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List of DMS for Public Comment Oct 2014

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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)         Maximum clear span 16 m;

b)         Maximum recommended truss spacing of:-

            i)  1220 mm, for concrete tiles

            ii) 1830 mm, for metal sheet roofs;

c)         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.

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