots Maximum 2 smooth machined knots, or

their equivalent smaller, the sum of their

diameters not exceeding 1/8 the width to

every length of 2 130 mm supplied.

Maximum 2 smooth machined knots, or




Checked knots to be filled and sanded.

Maximum 2 smooth machined knots,

or their equivalent smaller, the sum of

their diameters not exceeding 1/3 the

width to every length of 2 130 mm

supplied. Checked knots to be filled

and sanded.

5.2 Unsound knots Not allowed Not allowed Maximum 2 smooth machined knots,





and sanded.

6 Compression

failure2 Not allowed Maximum one compression failure to

every 900 mm of length and subject that

no one compression failure shall be

allowed to exceed 1/3 the width of the

piece supplied.

Maximum two compression failure to

every 900 mm of length and subject

that no one compression failure shall

be allowed to exceed 1/3 the width of

the piece supplied.

7 Brittle heart Not allowed Not allowed Allowed in any amount, provided it

does not impair strength.

8 Checks Based on a piece 50 mm by 2 130 mm

(approximately 925 cm2 of surface area),

one check is allowed if it does not extend

to the opposite face and subject to size

limit of 0.75 mm in width and 150 mm in

length and their occurrence does not

exceed 5 % of the parcel or unit of delivery.








delivery.



area), one check is allowed if it does

not extend to the opposite face and

subject to size limit of 1.5 mm in

width and 300 mm in length and their

occurrence does not exceed 10 % of

the parcel or unit of delivery.

MTIB15TC1042R1


9 Splits Allowed if the length of the split does not

exceed the width of the piece, and their

occurrence does not exceed 5 % of the

parcel or unit of delivery. Splits are not

allowed in cut-to-length items.

Allowed if the length of the split does not





Allowed if the length of the split does

not exceed twice the width of the

piece, and their occurrence does not


delivery. Splits cannot exceed 1/6 the

length of the piece. Splits are not


10 Sapwood Bright sapwood allowed without limitation.

Medium stained sapwood limited to 1/6 the

surface of the face, and provided their


pieces. Heavy stained sapwood is not

allowed.

Medium stained sapwood allowed

without limitation.

Bright sapwood or stained sapwood

not restricted.

Allowable machine defects on face

11 Skips Allowed on face and either of the two

edges provided they are light enough to

allow sanding to remove traces of skip

marks. Skip shall however be limited in

size to :

On face : 0.75 mm deep and 150 mm

long.

On edge : 0.75 mm deep and 300 mm long

and their occurrence shall not

exceed 10 % of the parcel or

unit of delivery.

Allowed on face and either of the two




size to :


long.

On edge : 0.75 mm deep and 600 mm

long and their occurrence

shall not exceed 10 % of the

parcel or unit of delivery.


edges provided they are light enough

to allow sanding to remove traces of

skip marks. Skip shall however be

limited in size to :


long.



shall not exceed 10 % of

the parcel or unit of

delivery.

MTIB15TC1042R1


12 Chipped grain Allowed if occurrence does not exceed

10 % of the surface of the piece in 10 % of


Allowed if occurrence does not exceed

20 % of the surface of the piece.

No restrictions.

13 Torn grain Allowed if not exceeding 0.75mm deep and

not impairing the appearance of at least

85 % of the exposed surface. Their

occurrence shall not exceed 5 % of the


Allowed if not exceeding 0.75 mm deep

and not impairing the appearance of at

least 85 % of the exposed surface. Their




and not impairing the appearance of

at least 85 % of the exposed surface.

Their occurrence shall not exceed

10 % of the parcel or unit of delivery.

14 Raised grain Allowed if 1mm deep, not to exceed 5 % of

the pieces.

Allowed if 1mm deep, not to exceed

10 % of the pieces.

Allowed if 1.5 mm deep.

15 Chip marks Allowed if not exceeding 0.4 mm deep and

subject to their occurrence does not



and subject to their occurrence does not


delivery.

