presentation outline...building overview 3- bedroom2- bedroom 2- bedroom architectural breadth...
TRANSCRIPT
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Kurt Krasavage Structural OptionChevy Chase, Maryland
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Presentation Outline
- Building OverviewBuilding Overview- Thesis Objective- Architectural Breadth Study- Structural Depth Study- Construction Breadth Study
S mmar and Concl sions- Summary and Conclusions- Acknowledgements- Questions
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Building Overview
Features
15 - Story, U-shaped residential tower consisting of 432 units within a world-class urban development.
Building Overview
Thesis Objective
Architectural Breadth
LocationProject TeamStructural System
2 - levels of underground parking
1,000 S.F. pool located on the 13th fl
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Size: 479,000 S.F.Cost: $94 MillionDates of Construction:
May 2006 – February 2009
13th floor.g
Questions
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Building OverviewBuilding Overview
Thesis Objective
Architectural Breadth FeaturesStructural Depth
Construction Breadth
Conclusions
Acknowledgements
LocationProject TeamStructural System
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Questions
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Building OverviewOwner/Developer:Archstone-Smith
Architect:SK&I Architectural Design Group
Landscape Architect: SK&I Architectural Design Group
Owner
Turner Construction
Building Overview
Thesis Objective
Architectural Breadth FeaturespCarol R. Johnson Associates
Structural Engineer:Smislova, Kehnemur, & Associates
MEP Engineer:GHT Limited
Civil Engineer:
SK&I Architectural Design Group
SubcontractorsSmislova Kehnemur & Associates
GHT Limited
Turner ConstructionStructural Depth
Construction Breadth
Conclusions
Acknowledgements
LocationProject TeamStructural System
Loiederman Soltesz AssociatesInterior Designers:
Handel ArchitectsGeneral Contractor:
Turner Construction
SubcontractorsSmislova, Kehnemur, & Associates
Loiederman Soltesz Associates
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Questions
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Building OverviewThe foundations consist of spread and combined footings.
Foundations
Flat plate 7 ½” thick unbounded post‐tension slabs, with two‐way bottom
Typical FloorsBuilding Overview
Thesis Objective
Architectural Breadth FeaturesThese footings are typically 12’ X 12’ by 24” thick.
p , yreinforcement of #4@24” continuous bars each way.
Normal weight concrete at 5000 psi.
f fReinforced concrete columns that
Columns
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
LocationProject TeamStructural System
The post‐tension cables consist of uniform tendons being pulled in the S‐N direction and the banded tendons are in the pulled in the W‐E direction of the building
Reinforced concrete columns that are typically 16”x28” and 16”x32”. The typical reinforcement is 8 #7 or 8 #8 bars, but varies throughout typical levels.
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Questions
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Building Overview•Concrete shear walls around the two elevator cores.
Lateral SystemBuilding Overview
Thesis Objective
Architectural Breadth Features
•Three other shear walls spread out on the west wing side of the building.
Typical thickness of each shear
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
LocationProject TeamStructural System
•Typical thickness of each shear wall is approximately 12”
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Questions
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Thesis Objective
Architectural Breadth • Integrate a new column layout that coincides with
Architectural Goals
• Design floor system and supporting elements to resist
Structural GoalsConstruction Goals
Accelerate the speed of
Building Overview
Thesis Objective
Architectural Breadth
Structural DepthConstruction Breadth
layout that coincides with existing building architecture
• Improve overall quality of floor plans
supporting elements to resist gravity loading for the proposed building
•Design a lateral system that will resist wind and seismic
Accelerate the speed of construction and save the owner as much money as possible
Structural Depth
Construction Breadth
Conclusions
Acknowledgements• Design apartments that meet square footage requirements while maintaining style, shape, and overall quality
will resist wind and seismic forces due to strength and servicability for the proposed structure
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Questions
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Architectural BreadthThesis Assumption
Proposed Layout Building Dimensions
Assume that the two levels f d d ki ill
Building Overview
Thesis Objective
Architectural BreadthBuilding DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plan
of underground parking will be capable of being integrating within the proposed column layout
Structural Depth
Construction Breadth
Conclusions
AcknowledgementsEnlarged View of Typical Apartments
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Questions
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Architectural BreadthExisting Building Proposed Layout
Building Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plang
QuestionsEnlarged View of Typical Apartments
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Architectural BreadthFloor-to-Floor HeightsBuilding Dimensions
Building Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plang
QuestionsEnlarged View of Typical Apartments
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Architectural BreadthBuilding Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plang
QuestionsEnlarged View of Typical Apartments
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Architectural BreadthProposed BuildingExisting Building
Building Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plang
QuestionsEnlarged View of Typical Apartments
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Architectural BreadthProposed BuildingExisting Building
Building Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plang
QuestionsEnlarged View of Typical Apartments
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Architectural BreadthBuilding Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plang
QuestionsEnlarged View of Typical Apartments
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Architectural BreadthStudio 1- BedroomBuilding Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
500 S.F712 S.F
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plang
QuestionsEnlarged View of Typical Apartments
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Architectural Breadth1- Bedroom 1- BedroomBuilding Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
600 S.F1000 S.F
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plang
QuestionsEnlarged View of Typical Apartments
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Architectural Breadth2- Bedroom 2- Bedroom3- BedroomBuilding Overview
Thesis Objective
Architectural Breadth Proposed Layout Building Dimensions
1400 S.F1062 S.F
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Building DimensionsSquare FootageLocation of Lateral Resisting ElementsFunctionalismInclusive Floor Plan
