UMass Design Building

TomS.Chung,AIALEEDBD+CPrincipal,LeersWeinzapfelAssociates

Umass AmherstDesignBuildingLeadingtheWaywithMassTimberSolutions

Disclaimer: This presentation was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board.


CourseDescription

Currentlyunderconstruction, theDesignBuilding attheUniversityofMassachusetts Amherst isthefirstofitskindintheU.S.Atfourstoriesand87,000sf,thismasstimberproject,designed byLeersWeinzapfelAssociates, featuresaglue-laminated (glulam)timbercolumn-and-beamframe,masstimber lateral force-resisting systems,compositecross-laminated timber(CLT)floorsystems,andunconventionalcantilevered forms.Italso includes anopenfloorplan,exposedmasstimberframingthroughout,andacomposite glulamzippertrussspanningacentralcommons,withagreenroofcourtyardabove.

Thispresentation bytheproject’sprincipal architectwillreviewtheprocessandcollaborationrequiredtosee thisgroundbreakingstructuretofruitioninasteel-dominated construction industry.Topicswillinclude design,detailing, procurementofmaterials, codeapprovalsandconstruction,withanemphasis onissues andsolutions.


LearningObjectives

•Explorethedesign team’sapproachtomaterialandconstructionselection foramasstimberbuilding inlieuoftraditional steelsystems.

•Discuss theuseofcomposite CLTfloorsystemsandassociated designconsiderations.

•Reviewthecodeapprovalandlocalpermittingsteps takentoachievecompliance forafirst-of-its-kind masstimberbuilding.

•Highlight innovativestructuralsolutions implemented bythedesignteaminthecentralcommonsandcourtyardinordertomeetmassingandoccupancyneeds.

TomS.Chung,AIALEEDBD+CPrincipal,LeersWeinzapfelAssociates

AGENDA/ OUTLINE

Introduction• Background & Context • Design Concept

Process• Mass Timber Structure Design• Steel Systems vs Wood Systems • Assuring the Client: Budget, Procurement & Code

Design Details and Construction• Central Commons and Courtyard Design


RegionalContext

ViewfromSite

BuildingConceptDiagram

CampusCirculation

CampusModel

SiteModel

ProgramOrganization

ProgramOrganization

SitePlan

RegionalContext

FenestrationConcept

ViewfromCampusCore

ViewfromHistoricStockbridgeWay

DesignProcess

SteelColumnGrid

TimberColumnGrid

PostandBeamStructuralFramework

Revit Model

StructuralFramework

StructuralSystems

TimberStructureRevitModel

CarbonSummary

Steel Post & Beam

Steel/Concrete Floors

Steel Deck Roof

Concrete Shafts

Steel Braces

GL Post & Beam

CLT/Concrete Floors

CLT Roof

CLT Shafts

Glulam Braces

CHANGE IS POSSIBLE EVERYWHERE

Steel



Glulam

GlulamBeamtoColumnConnection



Steel and Concrete

FloorSystem

Steel and Concrete

FloorSystem

CLT and Concrete

FloorSystem

CLT and Concrete

FloorSystem

CLTandConcreteCompositeFloor




RoofDeck

Steel Decking

RoofDeck

CLT Panels

ShearWalls

Concrete Shaft CLT Shaft

LateralCrossBracing

Steel Bracing Glulam Bracing

LateralCrossBracing

LateralCrossBracing

ProjectTeamandStakeholdersProcess:AssuringtheClient

Project Team

• Client: University of Massachusetts Building Authority

• User: University of Massachusetts, AmherstArchitecture & Design, LARP, Building Construction & Technology

• Architectural / Structural Design Team: Architect: Leers Weinzapfel AssociatesStructural Design Engineer: Equilibrium ConsultingSER: SGH

• AHJ:MA State Building InspectorMA Board of Appeals

• Construction Team:Construction ManagerTimber Fabricator and Installer



Key Issues•Danger of “Over Estimating Contingency” by Construction Managers or Cost Estimators due to the “Unknown”

•Importance of multiple Bidders

•Coordination of Fabricator and Installer Team

•Proper scoping of work for Bids. Especially if based on Progress Drawings

•Consideration of Contractor Reputation and History. It’s a small world!

BiddingandProcurementProcess:AssuringtheClient

PreliminaryEstimatesProcess:AssuringtheClient

TimbervsSteelBudgetComparisonProcess:AssuringtheClient

Fabricator/InstallerBidQuotesProcess:AssuringtheClient

CLT roof/floor panels and shear walls

CLT floor panels and glulam beams with composite concrete

AlternativeStructuralSystemsProcess:CodeReview&Variance

AlternativeStructuralSystemsProcess:CodeReview&Variance

TESTING

CentralCommonsandCourtyardDesign

StructuralChallenges:

•Longspanwithheavyloadingabove

•Minimizestructuraldepth

•Wetgardenonawoodstructure

CourtyardConceptSketch

PreliminaryCourtyardPlan

PreliminaryCourtyardSection

CentralSpaceStructuralConcepts

ZipperTrussFinalConcept

ZipperTrussModel

StructuralLoadingEfficiency

CourtyardSoilProfileRequirements

ModifiedFinalCourtyardPlan

CourtyardModelViews

CourtyardPlan

ZipperTrussModel

ReflectedCeilingPlan

CentralConnectorStudies



GrasshopperParametricDefinition

RhinoModelDetail

Construction Documents

CentralConnectorDesignAssist

ZipperTrussInstallation



CutawayModel

SectionThroughCommonsandLearningCourtyard

CentralCommons

LearningCourtyard

Spring2016

THANKYOU!

DesigningtheDesignBuildingatUMassAmherst

QUESTIONS?

ThisconcludesTheAmericanInstituteofArchitectsContinuingEducationSystemsCourse

TomS.Chung,AIALEEDBD+CPrincipal,[email protected]