Allowed if not exceeding 0.75 mm

deep.

16 Burn marks In 3 700 mm and longer pieces one per

piece is allowed, but burn marks may not

occur in more than 3 % of the parcel or unit

of delivery. Burn marks are not allowed in

lengths shorter than 3 700 mm.

In 3 700 mm and longer pieces one per


occur in more than 5 % of the parcel or

unit of delivery. Burn marks are not

allowed in lengths shorter than

3 700 mm.

Allowed, provided non-indented.

17 Cutter marks Even and smooth to touch and not less

than 10 cutter marks per 25 mm.


1) Bow is not applicable to this standard. 2) Compression failure is not applicable to this standard.

MTIB15TC1042R1


A3 Table A2 provides grading requirements for door jambs.

Table A2 Grading for door jambs




1 Warp


length.


1.2 Crook (spring) Not exceeding 3 mm in 2 130 mm length. As in premium grade. As in premium grade.

1.3 Cup Not exceeding 0.75 mm in 125 mm width

or less, or not exceeding 1.5 mm in widths

greater than 125 mm.


1.4 Twist Not exceed 4 mm deviation from plane in





2 Borer holes

MTIB15TC1042R1


2.1 Pin holes Base on a 125 mm nominal wide jamb, the

maximum number of pin holes in the jamb

shall not exceed three times the number of

2 130 mm multiples in each jamb, i.e.,

three pin hole per every 2 130 mm in

length, or approximately one pin hole per

925 cm of surface area. This is subject to

the overall allowance that only one pin hole

is allowed to occur in any 650 mm2 of

surface area. Horizontal pin holes are not

allowed.

Base on a 125 mm nominal wide jamb,

the maximum number of pin holes in the

piece shall not exceed three times the

number of running 300 mm multiples in

each jamb, i.e., three pin hole per every

300 mm in length. This is subject to the

overall allowance that only two pin hole is

allowed to occur in any 650 mm2 of

surface area.

However up to 5 % of the total number of

pieces in any parcel can include lightly

scattered pin holes without clusters, i.e.,

not more than 3 pin holes per 650 mm2 of

surface area Horizontal pin holes are not

allowed.


provided they are neither so

numerous nor so grouped as to

materially affect the appearance of

the piece.




repaired and not occur in more than 20 %

of the pieces.

maximum number

Width @ 1,220 mm




153 mm - 300 mm 6 holes


and below shall be determined on

proportionate basis.




MTIB15TC1042R1


2.3 Grub or

large borer holes


4 Resin pockets Not allowed Based on a jamb 50 mm by 2 130 mm



not exceeding 3 mm wide and 50 mm

long in each piece well filled and sanded.

This is subject their occurrence does not


delivery.

Based on a jamb 50 mm by 2 130 mm








5 Knots















and sanded.





supplied. The unsound proportion

must be removed and then filled and

smooth sanded.

6 Compression





piece supplied.


every 900 mm of length and subject



the piece supplied.

MTIB15TC1042R1




8 Checks Based on jamb 50 mm by 2 130 mm











limit of 0.75 mm in width and 150 mm

in length and their occurrence does not


delivery.





subject to size limit of 1.5 mm in

width and 300 mm in length and their



9 Splits Not allowed Not allowed Not allowed






allowed.


without limitation.


not restricted.





marks. After sanding there should be on

area over 0.75 mm scant. Skip shall

however be limited in size to :


long.




marks. After sanding there should be on

area over 0.75 mm scant. Skip shall

however be limited in size to :


long.




skip marks. After sanding there

should be no area over 0.75 mm

scant. Skip shall however be limited in

size to :


long.

MTIB15TC1042R1




exceed 5 % of the parcel or unit

of delivery.

On edge : 0.75 mm deep and 300mm








delivery.

12 Chipped grain Allowed if occurrence does not exceed 10

% of the surface of the piece in 10 % of the




No restrictions.

13 Torn grain Allowed if not exceeding 0.75 mm deep












at least 90 % of the exposed

surface. Their occurrence shall not


delivery.

