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Mid-rise timber constructionoverview
[email protected] Development ManagerMid-Rise Construction
- Different system options
- NCC 2019 changes
- Mid-rise Advisory Program
- Conclusion
OUTLINE
MID-RISE WOOD PRODUCTSStrength graded, kiln dried
Cross Laminated Timber (CLT) Laminated Veneer Lumber (LVL)
Studs and Plates Glulam (GLT)Joists and Trusses
AS1720:CALCULATION
AS1684:DETAILING
LIGHT (STUD) FRAMESScaling up Residential Design
MORE OR STRONGER STUDS AT
LOWER WALLS
STANDARDFRAMING AT
UPPER WALLS
CROSS LAMINATED TIMBER (CLT)A “jumbo plywood”
DIAPHRAGM, LESS SPLITS,
DIMENSIONALSTABILITY
LAMINATED VENEER LUMBER (LVL)High strength&stiffness/weight ratio
FLOORCASSETTES,BRACING,3D TRUS
GLULAM (GLT)Flexible floorplans, aesthetics
3D TRUSSES,POST & BEAM,FLOOR SLABS
DIFFERENT SYSTEMSCAN BE COMBINED IN A PROJECT…
Light Frames
Post & Beam
Post-Tensioned
CLT, LVL, GLT…
CassetteFloor/Wall
FRAMES
PANELS
VOLUMES
PortalFrames
Unit, pod, shaft, stair..
...TO GET HARMONY
AND OPTIMSERESULTS.
RESIDENTIALOffsite assembly, onsite speed
Timelapse
COMMERCIALHybrid structure, optimal result
Timelapse
STUDENT ACCOMMODATIONMassive timber, passive house
SAFETY & EFFICIENCYDesign For Manufacturing and Assembling
STIFFER CORESfor slender buildings
OPEN FLOORPLANSfor larger grids / flexible use
CONTROL FLOOR DEPTHto limit building height
ACOUSTICS Timber is intrinsically quiet
HIGH DAMPING,
LOWFLANKING
DURABILITYA LOT OF EXPERIENCE
TERMITES
CORROSION
OF FASTENERS
DECAY
(ABOVE GROUND)BRISBANE
1913 & 2018
NCCCOMPLIANTBASED ONAS 1720+ EC5
ACRO-TIM Automated Calculation ROutines of mid-rise TIMber structures under combined wind and quake actions (VNA440-1718)
FREEASSISTANCE
TO ENGINEERSFOR MID-RISE
PROJECTS
STRUCTURAL DESIGNGuide and software
COST ENGINEERINGHow to cost timber structures
COMING SOON, WITH
A SUMMARYOF MAP’sDATA AND
EXPERIENCES
ZERO70%
TOTAL ON-SITE WASTE REDUCED BY
TIMBER WASTE GENERATED
ON SITE
WASTE GENERATED PER WEEK
Eurban, UK Lendlease, Vic Strongbuild, NSW
WASTE REDUCTIONIS VERY SIGNIFICANT
THE ONLY RENEWABLEBUILDING MATERIALS
Once turned into Engineered Wood Products, this equates to
970 m31-1.5 hrsLendlease, Melbourne
2,700 m33-4 hrsStrongbuild, Sydney
4,300 m35-6.5 hrsAtelier, Melbourne
1,700 m32-2.5 hrsMultiplex, Melbourne
11-15 m3/min
30-40 m3/min
Australiansoftwoodplantations(>1Mha) grow
HEALTHIER FOR OUR ENVIRONMENT
Wood is a “sink” for CO2 , with • low embodied energy and • low operation energy
Image: chrofi.com
https://www.woodsolutions.com.au
/articles/carbon-storage
Typically from lower blood pressure and heart rate, as demonstrated by clinical researches:• school children have less
stress and concentrate better (Austria)
• timber-built retirement villages promote tranquillity (UK, Finland)
• benefits in timber-based neurological clinics (Japan).
HEALTHIER FOR HUMANS
http://makeitwood.org/documents/doc-1501-
wood---nature-inspired-design-report-v3.pdf
Key findings (1,000 office workers):
• higher levels of satisfaction
• higher levels of concentration
• improved mood and productivity
• less sick leave
WELLNESS AND PRODUCTIVITY IN OFFICES
https://www.woodsolutions.
