Tom S Chung AIA LEED BD+C , Leers Weinzapfel Associates

IDBAMHERSTMA

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

IntegratedDesignBuildingUniversityofMassachuse8s,Amherst

UniversityofMassachuse8sBuildingAuthorityTheFirstCompositeCLTBuildinginUnitedStates

TomS.Chung,AIA,LEEDBD+C,NCARB

PrincipalLeersWeinzapfelAssociates

UPenn Gateway Building

LEERS WEINZAPFEL ASSOCIATES •  2007 AIA Firm of the Year

•  Top Ten_Architect 50_2015

•  Over 65 National and Regional Design Awards

•  5 LEED Gold Projects

•  Over 100 National and International Publications

MGH Museum of Innovation and Medical History






OSU East Regional Chilled Water Plant






EQUILIBRIUM VANCOUVER, CANADA



IntegratedDesignBuilding

How Change of Building Systems was possible?

INTRODUCTION •  Background & Context •  Design Concept

PROCESS •  Mass Timber Structure Design •  Steel & Concrete Systems vs Wood Systems •  Assuring the Client: Budget and Procurement •  Code Review and Variance

DESIGN DETAILS & CONSTRUCTION •  Central Commons and Courtyard Design

RegionalContextIntroducIon

RegionalContext

CampusMapwith3departments

SiteModel

CampusCirculaIonandContext

ConceptModel

BuildingConceptDiagram

WoodStructureandLandscape

ProgramOrganizaIon

SecIonalPerspecIve

ViewfromNPleasantStreet

ViewfromNPleasantStreet

ViewfromStockbridgeWay

IDBAMHERSTMADESIGNPROCESS

PredominanceofSteelinMAProcess:TimberStructureDesign

MassingOpIonsConsidered

ConceptModel

PreliminaryCentralSpaceViews

Steelvs.Timber:SchemaIcDesign



Steelvs.Timber:DesignDevelopment

Steelvs.Timber:DesignDevelopment

Revit Model

StructuralFramework

Revit Model

StructuralFramework

StructuralSystems

Steel Post & Beam

Concrete/Masonry Shafts

Steel/Concrete Floors

Steel Deck Roof

Steel Braces

GL Post & Beam

CLT Shafts

CLT/Concrete Floors

CLT Roof Glulam Braces

CHANGE IS POSSIBLE EVERYWHERE

GLPostandBeamBeamtocolumnConnec-ons



ShaTs

Concrete CLT

CLT/ConcreteFloors

CLT/ConcreteFloors

Holz-Beton-Verbund-System™ (HBV) Composite floor

CLT/Concrete Floors

Holz-Beton-Verbund-System™ (HBV) Composite floor

CLT/Concrete Floors

CLT/ConcreteFloors

CLT/ConcreteFloors

CLTRoof

CLTRoof

Steel CLT

GlulamBracing

GlulamBracing

ProjectTeamandStakeholdersProcess:AssuringtheClient

Project Team •  Client: University of Massachusetts Building Authority

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

•  Architectural / Structural Design Team: Architect: Leers Weinzapfel Associates Structural Design Engineer: Equilibrium Consulting SER: SGH

•  AHJ: MA State Building Inspector MA Board of Appeals

•  Construction Team:

Construction Manager Timber 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

PreliminaryEsImatesProcess:AssuringtheClient

TimbervsSteelBudgetComparison

Fabricator/InstallerBidQuotes

CLT roof/floor panels and shear walls

CLT floor panels and glulam beams with composite concrete

AlternaIveStructuralSystemsProcess:CodeReview&Variance

AlternaIveStructuralSystemsProcess:CodeReview&Variance

TESTING

ConcealedCeilingAreasProcess:CodeReview&Variance

ConcealedCeilingAreasProcess:CodeReview&Variance

CentralCommonsandCourtyardDesign


(Opposing)DesignParameters

MaximumplanIngwantedbutminimummaintenancedesiredHeaviestweightonthelongestspan

OpenatriumwantedwithminimumstructureheightWetgardenonawoodstructure

Nodirectloadpathononeside

Didwedoit?


CourtyardConceptSketch

PreliminaryCourtyardPlan

PreliminaryCourtyardSecIon


CentralSpaceStructuralConcepts

ZipperTrussPrecedent

ZipperTrussOpIons

ZipperTrussFinalConcept

ZipperTrussModel

StructuralLoadingEfficiency

CourtyardSoilProfileRequirements

ModifiedFinalCourtyardPlan

CourtyardModelViews

CourtyardPlan

CourtyardView

CommonsView

RhinosaurusModel

CentralConnectorStudies



CentralConnectorDesignAssist

GrasshopperParametricDefiniIon

RhinoModelDetail

Reflected Ceiling Plan

Profile and Layout

Construction Documents

CHANGEISPOSSIBLEEVERYWHERE!









THANKYOU!