712 S.F.
g
QuestionsEnlarged View of Typical Apartments
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Structural Depth
Alternate Systems
Composite Deck w/ Non-Composite Steel Framing
Post-TensionedBuilding Overview
Thesis Objective
Architectural Breadth yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Frames
Two-way Flat Plate
Girder-Slab
Structural Depth
Construction Breadth
Conclusions
Acknowledgements Braced FramesDrift
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Questions
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Structural DepthGirder-Slab Advantages
•Low floor-to-floor heights
S f d b ildi l i
Building Overview
Thesis Objective
Architectural Breadth Alternate Systems• Super-fast structure and building completion
• Reduced building structure weight
• Limited weather impact
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Frames
• Limited on-site labor
• Reduced on-site overhead costs
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Questions
Braced FramesDrift
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Structural DepthPrecast Hollow Core Planks
Building Overview
Thesis Objective
Architectural Breadth Alternate Systems
Supporting D-Beams
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Framesg
Questions
Braced FramesDrift
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Structural Depth
Girders
Main Roof FramingBuilding Overview
Thesis Objective
Architectural Breadth Alternate SystemsGirders
BeamsW16X31
W24X68Structural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Frames
W12X40 through W12X120
Columnsg
Questions
Braced FramesDrift
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Structural DepthExisting Building Wind Distribution Proposed Building Wind Distribution
Building Overview
Thesis Objective
Architectural Breadth Alternate SystemsStructural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Framesg
Questions
Braced FramesDrift
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Structural DepthExisting Building Seismic Distribution Proposed Building Seismic Distribution
Building Overview
Thesis Objective
Architectural Breadth Alternate SystemsStructural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Framesg
Questions
Braced FramesDrift
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Braced FramesEast – West DirectionBuilding Overview
Thesis Objective
Architectural Breadth Alternate Systems
Structural Depth
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Framesg
Questions
Braced FramesDrift
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Braced Frames North - South DirectionBuilding Overview
Thesis Objective
Architectural Breadth Alternate Systems
Structural Depth
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Framesg
Questions
Braced FramesDrift
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Drift due to WindNorth - South Direction
Drift due to WindEast – West DirectionBuilding Overview
Thesis Objective
Architectural Breadth Alternate Systems
Structural Depth
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Framesg
Questions
Braced FramesDrift
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Drift due to SeismicNorth - South Direction
Drift due to SeismicEast – West Direction
Building Overview
Thesis Objective
Architectural Breadth Alternate Systems
Structural Depth
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
yOverview of Girder-SlabFloor FramingWind DistributionSeismic DistributionBraced Framesg
Questions
Braced FramesDrift
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Cost Analysis
Existing Building Cost Proposed Building CostBuilding Overview
Thesis Objective
Architectural Breadth
Construction Breadth
Scheduling ImpactsEstimated Revenue
Structural Depth
Construction Breadth
Conclusions
AcknowledgementsProposed building is approximately 25% more expensive to construct
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Questions
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Existing Building Schedule Proposed Building ScheduleBuilding Overview
Thesis Objective
Architectural Breadth Cost Analysis
Construction Breadth
Proposed building will decrease duration of construction of the structure by 4 - months
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Scheduling ImpactsEstimated Revenue
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Questions
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Existing BuildingRent Generated per Month
Proposed BuildingRent Generated per MonthBuilding Overview
Thesis Objective
Architectural Breadth Cost Analysis
Construction Breadth
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Scheduling ImpactsEstimated Revenue
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Questions
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Revenue generated by Rent Proposed BuildingRent Generated per MonthBuilding Overview