14 Raised grain Allowed if sufficiently light to allow removal

by casual sanding.

Allowed if sufficiently light to allow

removal by casual sanding.

Allowed if 1.5 mm deep.







delivery.


and subject to their occurrence does

not exceed 5 % of the parcel or unit of

delivery.

16 Burn marks Not allowed One per piece and not exceeding 3% of







MTIB15TC1042R1


A4 Table A3 provides grading requirements for general mouldings.

Table A3 Grading for general mouldings




1 Warp


length. Bow for other lengths in direct



1.2 Crook (spring) Not exceeding 19 mm in 2 130 mm length




1.3 Cup Not exceeding 1.5 mm in every 150 mm

width (nominal.


1.4 Twist Not exceed 4mm deviation from plane in




As in premium grade. Not exceed 8 mm deviation from plane

in every 50 mm width in 3 000 mm

length. Twist for other lengths in direct


2 Borer holes

2.1 Pin holes Base on a piece 50 mm wide, the

maximum number of pin holes in the piece

shall not exceed the number of 1 800

mm multiples in each mouldings, i.e., one

Base on a piece 50 mm wide, the

maximum number of pin holes in the

piece shall not exceed the number of 300

mm multiples in each mouldings, i.e., one


provided they are neither so numerous

nor so grouped as to materially affect

the appearance of the piece.

MTIB15TC1042R1


pin hole per every 1 800 mm in length, or

one pin hole per 925 cmof surface area.

This is subject to the overall allowance that

only one pin hole is allowed to occur in any

650 mm2 of surface area. Horizontal pin

holes are not allowed.

pin hole per every 300 mm in length, or

six pin hole per 925 cmof surface area.

This is subject to the overall allowance

that only one pin hole is allowed to occur

in any 650 mm2 of surface area. However

up to 5 % of the total number of pieces in

any parcel can include lightly scattered

pin holes without clusters, i.e., not more

than 3 pin hole per 650 mm2 of surface

area. Horizontal pin holes shall be

repaired.




repaired and not occur in more than 20 %

of the pieces.

maximum number

Width @ 1,220 mm




153 mm - 300 mm 6 holes


and below but forming part of the random

length parcel supplied, shall be

determined on proportionate basis.




MTIB15TC1042R1


2.3 Grub or

large borer holes


4 Resin pockets Not allowed Based on a piece 50 mm by 2 130 mm



not exceeding 3 mm wide and 50 mm

long in each piece well filled and sanded.

This is subject their occurrence does not


delivery.









5 Knots















and sanded.






and sanded.

6 Compression





piece supplied.


every 900mm of length and subject



the piece supplied.

MTIB15TC1042R1




8 Checks Based on a piece 50 mm by 2 130 mm














delivery.





subject to size limit of 1.5 mm in width

and 300 mm in length and their



9 Splits Allowed if the length of the split does not





Allowed if the length of the split does not





Allowed if the length of the split does

not exceed twice the width of the

piece, and their occurrence does not


delivery. Splits cannot exceed 1/6 the

length of the piece. Splits are not







allowed.


without limitation.


not restricted.











skip marks. After sanding there

MTIB15TC1042R1



size to :


long.



exceed 5 % of the parcel or unit

of delivery.


size to :


long.





should be no area over 1.5mm scant.

Skip shall however be limited in size

to :


long.





delivery.

12 Chipped grain Allowed if occurrence does not exceed 10

% of the surface of the piece in 10 % of the




No restrictions.

13 Torn grain Allowed if not exceeding 0.75 mm deep












at least 90 % of the exposed surface.

Their occurrence shall not exceed 10

% of the parcel or unit of delivery.

14 Raised grain Allowed if sufficiently light to allow removal

by casual sanding.

Allowed if sufficiently light to allow

removal by casual sanding.

Allowed if 1.5mm deep.







delivery.

Allowed if not exceeding 0.75 mm

deep and subject to their occurrence

does not exceed 5 % of the parcel or

unit of delivery.

