Amber House Amber House Structural Structural 601 New Jersey 601 New Jersey Avenue Avenue Alternative Alternative Materials Materials 601 New Jersey Avenue 601 New Jersey Avenue Washington, D.C. Washington, D.C. Alternative Construction Alternative Construction Materials Materials Amber L. House Amber L. House Structural Option Structural Option
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601 New Jersey Avenue Alternative Materials Amber House Structural 601 New Jersey Avenue Washington, D.C. Alternative Construction Materials Amber L. House.
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Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
601 New Jersey Avenue601 New Jersey AvenueWashington, D.C.Washington, D.C.
Alternative Construction MaterialsAlternative Construction Materials
Amber L. HouseAmber L. HouseStructural OptionStructural Option
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Replace Existing Floor SystemReplace Existing Floor System Investigate the Impacts of this Change on other Investigate the Impacts of this Change on other
SystemsSystems Determined How this Change will influence the Determined How this Change will influence the
Cost and Construction ScheduleCost and Construction Schedule Summarize Owner’s Options.Summarize Owner’s Options.
Thesis Overview:Thesis Overview:
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Redesigned Office:Redesigned Office: Two way slabTwo way slab 10.5” depth10.5” depth 3.5” Drop panels typical3.5” Drop panels typical 5.5” Drop panels5.5” Drop panels 12” X 17.5” edge beam12” X 17.5” edge beam
Floor System Floor System (con’t)(con’t)::
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Floor System Floor System (con’t)(con’t)::
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
New Office:New Office: Two Way Slab Design Method (ADOSS)Two Way Slab Design Method (ADOSS)
Floor System Floor System (con’t)(con’t)::
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
New Office:New Office: One WayOne Way
• (1) #6 @12”(1) #6 @12”
Floor System Floor System (con’t)(con’t)::
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
New vs. Old Office Floor System:New vs. Old Office Floor System: Advantages:Advantages:
• Requires 14” less space floor to floor space.Requires 14” less space floor to floor space.• 1010thth floor can be added (28,500 sq ft.) floor can be added (28,500 sq ft.)• Low vibrationsLow vibrations• Easy to form into shapesEasy to form into shapes• Room for SprinklersRoom for Sprinklers• Common material in D.C. areaCommon material in D.C. area
Disadvantages:Disadvantages:• Columns in office spaceColumns in office space• Heavier systemHeavier system• FormworkFormwork
Floor System Floor System (con’t)(con’t)::
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Floor SystemFloor System ColumnsColumns FoundationsFoundations
Structural Depth:Structural Depth:
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Existing:Existing: Steel W shapesSteel W shapes Start at first floorStart at first floor Typically span three floorsTypically span three floors
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Impact Analysis:Impact Analysis: VehicleVehicle
• Vehicle: Large SUVVehicle: Large SUV• Weight: 5000lb Weight: 5000lb • Bumper height~ 36 inBumper height~ 36 in • Acceleration 0-60mph in 8.5 secondsAcceleration 0-60mph in 8.5 seconds
Assumptions:Assumptions:• Deceleration of vehicle in 0.5 seconds.Deceleration of vehicle in 0.5 seconds.• Central impactCentral impact• Final velocity of automobile = 0Final velocity of automobile = 0• Column velocity = 0Column velocity = 0• Speed from sloped floor ignored Speed from sloped floor ignored
Columns Columns (con’t)(con’t)::
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
• River terrace deposits consisting of clay, silt, sand and River terrace deposits consisting of clay, silt, sand and gravel underlain by residual materialsgravel underlain by residual materials
• Contains concrete, brick and other construction debris Contains concrete, brick and other construction debris • Ground water at depths ranging from 13 to 29 feet below Ground water at depths ranging from 13 to 29 feet below
the existing grade. the existing grade. • Maximum allowable soil bearing pressure of 6000 psf. Maximum allowable soil bearing pressure of 6000 psf.