com.au/wood-at-work
- Different system options
- NCC 2019 changes
- Mid-rise Advisory Program
- Conclusion
OUTLINE
PERFORMANCE REQUIREMENTSOur Guidelines and Test Reports
OUR TDGsARE ALMOST
AN «INDUSTRY STANDARD»
• automatic sprinkler systems
• fire-protected structural timber (general or massive)
• non-combustible insulation
• cavity barriers (if applicable)
DTS PROVISIONS (2016)A direct pathway to approval
• automatic sprinkler systems
• fire-protected structural timber (general or massive)
• non-combustible insulation
• cavity barriers (if applicable)
DTS PROVISIONS (2016)A direct pathway to approval
< 75mm > 75mm
and glued
FIRE-PROTECTED TIMBERRequirements
> 75mm
and glued
< 75mm
GENERAL: 2x13mm FRPB (each side for walls, lower side for floors)
MASSIVE: 1x16mm FRPB (each side for walls, lower side for floors)
MANYALERNATIVE
LAY-UPSARE
POSSIBLE
NCC2019Another step forward
• Fire protected timber as DTS for all the Building Classes• Sprinklers for all Class 2&3 mid-rise buildings, regardless of
the construction material• With sprinklers, an increase in travel distances to fire exits,
from 6m to 12m (bigger footprint), for all building materials• The definition of Massive Timber now includes also “non-
chemically bonded” materials• Most sarking products now deemed “non combustible”.
- Different system options
- NCC 2019 changes
- Mid-rise Advisory Program
- Conclusion
OUTLINE
CODE,CRANE,
SEQUENCE,CONFLICTS,SYSTEMS...
THE MID-RISE ADVISORYFeasibility analysis
PROGRAM,DETAILS,
ACOUSTICS,COSTS...
THE MID-RISE ADVISORYCosting analysis
EXAMPLEBenchmarking a built project
Type Lay-up Depth Fire Acoustic
• Carpet• 2x 18mm MgOx Board• 15mm Plywood• 200mm Engineered Joist with
75mm Glasswool• Furring channel on resilient m.• 2x 16mm FRPB
330mm FRL90/90/90
Rw+Ctr: 64Lnw: 34
• Carpet• 200mm Concrete• 60mm Fiberglass insulation• Suspended steel grid• 13mm Plasterboard
330mm FRL90/90/90
Rw+Ctr: 64Lnw: 29
QUICKER TO INSTALL
=LOWER COST
EXAMPLEBenchmarking a built project
Type Lay-up Depth Fire Acoustic
• 2x 13mm FRPB• 90 x 45 stud• 20 mm gap• 90 x 45 stud• 2x 13mm FRPB
257mm FRL90/90/90
Rw+Ctr: 58
• 2x 13mm FRPB• 64mm Steel Stud• 11kg/m3 insulation• Gap (for columns)• 64mm Steel Stud• 13mm FRPB
300mm FRL90/90/90
Rw+Ctr: 59
INCREASE OF NET
SELLABLE AREA
2 YEARS OF MID-RISE ADVISORYNumbers (almost) tell the story
MOST PROJECTS ARE STILL
AT PLANNINGSTAGE
ALREADY 15 PROJECTSare being built or in tender
WOODUSED:
30,000 m3$38 Mil.
7 BUILT OR ON SITE
8 NOW IN TENDER
SOME TYPICAL FEATURESof a Mid-Rise project
• Urban infill (boundaries, shading)
• Height/shading constraints
• Eccentric core
• Cantilevers (balconies/floors)
• Voids, wall misalignements
• Extension over existing buildings
• Weak soils
• Acoustic/Fire integration
UNDERSTANDING MID-RISEDemo at Holmesglen TAFE
IMPROVE CONFIDENCE
OF SURVEYORS AND
BUILDERS
WITH A FIXED AND A
DISMOUNTABLECOMPONENT
• National advisory + R&D program focused on skills development
• Partnership across the whole building industry, based on existing and new “best practices”, that can maximise the results for both the partners and the community
PARTNERSHIPA flexible and efficient tool for the next stage
Activity ALL OPT
Advisory to design/development teams (feasibility, costing…) X
Focus on Institutions and Government initiatives (eg schools, social housing…) X
Improve off-site solutions, site safety and efficiency X
Develop Industry Standards and Codes of Practice X
Support education programs in collaboration with Universities & TAFEs X
Market Intelligence (planning reports, trend analyses…) X X
Accreditation/certification training programs/schemes X X
Tender Analysis and Value Management assessment X
Innovation, R&D and testing to develop company/shared IP X
Tailored staff training for partners (internship with the advisory team) X
ACTIVITIESA flexible mix with multiple benefits
ALL = Common activities shared by all the Partners. May involve external stakeholders.
OPT = Company-tailored, optional activities. May require confidentiality.
EXPECTED OUTCOMESwith prudent assumptions
JUST FOR MID-RISE,WE EXPECTA 20-30%GROWTH
PLUS THEGROWTH FOR ASSOCIATEDMATERIALS & SERVICES
- Different system options
- NCC 2019 changes
- Mid-rise Advisory Program
- Conclusion
OUTLINE
THE VALUE PROPOSITION OFTIMBER OFF-SITE SYSTEMS
THE BESTSOLUTION FOR
THE RIGHTOPPORTUNITY
BUILD OUR CITIES IN TIMBER ?IT’S HAPPENING…
HOW WILL TIMBER STRUCTURES BE USED IN YOUR NEXT PROJECT ?