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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER: PART 3 : PERMISSIBLE STRESS DESIGN OF GLUED LAMINATED TIMBER
MS 544: PART 3:2001
Status : Original
Format : PDF

Glued laminated timber (glulam) should be manufactured in accordance with MS 758 : 2001
and Clause 4. All timber used for laminated members should be strength graded in
accordance with BS ....Read more 5756 or equivalent Malaysian Standard.
NOTES:
1. The stresses given in this part of MS 544 apply only to timber graded in accordance with BS 5756 with respect to
structural tropical hardwoods. Because this standard is primarily for solid structural timber, manufacturers of glued
laminated timber may need to specify overriding requirements for wane, fissures and distortion. In deriving the
recommended stress for timber, estimates of 5 % lower exclusion values of the strength and stiffness were used.
Furthermore, the modulus of elasticity values no longer included element due to shear.
2. Grade and species for glulam that satisfy the requirement for strength classes are given in Table 1. Glulam
strength properties may be determined from the strength class properties given in Table 2.
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER : PART 6 : WORKMANSHIP, INSPECTION AND MAINTENANCE (FIRST REVISION)
MS 544 : PART 6 :2001 (CONFIRMED:2020)
Status : 1st Revision
Format : PDF

This part gives recommendations for the preparation, fabrication, inspection, storage,
handling and maintenance of materials and components.
The recommendations given in this part are nece ....Read more ssary conditions for applicability of the
permissible stresses and loads given elsewhere in MS 544.
Materials should be applied, used and fixed in such a way as to perform adequately the
functions for which they are designed.
Workmanship in fabrication, preparation and installation of materials should conform in all
respects to accepted good practice.
There should be adequate supervision throughout the preparation and construction of the
structure to ensure that it conforms to the principles and practical considerations of the
design.
Members which are damaged, crushed or split beyond the limits permitted for similar defects
in the grading should be rejected or repaired to the satisfaction of the designers and
approving authority. For wood particleboard, cement bonded particleboard and high density
fibreboard, in addition to the recommendations given in this part, all the recommendations of
BS 5669 should be followed.
The clauses in this part apply to all assemblies other than those of glued laminated members
which are dealt with in MS 758, BS 4169 and MS 544 : Part 3.
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER : PART 4 : TIMBER PANEL PRODUCTS : SECTION 4 : ORIENTED STRAND BOARD (OSB)
MS 544: PART 4: SECTION 4:2001 (CONFIRMED:2020)
Status : Original
Format : PDF

This Section gives recommendations for the use of Oriented Strand Board (OSB) in
construction. The panels in conformance to this Section are intended for use as floor and wall
sheathings i ....Read more n light framing construction. However, uses are not limited to these applications.
Other possible uses may include temporary formworks for concrete and furniture frames.
The strength values listed in Tables 5, 6 and 7 in this Section relate to product strength
properties but they are not design values to be used directly in engineering calculations
without proper reduction factors. These reduction factors take into account the variability of
strength of manufactured panels and also load duration. Since the production of OSB in this
country is still new, the reduction factor that relates to the manufacturing variation cannot be
determined. However, laboratory scale experiment had been conducted to make the
derivation of the allowable spans for OSB panels possible. Therefore, for the purpose of floor
design, the allowable span values given herein should be used
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER : PART 11 : RECOMMENDED SPAN TABLES AND THEIR CALCULATIONS : SECTION 3 : CEILING BINDERS
MS 544 : PART 11 :SECTION 3 : 2001 (CONFIRMED:2020)
Status : Original
Format : PDF

This Section of MS 544 : Part 11 recommends a calculation basis for the permissible clear
span of ceiling binders used in traditional pitched roof construction, i.e. not including trussed
....Read more roofs. The method of calculation is for single span ceiling binders formed from solid timber
and supported at each end by external or internal walls. The space above the ceiling binders
is assumed to be accessible, thus both uniform loads and a single concentrated load are
considered. A typical example of roof construction is given in Figure 1.
This Section of MS 544 : Part 11 is applicable to the species, strength groups and grades of
timber given in MS 544 : Part 2
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER : PART 2 : PERMISSIBLE STRESS DESIGN OF SOLID TIMBER (FIRST REVISION)
MS 544: PART 2: 2001
Status : 1st Revision
Format : PDF

