WHM Structural Engineers

Brian Maver, P.Eng., LEED AP, Principal

• Who is WHMWho is WHM

• A unique system that we are studyingA unique system that we are studying• GoalGoal• TheoryTheory• Various Connection SolutionsVarious Connection Solutions• Concrete ToppingConcrete Topping• TestingTesting

• Other Innovative IdeasOther Innovative Ideas

• QuestionsQuestions

INTRODUCTION

WHO IS WHM?• Structural Engineering Structural Engineering

FirmFirm• We are in our 10We are in our 10thth year of year of

practice.practice.• Projects:Projects:

• Luxury HomesLuxury Homes• Wood-frame Townhomes and Wood-frame Townhomes and

Condos Condos • Mixed-use HighrisesMixed-use Highrises• Institutional projectsInstitutional projects

• Community CentresCommunity Centres• HealthcareHealthcare• EducationEducation

• Innovative SystemsInnovative Systems• HelixHelix• Composite Mass Timber FloorsComposite Mass Timber Floors• Wood-frame HighrisesWood-frame Highrises• Mass timber connectionsMass timber connections

UNIQUE SYSTEM REQUEST

• New floor systemNew floor system

• Goals:Goals:• Composite system with timber Composite system with timber

and concrete toppingand concrete topping• Topping to be part of the Topping to be part of the

structural systemstructural system• Easily installedEasily installed• Cost effectiveCost effective• Superb structural performanceSuperb structural performance• Lean towards sustainabilityLean towards sustainability

THEORY• Floors and beams in Floors and beams in

bendingbending• Top is in compressionTop is in compression• Bottom is in tensionBottom is in tension• Concrete good in Concrete good in

compressioncompression• Use Helix mix for crack control Use Helix mix for crack control

and flexureand flexure

• Timber is good in tensionTimber is good in tension

CONNECTIONS

• NailsNails• Poor performancePoor performance• Too much withdrawalToo much withdrawal

• Screws Screws • Labour intensiveLabour intensive• Screws need to be angled Screws need to be angled

appropriatelyappropriately

• HBV ConnectorHBV Connector• Labour intensiveLabour intensive• Epoxy injectedEpoxy injected• ExpensiveExpensive

• WHAT ELSE CAN BE USED??WHAT ELSE CAN BE USED??

CONNECTIONS

• Truss PlatesTruss Plates• Cost effectiveCost effective• Easy to installEasy to install• Panels can be shipped to sitePanels can be shipped to site

TESTING

• FPInnovationsFPInnovations• Full scale testFull scale test• Stiffness, vibration, strengthStiffness, vibration, strength

• UBCUBC• Stiffness, vibration, strengthStiffness, vibration, strength• Compare results to other tested Compare results to other tested

systemssystems

Other Innovative IdeasOther Innovative Ideas HelixHelix

Mass timber connectionsMass timber connections

Wood-frame highriseWood-frame highrise

Any questions?Any questions?

Thank-you!Thank-you!• Brian Maver, P.Eng., LEED APBrian Maver, P.Eng., LEED AP

CLOSING