4.7 Performance Criteria for Load Bearing Ability
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.45(65) - Test Procedures for Fire-Resisting Divisions of High Speed Craft - (adopted on 11 May 1995) - Annex - Test Procedures for Fire-Resisting Divisions of High Speed Craft - 4 Other Load Bearing Fire-Resisting Divisions - 4.7 Performance Criteria for Load Bearing Ability

4.7 Performance Criteria for Load Bearing Ability

 The test specimen should be deemed to have failed if it is no longer able to support the test load. Support of the test load is determined by both the amount and the rate of deflection. Since relatively rapid deflections can occur until stable conditions are reached, the rate of deflection criteria of decks is not applied until a deflection of L/30 has been exceeded. For the purposes of this resolution, the following criteria apply:

  • .1 Bulkheads

  • .1.1 limiting axial contraction of h/100 m; and

  • .1.2 limiting rate of axial contraction of 3 h/1000 mm/min

    where:
    h = the initial height (mm), and

  • .2 Decks

  • .2.1 Limiting deflecting of L2/400 d mm; and

  • .2.2 Limiting rate of deflecting of L2/9000 d mm/min,

    where:
    L = the clear span of the specimen (mm)
    d = the distance from the extreme fibre of the design tension tone of the structural section (mm).
Parent topic: 4 Other Load Bearing Fire-Resisting Divisions
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