Thesis Objective
Architectural Breadth Cost Analysis
Construction Breadth
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Scheduling ImpactsEstimated Revenue
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Questions
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Conclusion and Summary
Architectural Breadth• Integrate a new column layout that coincides with existing building architecture
Architectural Goals Summary• 17’ X 28’ bays with braced frames• Gained an additional 45,000 S.F. which resulted in 70 more apartments• Corridors were shortened and opened up t t th f li f lki th h
Building Overview
Thesis Objective
Architectural Breadth
Structural DepthConstruction BreadthOverall Conclusion
existing building architecture
• Improve overall quality of floor plans
• Design apartments that meet
to prevent the feeling of walking through a tunnel• An additional elevator was integrated with proposed system•Architecture not only complied with square footages but provided more variety i e non-
Structural Depth
Construction Breadth
Conclusions
Acknowledgements es g apa e s a eesquare footage requirements while maintaining style, shape, and overall quality
footages, but provided more variety, i.e. non-typical apartments, option of a 3-bedroom and also used the concept of mirroring apartments to save money on construction costs.
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Summary• Foundations will not significantly change due to the loading on columns and weight of the building
R ll d W12 h li d d
• Design floor system and supporting elements to resist gravity loading for the proposed
Structural GoalsBuilding Overview
Thesis Objective
Architectural Breadth
Conclusion and Summary
Architectural Breadth• Rolled W12 shapes were spliced and redesigned every 4- floors
•8” x 4’0” Hollow core planks with a 2” topping spanned 28’, while DB9 X46 beams spanned 17’ Typical grout; 6ksi
gravity loading for the proposed building
•Design a lateral system that will resist wind and seismic forces due to strength and
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Structural DepthConstruction BreadthOverall Conclusion
beams spanned 17 . Typical grout; 6ksi
• Lateral system consisted of 20 specially concentric braced frames that resisted strength and met servicability requirements for drift due to seismic and wind loads
o ces due o s e g a dservicability for the proposed structure
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Summary• Proposed building system was found to be approximately 25% more expensive to construct upfront• Proposed system was estimated to cost $7 876 923 00
Construction Goals
Accelerate the speed of construction and save the
Building Overview
Thesis Objective
Architectural Breadth
Conclusion and Summary
Architectural Breadth$7,876,923.00• Highly probable that the proposed building will be completed at least 4- months earlier than existing building• The addition apartments will generate enough revenue to offset the cost of
construction and save the owner as much money as possible
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Structural DepthConstruction BreadthOverall Conclusion
enough revenue to offset the cost of construction and additionally save the owner $750,000,000• Additional revenue for the 70 additional apartments will generate income throughout the life of the building
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Overall Conclusion and Recommendation
Changing the current structural system of a two-way flat plate post-tensioned slab with shear walls to a precast girder slab floor utilizing
Thesis Assumptions
•Assume that the two levels of underground parking will be
Building Overview
Thesis Objective
Architectural Breadth
Conclusion and Summary
Architectural Breadthprecast girder-slab floor utilizing braced frames would save the owner approximately $750,000 and improve the overall floor plan. This number does not include the future revenue generated by the 70
g p gcapable of being integrated within the proposed column layout
Structural Depth
Construction Breadth
Conclusions
Acknowledgements
Structural DepthConstruction BreadthOverall Conclusion
g yadditional apartment throughout the life of the building
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AcknowledgementsAcknowledgements
• My parents, Stuart and Jacqueline Krasavage
Building Overview
Thesis Objective
Architectural Breadth
Questions
g• Turner Construction• Richard Murphy• Dr. Ali Memari• Professor Robert J. Holland• John Matuszewski & Neil Atkinson
All i d t f i l th t
Structural Depth
Construction Breadth
Conclusions
Acknowledgements• All industry professionals that
provided information• All AE professors• Fellow 5th year Architectural
Engineering
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Questions