Clt mtb seminar_presentation_seven

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Clt mtb seminar_presentation_seven

  1. 1. Fire ResistanceConsiderations
  2. 2. Maximum storey height for timberdts complying buildingsAustraliaNumber of storeys without sprinklersStorey Max floorarea (m2)Single family Unlimited UnlimitedMulti Residential 3 UnlimitedOffice 2 8,000Retail 2 5,000Industrial 2 18,000Public (Assembly) 1 8,000Number of storeys without sprinklersSingle family Unlimited UnlimitedMulti Residential 3 UnlimitedOffice 2 UnlimitedRetail 2 5,000Industrial 2 18,000Public (Assembly) 1 Unlimited
  3. 3. Rise instoreyType of ConstructionClass 2 Class 3 Class 5 Class 6 Class 9a Class 9bApartments Hotels Office Shops Healthcare Schools &publicbuildings4 or more A A A A A A3 A A B B A A2 B B C C B B1 C C C C C CMax Storey Height by BuildingClassification
  4. 4. Rise instoreyType of ConstructionClass 2 Class 3 Class 5 Class 6 Class 9a Class 9bApartments Hotels Office Shops Healthcare Schools &publicbuildings4 or more A A A A A A3 A A B B A A2 B B C C B B1 C C C C C CMax Storey Height by BuildingClassificationCurrent PFC for NCC 2014
  5. 5. How does Australia Compare with therest of WorldwideUnlimited storey height
  6. 6. What limits timber construction in“dts” Building Regs – Fire• Type A & B dts requirements do notdirectly limit timber construction foro Beams,o Columns, ando Floors (other than lift pits)
  7. 7. What limits timber construction in“dts” Building Regs – Fire• Type A & B dts requirements do limittimber construction by requiring– External walls, and non-load bearinginternal walls required to be fire resisting tobe non-combustible construction– Load bearing internal walls are to beconstructed from concrete or masonry
  8. 8. What limits timber construction in“dts” Building Regs – Fire• Spec C1.1 Clause 2.2 Support for AnotherPart necessitates if the part it supports isrequired to be non-combustible, thenthat element is also required to be non-combustible• Therefore various walls supported byfloor, beams and columns must also benon-combustible
  9. 9. Fire Resistance Level (FRL)Full size fire resistance testsORFire resistance by calculation
  10. 10. Fire Resistance CriteriaStability Integrity InsulationPartition X XDoor X XLoad bearing wall X X XFloor – ceiling X X XBeam XColumn XFire resistant glazing X60 / 60 / 60- / 30 / -
  11. 11. Fire Protection – Two Methods MethodWrapped in Plasterboard Exposed timber
  12. 12. Calculations by AS 1720.4• Structural Only
  13. 13. Calculations by AS 1720.4
  14. 14. Integrity and Insulation• Shortly an EXPAN design guide willdevelopment a method for calculatingIntegrity and Insulation for floor and wallsystems• Basically it will say that 35 mm away from charlayer, timber’s temperature will be at roomtemperature
  15. 15. Fire Protection• Fire protection provided by increasedthickness to timber elements
  16. 16. Chat for FRL 90/90/90
  17. 17. Fire Protection• Beam and columnselements needs increasedthickness for fire so anextra thickness is placed onexposed facesTimber fire protection
  18. 18. Fire Protection• Shoulder to beam forms perfect corbel for floorcassette to sit on the beamTimber fire protection
  19. 19. Construction FiresFirst Interstate Bank CA, USA
  20. 20. Construction Site Fire Safetywww.expan.com.au
  21. 21. WoodSolutions: Design Guides• These free guides are related to fire design
  22. 22. WoodSolutions: Design Guides• These free guides are related to fireengineering and Alternative Solutions

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