This Part gives recommendations for the structural use of the Malaysian hardwood and
softwood timber species in load bearing members. It includes recommendations on quality,
grade stresses ....Read more and modification factors applicable to these timber when used as simple
members, or as parts of built-up components, or as parts of structures incorporating other
materials. It does not, and it is not intended to deal comprehensively with all aspects of timber
construction. In particular it does not cover well tried and traditional methods of timber
construction which have been employed successfully over a long period of time.
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER: PART 12: LAMINATED VENEER LUMBER FOR STRUCTURAL APPLICATION
MS 544: PART 12:2006 (CONFIRMED:2020)
Status : Original
Format : PDF

This Malaysian Standard applies to Laminated Veneer Lumber (LVL) products engineered for use
in structural applications in which the primary loading is in either the edgewise or endwise directio ....Read more n
[(Figures 1a) and 1b)] such as rafters, headers, beams, joists, studs and columns. Secondary
gluing shall be permitted for edgewise bending application. Use of scaffold planks or secondary
end-jointing is beyond the scope of this standard.

Structural Laminated Veneer Lumber (SLVL) to be used in this standard shall be manufactured in
accordance with MS 544 and shall meet all requirements of the standard.
Structural Laminated Veneer Lumber is a product intended for use in dry service condition, Service
class I or II, where the moisture content is not more than 20 %.
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER: PART 10: PRESERVATIVE TREATMENT OF STRUCTURAL TIMBER
MS 544 : PART 10 : 2003
Status : Original
Format : PDF

This Malaysian Standard gives recommendations for preservative treatment of timbers to be
used for structural purposes in Malaysia to protect them from degradation by wood-destroying
organ ....Read more isms. It does not cover the remedial treatment of existing timber in old buildings. It does
not deal with the protection of timber against fire, nor with preserving the appearance of
timber against weathering or staining.
NOTE. All wood preservatives used in Malaysia have to be registered with Pesticides Board Malaysia under the
Pesticides Act 1974
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER : PART 5 : TIMBER JOINTS
MS 544 : PART 5 : 2001
Status : Original
Format : PDF

This part applies to joints in solid timber fabricated with mechanical fasteners described by
Malaysian Standard. These include joints fabricated with the following mechanical fasteners:
a ....Read more ) nails;
b) wood screws;
c) bolts;
d) coach screws;
e) split-ring connectors; and
f) shear-plate connectors.
NOTES:
1. Design rules for specialised and patented mechanical fasteners and for variants of conventional fasteners are not
included in this code.
2. This Standard doe.s not specifically cover glued timber-to-timber or timber-to-plywood connections as occurred in
fabricated components such as stressed skin panels or plywood webbed beams. In such cases, joint design can be
based on the timber components in the connection, provided that the joint is fabricated using a rigid, durable
adhesive. Phenolic type adhesives meet these requirements. The design of fabricated components comprising glued
connections is therefore based on the fact that with correct bonding practice and quality control, a joint is developed
in which the adhesive bond strength and durability will be superior to the components comprising the joint. Reference
may be made to AS 1720.1: 1988, Appendix D2 for information on methods for assessing the deformation of joints.
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER : PART 4 : TIMBER PANEL PRODUCTS : SECTION 2 : MARINE PLYWOOD
MS 544 : PART 4 : SECTION 2 : 2001
Status : Original
Format : PDF

This section gives recommendations for the use of sanded and unsanded Marine Plywood, in
balanced construction, manufactured in accordance with The Standard Product Manual for
the Producti ....Read more on of Malaysian Basic Structural Grade (MBSG) Rated Plywood, Timber
Technology Bulletin, No: 1, August 1995 by Forest Research Institute Malaysia, (FRIM) with
special restriction on the species that are allowed to be used in the lay-up. These plywoods
are designated as MBSG-Marine.
This section applies only to plywoods that are to be used in severe wetting conditions (open
deck, jetty, etc) in buildings or civil construction works but not meant for shipbuilding, where
direct and prolong contact with sea and fresh water is involved. This section is suitable for
parts of marine craft such as decking, cabins and other similar parts.
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CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER : PART 11 : RECOMMENDED SPAN TABLES AND THEIR CALCULATIONS : SECTION 2 : CEILING JOISTS
MS 544 : PART 11 : SECTION 2 : 2001 (CONFIRMED:2020)
Status : Original
Format : PDF

This Section of MS 544 : Part 11 recommends a calculation basis for permissible clear span
for ceiling joists with access at a maximum spacing of 610 mm centre-to-centre. It does not
cater ....Read more for the design of the ties of trussed rafters, whether prefabricated or otherwise.
The uniform and concentrated loads recommended in Uniform Building By-Law (UBBL) :
1984 are considered.
This Section of MS 544 : Part 11 is applicable to the species, strength groups and grades of
timber given in MS 544 : Part 2 for both single and continuous span ceiling joists as shown in
Figure 1.
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