Download List of DMS for Public Comment October 2014

DRAFT MALAYSIAN STANDARDS FOR PUBLIC COMMENT
01/10/2014 – 30/11/2014
ISC: TIMBER, TIMBER PRODUCTS AND TIMBER STRUCTURES
TC on Timber Structures
1. MTIB14TC2001R0
Code of practice for structural use of timber, part 8: Design,
fabrication and installation of prefabricated timber roof trusses using toothed metal plate
connectors
This standard specifies the requirements for the design, fabrication and installation of
prefabricated timber roof trusses using toothed metal plate connectors. It is applicable to the
design, fabrication and installation of prefabricated timber roof trusses within the following general
limitations:
a)
b)
c)
Maximum clear span 16 m;
Maximum recommended truss spacing of:i) 1220 mm, for concrete tiles
ii) 1830 mm, for metal sheet roofs;
Maximum design wind speed of 35.2 m/s.
This Standard does not preclude the use of materials or methods of design, fabrication and
installation other than those specified in this Standard, provided it can be shown that these satisfy
the performance requirements met by the materials and methods described herein.
2. MTIB14TC2002R0
Code of practice for structural use of timber, Part 11:
Recommendations for the calculations basis for span tables, Section 4: Domestic rafters
This section of MS 544 part 11 recommends a calculation basis for the permissible clear span for
roof rafter with a slope from 15° to 45°. The recommendations apply to rafters at a maximum
spacing of 1 200 mm centre-to-centre. The method of calculation makes no allowance for any
contribution of other parts of the roof to the load resistance of the rafters although it is assumed
that the tiling battens are capable of providing lateral load distribution and lateral support.
It does not cover the design of rafters taking account of a structural contribution by sheet material
supporting the roofing where such action can be provided by adequate design of its attachments
as in a stressed skin panel roof.