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Brian S. LottBrian S. LottThe Pennsylvania State UniversityThe Pennsylvania State UniversityDepartment of Architectural EngineeringDepartment of Architectural EngineeringStructural EmphasisStructural Emphasis
Bucknell Recreation and Athletic CenterBucknell Recreation and Athletic Center
East Buffalo Township East Buffalo Township -- Lewisburg, PennsylvaniaLewisburg, Pennsylvania
Bucknell Athletic CenterBucknell Athletic CenterOwner :
Bucknell UniversityBucknell UniversityMoore AvenueMoore AvenueLewisburg, PA 17837Lewisburg, PA 17837
Project Players :Ewing Cole Cherry Ewing Cole Cherry BrottBrott -- A/E ServicesA/E ServicesOffice of Physical Plant Office of Physical Plant -- Project ManagingProject ManagingR.S. Mowery & Sons R.S. Mowery & Sons -- CM / Site SuperintendentCM / Site SuperintendentSteel Subcontractor Steel Subcontractor -- Stewart AmosStewart AmosConcrete Subcontractor Concrete Subcontractor -- ZartmanZartman ConstructionConstruction
Construction Dates :StartStart -- July 2001July 2001Target FinishTarget Finish -- March 2003March 2003Arena FinishArena Finish -- December 2002December 2002
Brian S. LottStructural
Presentation OutlinePresentation OutlineBrian S. Lott
Structural
Project Overview; Site, Existing Structures, & ConditionsSite, Existing Structures, & Conditions
Arena Structural Divisions; Levels, Roof, Lateral, Floors, & FoundationLevels, Roof, Lateral, Floors, & Foundation
Depth Study; StructuralStructural
Breadth Studies; Mechanical & ArchitectureMechanical & Architecture
Summary
Questions
Site Plan / Facility OverviewSite Plan / Facility OverviewBrian S. Lott
Structural
Existing ConditionsExisting ConditionsBrian S. Lott
Structural
Building Levels
Ground (1Ground (1stst) Level) Level
Concourse LevelConcourse Level
Mezzanine LevelMezzanine Level
Partial Mezzanine LevelsPartial Mezzanine Levels
Existing Conditions, Cont’d.Existing Conditions, Cont’d.Brian S. Lott
Structural
Roof System
Existing Conditions, Cont’d.Existing Conditions, Cont’d.Brian S. Lott
Structural
Lateral System
N N
Existing Conditions, Cont’d.Existing Conditions, Cont’d.Brian S. Lott
Structural
Floor SystemComposite Slab/DeckComposite Slab/Deck
Existing Conditions, Cont’d.Existing Conditions, Cont’d.Brian S. Lott
Structural
Foundation
Presentation OutlinePresentation OutlineBrian S. Lott
Structural
Project Overview; Site, Existing Structures, & Conditions.Site, Existing Structures, & Conditions.
Arena Structural Divisions; Levels, Roof, Lateral, Floors, & Foundation.Levels, Roof, Lateral, Floors, & Foundation.
Depth Study; StructuralStructural
Structural DepthStructural DepthBrian S. Lott
Structural
Roof FramingLong Span JoistsLong Span JoistsNorthNorth--South Truss ImplementationSouth Truss Implementation
Floor FramingOpen Web Steel Joist with Concrete SlabOpen Web Steel Joist with Concrete Slab
Structural Depth, Cont’d.Structural Depth, Cont’d.Brian S. Lott
Structural
Roof Framing
Truss Truss –– T1T1
Long SpanLong SpanRoof JoistsRoof Joists
Structural Depth, Cont’d.Structural Depth, Cont’d.Brian S. Lott
Structural
EXISTING Roof Joists
Span = 158’Span = 158’--10”10”Tributary Width = 11’Tributary Width = 11’--0” (0” (TypTyp.).)
Dead Load = 10.5 Dead Load = 10.5 psfpsf + Self Weight+ Self WeightLive Load = 30 Live Load = 30 psfpsf
Vertical Distance:Vertical Distance:wrtwrt Top Chord Camber (Change in Height) = 2.03”Top Chord Camber (Change in Height) = 2.03”
Vertical Displacement:Vertical Displacement:@ Critical Node = 1.17”@ Critical Node = 1.17”
Structural Depth, Cont’d.Structural Depth, Cont’d.Brian S. Lott
Structural
NEW Roof Joists
Span = 158’Span = 158’--10”10”Tributary Width = 14’Tributary Width = 14’--3 1/2” (3 1/2” (TypTyp.).)