16 Burn marks In 3 700 mm and longer pieces one per


occur in more than 3 % of the parcel or unit

In 3 700 mm and longer pieces one per


occur in more than 5 % of the parcel or


MTIB15TC1042R1


of delivery. Burn marks are not allowed in

lengths shorter than 3 700 mm.

unit of delivery. Burn marks are not

allowed in lengths shorter than

3 700 mm.





MTIB15TC1042R1


Bibliography

[1] Malaysian Grading Rules for Sawn Hardwood Timber 2009 Edition, Malaysian Timber

Industry Board

[2] Malaysian Grading Rules for Rubberwood, Malaysia

MTIB15TC1042R1

© STANDARDS MALAYSIA 2017 - All rights reserved

Acknowledgements

Members of Technical Committee on Timber

Assoc Prof Dr MohdAriff Jamaluddin (Chairman) UniversitiTeknologi MARA

Ms Nor Shahira Mat Nasir (Secretary) Malaysian Timber Industry Board

(MTIB)

Mejar (B) Ajlan Mohamad/

Mr Mansor Abas

Association of Malaysian

Bumiputera Timber and Furniture

Entrepreneurs

Mr Mohamad Razi Ahmad Construction Industry Development

Board Malaysia

Mr Mohd Rahim Rani/

Mr Ahmad Jalil Jaafar

Forestry Department Peninsular

Malaysia

Dr Gan Kee Seng/

Dr Mohamad Omar Mohamad Khaidzir


Mr Mohd Adawi Ton Omar/

Mr Hilmi Awang

Golden Pharos Berhad

Ir Muhammad Azman Jamrus /

Ir Nor Azman Ismail

Jabatan Kerja Raya Malaysia

Ms Rafizah Manshor@Mansor Malayan Adhesives and Chemical

SdnBhd

Mr Rajan Samikannoo/

Ms Sabrina Haji Mawasi

Malaysian Timber Certification

Council

Ms Lau Li Har/ Ms Ong Lay Lee Malaysian Timber Council

Dato’ Chung King Tong/

Ms Pang Suet Kum

Malaysian Wood Industries

Association

Mr Leong Yue Peng/ Mr Kuppusamy Malaysian Wood Moulding and

Joinery Council

Mr Low Kong Wah/ Ms Young Kam Han Malaysian Wood Preserving

Association

Dr Kho Chin Seng/ Ms Annie Ting Sarawak Timber Association

Mr Stephen Chaw Zie Shing Sabah Timber Industries

Association

Mr Nicholas Andrew Lissem/

Mr Awang Mentali Awang Sulaiman

Sarawak Timber Industry

Development Corporation

Mr Wong Kar Wai/

Mr Khoo Chin Leong

Timber Exporter’s Association of

Malaysia

Prof Dr Paridah Md Tahir/

Assoc Prof Dr H’ng Paik San


Assoc Prof Dr Wan Mohd Nazri Wan Abdul Rahman/

Assoc Prof Dr Nor Yuziah Mohd Yunus


MTIB15TC1042R1

© STANDARDS MALAYSIA 2017 - All rights reserved

Members of Working Group on Dressed Timber, Door Jambs and General Mouldings

Assoc Prof Dr H’ng Paik San (Chairman) Universiti Putra Malaysia

Ms Nor Shahira Mat Nasir /

Mr Muhamad Basri Md Daud (Secretary)

Malaysian Timber Industry Board

Dr Sik Hui Shing Forest Research Institure Malaysia

Ms Mahsuri Mat Dris/

Mr Jambari bin Surif/

Mr Mohider bin Mat Saleh

Malaysian Timber Industry Board

Dr Clarence Tan Chiat Lin Malaysian Wood Moulding and

Joinery Council

Dr Adlin Sabrina Muhammad Roseley Universiti Putra Malaysia

Assoc Prof Dr Rohana binti Hassan UniversitiTeknologi MARA

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