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
ScheduleSchedule CostCost
Construction Management:Construction Management:
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
ScheduleSchedule CostCost
Construction Management:Construction Management:
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Existing Schedule:Existing Schedule: Design Phase: Design Phase: Start 1/14/ 2000 Start 1/14/ 2000 32.2 weeks32.2 weeks Fabrication/Delivery of Major Building materials: Start Fabrication/Delivery of Major Building materials: Start
Schedule of Redesigned Structure:Schedule of Redesigned Structure: 12 weeks to pour 10 floors12 weeks to pour 10 floors 4 weeks for fabrication of rebar4 weeks for fabrication of rebar Fast track ConstructionFast track Construction Spray on fireproofing eliminatedSpray on fireproofing eliminated
Schedule:Schedule:
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
ScheduleSchedule CostCost
Construction Management:Construction Management:
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Existing Structure:Existing Structure: Actual: $24,330,000.0Actual: $24,330,000.000 Includes garage and officeIncludes garage and office
R.S. Means Square Foot Cost:R.S. Means Square Foot Cost:
Cost:Cost:
Cost/ SF Square Feet Total Cost
SUB GRADE GARAGE 48.9 90000 $4,401,000.00
NEW CONSRUCTION 83.89 258000 $24,034,485.00
EXISTING CONSTUCTION 83.58 286500 $21,563,640.00
SQUARE FOOT COST ESTIMATE
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
R.S. Means Assemblies Estimate:R.S. Means Assemblies Estimate: Structural system onlyStructural system only
Cost Cost (con’t)(con’t)::
Description Cost/ SF
NEW CONSTRUCTION
Two-Way Concrete Slab and Reinforced Concrete Columns
$13.98
EXISTING CONSTUCTION
Steel Composite Beams and Steel Columns
$14.79
ASSEMBLIES ESTIMATE
STRUCTURAL MEMBER COST/ SF
Concrete Column $2.08Two-Way Concrete Slab $11.90
Steel Column $0.14
Compite Beam and Deck $14.65
ASSEMBLIES ESTIMATE
EXISTING CONSTUCTION
NEW CONSTRUCTION
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Internal Rate of Return:Internal Rate of Return: Initial CostsInitial Costs
Building MaintenanceBuilding Maintenance• $14.00/square foot a year$14.00/square foot a year
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Redesigned Floor System Key:Redesigned Floor System Key: Advantages:Advantages:
• 1010thth floor (28,500 sq ft.) floor (28,500 sq ft.)• Comparable scheduleComparable schedule• Common material in D.C. & Competitive ContractorsCommon material in D.C. & Competitive Contractors• More flexible for different tenant space requirementsMore flexible for different tenant space requirements
Disadvantages:Disadvantages:• Columns in office spaceColumns in office space• Possible lower rental value Possible lower rental value • Higher initial costHigher initial cost• Loss of parking spacesLoss of parking spaces
Conclusions:Conclusions:
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Michael WeissMichael Weiss Structural Design GroupStructural Design Group Ron SchneckRon Schneck Hickok Warner FoxHickok Warner Fox Tom BickleyTom Bickley Girard EngineeringGirard Engineering Jim AlexanderJim Alexander The Albemarle Group, LLCThe Albemarle Group, LLC Julie KirkwoodJulie Kirkwood James G. Davis ConstructionJames G. Davis Construction Dr. HanaganDr. Hanagan Penn State Penn State
UniversityUniversity AE FacultyAE Faculty
Acknowledgements:Acknowledgements:
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
Questions?Questions?
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
New Office:New Office: Two Way Slab Design Method (ADOSS)Two Way Slab Design Method (ADOSS)
• Typical Assumptions:Typical Assumptions: Outside edge was straightOutside edge was straight Ignore elevator Edge beamsIgnore elevator Edge beams Case 1 CantileverCase 1 Cantilever Case 2 RemovedCase 2 Removed
Floor System Floor System (con’t)(con’t)::
Amber HouseAmber HouseStructuralStructural
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
New Office:New Office: Two Way Slab Design Results (ADOSS)Two Way Slab Design Results (ADOSS)
601 New Jersey Avenue601 New Jersey AvenueAlternative MaterialsAlternative Materials
New vs. Old Office Floor SystemNew vs. Old Office Floor System : : Advantages:Advantages:
• Higher long run profitsHigher long run profits• Competitive concrete contractorsCompetitive concrete contractors• Common Construction methodCommon Construction method• Economies of scaleEconomies of scale
Disadvantages:Disadvantages:• Higher initial costHigher initial cost• More interest on loanMore interest on loan• Higher cost for building managementHigher cost for building management• Possible lower rental valuePossible lower rental value