Dead Load = 10.5 Dead Load = 10.5 psfpsf (SW included in (SW included in VulcraftVulcraft designation)designation)Live Load = 30 psf(14.29’) = 429 Live Load = 30 psf(14.29’) = 429 plfplf
Designation; 112SLH21, NucorDesignation; 112SLH21, Nucor--VulcraftVulcraftLL/ft = 516 LL/ft = 516 plfplfTotal (Safe) Capacity = 770 Total (Safe) Capacity = 770 plfplfApprox. Wt. = 91 Approx. Wt. = 91 plfplf
Structural Depth, Cont’d.Structural Depth, Cont’d.Brian S. Lott
Structural
NEW Trusses – T2, East-West
Span = 171’Span = 171’--5 1/2”5 1/2”Tributary Width ≈ 97’Tributary Width ≈ 97’--0” 0”
Configuration:Configuration:Top Chord Pitch* = 3/8”/ft (No Bottom Chord Pitch)Top Chord Pitch* = 3/8”/ft (No Bottom Chord Pitch)# of Interior Panels = 11 (Reduced from 13)# of Interior Panels = 11 (Reduced from 13)
Member Sizes;Member Sizes;Top Chord: W30X108Top Chord: W30X108 Web: W18X35Web: W18X35 Bottom Chord: W12X16Bottom Chord: W12X16
Dead Load* = Self WeightDead Load* = Self WeightLive Load = 30 Live Load = 30 psfpsf
Supporting Wide Flange Column Layout: Discussed Later (Arch. BrSupporting Wide Flange Column Layout: Discussed Later (Arch. Breadth)eadth)
Structural Depth, Cont’d.Structural Depth, Cont’d.Brian S. Lott
Structural
NEW Open Web Steel Joist (w/ Concrete Slab) Floor System
Layout:Layout:Long Direction = 39’Long Direction = 39’--0”0” (N(N--S)S)Short Direction = 33’Short Direction = 33’--6”6” (E(E--W)W)Slab Depth = 2.5”Slab Depth = 2.5”Deck Depth = 9/16” Deck Depth = 9/16” Form DeckForm Deck, USD, USDJoist Span = 33’Joist Span = 33’--6”6”
Designation; 18K5, NCJ/SJI (Designation; 18K5, NCJ/SJI (wrtwrt 34 ft. span)34 ft. span)LL/ft = 110 LL/ft = 110 plfplfApprox. Wt. = 34 Approx. Wt. = 34 plfplf
Presentation OutlinePresentation OutlineBrian S. Lott
Structural
Project Overview; Site, Existing Structures, & Conditions.Site, Existing Structures, & Conditions.
Arena Structural Divisions; Levels, Roof, Lateral, Floors, & Foundation.Levels, Roof, Lateral, Floors, & Foundation.
Depth Study; StructuralStructural
Breadth Studies; Mechanical & ArchitectureMechanical & Architecture
Breadth StudyBreadth StudyBrian S. Lott
Structural
Mechanical
Existing Air Handling System: CAV & VAV UnitsExisting Air Handling System: CAV & VAV UnitsNeighboring (Natatorium) Air Handling System: CAV Neighboring (Natatorium) Air Handling System: CAV –– Direct Expansion UnitsDirect Expansion Units
Design Focus: DehumidificationDesign Focus: Dehumidification
Method: Outside Air AllMethod: Outside Air All--Season Pool Dehumidification UnitSeason Pool Dehumidification Unit
Wringer 2000 Wringer 2000 –– Des ChampsDes Champs
Breadth Study, Cont’d.Breadth Study, Cont’d.Brian S. Lott
Structural
Architecture
Existing Architectural Style: GeorgianExisting Architectural Style: GeorgianPoor Transportation: Narrow Corridors. Limited Entrance, EgresPoor Transportation: Narrow Corridors. Limited Entrance, Egress,s,
& Elevator Access& Elevator Access
Design Focus: Improve Interior TransportationDesign Focus: Improve Interior Transportation
Method: Elimination of Concourse/Event Level ColumnsMethod: Elimination of Concourse/Event Level Columns
Roof Design SummaryRoof Design SummaryBrian S. Lott
Structural
NewRoof Framing
EE--W TrussesW Trusses
SLH LongSLH LongSpan RoofSpan RoofJoistsJoists
SummarySummaryBrian S. Lott
Structural
ConclusionConclusionStructuralStructuralOverallOverall
RecommendationRecommendationTransportation / Column ReductionTransportation / Column ReductionHVACHVAC
ConstructabilityConstructabilityTruss SplicingTruss SplicingJoist Erection / SchedulingJoist Erection / Scheduling
Design Team RecognitionDesign Team RecognitionBrian S. Lott
Structural
Ewing Cole Cherry Ewing Cole Cherry BrottBrott::
Bill McCullough, Sports/Project ArchitectBill McCullough, Sports/Project Architect
Jared Jared LoosLoos, Head Structural Engineer, Head Structural Engineer
Peter Welsh, Structural EngineerPeter Welsh, Structural Engineer
Brian Brian PeaselyPeasely, Mechanical Engineer, Mechanical Engineer
Any Questions?Any Questions?Brian S. Lott
Structural
Thank You!Thank You!Brian S. Lott
Structural
Thanks!
Gracia
s MAHALODanke
Merci
GrazieShieh-shieh
Arigatou
SPASIBO