Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth...

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Kurt Krasavage Structural Option Chevy Chase, Maryland

Transcript of Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth...

Page 1: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

Kurt Krasavage Structural OptionChevy Chase, Maryland

Page 2: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 3: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 4: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

Building OverviewBuilding Overview

Thesis Objective

Architectural Breadth FeaturesStructural Depth

Construction Breadth

Conclusions

Acknowledgements

LocationProject TeamStructural System

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Questions

Page 5: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 6: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 7: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 8: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 9: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 10: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 11: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 12: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 13: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 14: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 15: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 16: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 17: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 18: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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.

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QuestionsEnlarged View of Typical Apartments

Page 19: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 20: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 21: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 22: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 23: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 24: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 25: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 26: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 27: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 28: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 29: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 30: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 31: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 32: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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

Page 33: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 34: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 35: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 36: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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Page 37: Presentation Outline...Building Overview 3- Bedroom2- Bedroom 2- Bedroom Architectural Breadth Thesis Objective Architectural Breadth Proposed Layout Building Dimensions 1400 S.F 1062

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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