mid-rise timber construction architectural detailing ... · mid-rise timber construction –...
TRANSCRIPT
-
Mid-rise Timber Construction
Architectural Detailing & Specification:
Dr.David BylundProgram Develop ManagerMid-Rise Construction
Architectural Design Consideration StreamSession A:6
-
Mid-rise
What is Mid-rise?
-
Apartments (Class 2) Hotels (Class 3) Office Buildings (Class 5)
DTS Building Classes
-
Cavity barriers
Non-combustible insulation
Encapsulation
Automatic sprinklers
Timber Structure
The System
Deemed to Satisfy Provisions include:
-
Provide false ceilings
Self contained heating and cooling for SOUs
Timber specific fire and acoustic considerations
Avoid hot works
Penetrate shaft or duct walls where possible
Make shaft or duct walls readily accessible
Different approaches for different building classes
Some Key Points to Remember:
-
Layout Considerations: Building Class 2 & 3: SOU Fire Compartmentalisation & Service Shafts
Residential Buildings: Apartments (Class 2) and Hotels (Class 3)
Typical Apartment Building Floor Plan
Use service shafts distributed around the floor for services such as:
DrainsWaste pipesVent pipes
Each SOU is a fire compartment (including bathrooms and kitchens)
-
Maintain fire encapsulation integrity
Building Services Layout Considerations: Building Class 2 & 3
Sole Occupancy Unit
Adjacent
SOU
Adjacent
SOUAdjacent
SOU
Adjacent SOU
Maintain the integrity of the fire
encapsulation
-
Building Services Layout Considerations: Building Class 2 & 3
Sole Occupancy Unit
Adjacent
SOU
Adjacent
SOUAdjacent
SOU
Adjacent SOU
False ceilings
Falsewalls
Skirting ducts
Plumbing in floor void
How can service penetrations be minimised through fire barriers?
-
Service Runs: SOUs
Vertical ServiceRiser
Horizontal Service Run
Fire-ratedLining
Typical Distribution of Services for an Apartment
-
Service RunsFire-protection of the timber is maintainedFRL and RISF (or MRISF) is not compromised
Opening protected by a pillow, mineral fibre batt or other proprietary fire protection system
Trimmer
Opening lined to maintain FRL and RISF of timber element
Fire resistant seal
-
Layout Considerations False Ceilings
False ceilings house:
Fire-rated
plasterboard
Non-fire-rated
false ceiling liningSprinklers Down
Lights
servicesdown lights
fans sprinklers
Place in or above a non-fire-rated face
Avoid penetrating thefire resisting plasterboard lining
-
Layout Considerations False Wall Lining
Use false walls or concealed voids
Non-fire-rated
lining
Fire-rated lining
Electrical
switches
and wiring
-
Fire rated walls risk compromise if bath and shower base units are recessed into the wall.
Solution:
Layout Considerations:False Wallsin Bathrooms
Provide additional water resistant lining over the top.
Batten out the wall
Place insulation in the cavity
-
Skirting Cable Ducts
Fit electrical services behind cable ducts
Cable duct for
services
Avoid penetrating fire protected timber elements
Allows for easy reconfiguration if necessary
Switch plates in door architraves
-
Typical Distribution of Services for an Apartment
Fire-rated
Lining
Service Runs Detailing Openings through a Wall
-
Service Runs Detailing Openings through a Wall
Typical Distribution of Services for an Apartment
-
Distribution of Services - Risers in Lobby:Building Class 2 or 3
Services distributed to
SOUs above a false
ceiling
Service risers with easy access for
inspection and reconfiguration of services
-
NRAS Inveresk University of Tasmania Student ApartmentsUsed with permission
An Example:Shafts and Horizontal Runs
-
NRAS Inveresk University of Tasmania Student ApartmentsUsed with permission
An Example:Major Services Riser
-
Layout Considerations - Service Shafts:Office Buildings - Class 5
Very little fire compartmentation required in office buildings
Locate facilities such as toilets, kitchens and service shafts around the cores.
One or more cores constructed around lift and stair shafts.
-
Avoid using cavities within fire-protected timber elements
Typical SOU SectionNTS
Use false ceilings, walls and risers for sprinklers, downlights, services etc.
In Summary: