the presentation
play

The Presentation Building Overview Thesis Proposal Structural - PDF document

Dec 27, 2023 •7 likes •57 views

4/16/2008 The Presentation Building Overview Thesis Proposal Structural Analysis Structural Analysis The Floor System The Lateral System Architectural Breadth CM Breadth NA NATHAN NA NATHAN AN E. AN E. E. REY

  1. 4/16/2008 The Presentation � Building Overview � Thesis Proposal � Structural Analysis � Structural Analysis � The Floor System � The Lateral System � Architectural Breadth � CM Breadth NA NATHAN NA NATHAN AN E. AN E. E. REY E. REY REYNOLDS REYNOLDS OLDS OLDS AD ADVISOR: M. ADVI VISOR: M M. KEVI M. KEV KEVIN P VIN P N PARF PARFITT RFITT � Conclusions ST STRUCTUR STRU RUCTURAL O URAL AL OPT OPTION OPTION ON THE PENNSYLVANIA THE PENNSYLVANI NIA ST NIA S STATE U STATE U E UNIVER UNIVERSIT ERSITY SITY APRI APRI RIL 1 RIL 1 L 15, L 15, , 2008 , 2008 2008 2008 ARCHITECTURAL ENG ARCHITECTURAL ENG ENGINE ENGINE NEER NEER ERING ERING G G The Building The Building � Architecture � Structure � 1970’s Era Law School � Steel Moment Frame Construction � 90,000 SF Addition � 1 Bay Clearspan � Classroom Space � Geopier Foundation Stabilization � Office Space 2 Stories � Construction � 4 Phases 5 Stories � Minimal Interruption � 2 Year Construction The Proposal The Proposal � Structural Study � Breadth Studies � Floor System Analysis � Architecture ○ Composite Steel Joists (CJ-Series) ○ Floor Plans � Lateral System Analysis y y ○ Elevations ○ Braced Frame or Shear Wall Design � Construction Management ○ Cost Estimate ○ Project Schedule 1

  2. 4/16/2008 The Structure The Structure � Floor System Considerations � Strength Analysis � Large Open Spans � Designed using SJI Standard Specs � Maintain Existing Depth (31”) � Spacing: 5’ O.C. � Strength Design � Non-Composite Dead Load: 270 PLF Non Composite Dead Load: 270 PLF � Vibration Characteristics � Vibration Characteristics � Live Load: 600 PLF � Total Load: 1150 PLF � Preliminary Design: 26CJ 1150/600/270 The Structure The Structure � Vibration Analysis � Spacing: 5’ O.C. � Damping Coefficient: 0.03 ○ First Floor Classrooms s oo C ass oo s � Natural Frequency: 3.96 Hz � Peak Acceleration: 0.0041g < 0.005g � Final Design: 26CJ 1600/775/270 ○ (46) ¾” Shear Studs ○ Larger than Required by Strength Existing Floor System Proposed Floor System The Structure The Structure � Lateral System Considerations � Classroom Layout � Drift Requirements � Member Properties Member Properties Existing Floor System Proposed Floor System 2

  3. 4/16/2008 The Structure The Structure � North-South Lateral System � North-South Braced Frame � Shear Wall � Eccentric Chevron Brace ○ Impractical Coordination of Trades ○ First Floor � Diagonal Bracing ○ Span Length Issues (55 ft) � HSS9x7x1/2” � Knee Bracing ○ Upper Floors ○ Excessive First Floor Drift � HSS8x6x1/2” � Chevron Bracing � 3 Braces Required ○ Architectural Interruption � Increased Column Size � Classroom Corridor � Eccentric Chevron Bracing ○ W14x109 ○ Minimal Complications � Drift: 0.88 inches The Structure The Structure � East-West Braced Frame � Typical Bracing Connections � Diagonal Bracing ○ HSS8x6x1/2” Typical Chevron � Typical Column Size yp Brace ○ W14x82 � Drift: 0.43 inches Typical Diagonal Brace The Structure The Architecture � Additional Structural Considerations � Revised First Floor Plan � Foundations ○ Geopier Stabilization Remains Necessary ○ Not Significantly Modified � Beams � Beams ○ W21x50 � (44) ¾” Shear Studs � Columns Maintain Existing Corridor ○ Sized for Gravity Load Only � W14x82 Revised Classroom Layout Service Area Service Area ○ Existing Design Sized for Drift � W14x159 3

  4. 4/16/2008 The Architecture The Architecture � Revised Classroom Space � South Elevation The Architecture The Construction � North Elevation � 4 Phase Construction ○ Phase I (Structure/Sitework) � 1 Year Duration ○ Minimize Impact on Classes ○ Existing Overall Project Schedule The Construction The Construction Existing System Proposed System � Total Cost: $1.44m � Total Cost: $1.31m � Time: 21 Weeks � Time: 20 Weeks � Benefits: � Benefits: � Less Members � Time � No Deck Fireproofing � Cost 4

  5. 4/16/2008 The Conclusions The Conclusions � Proposed Floor System � Recommendations � Negligible Effect on Construction Process � Implement Revised Lateral System � Proposed Lateral System ○ Structural Engineer Involved in Schematic Design Process � Beneficial to Overall Construction Process � Beneficial to Overall Construction Process � Maintain Existing Floor System � Proposed Architectural Plan ○ Less Members, Equal Cost � More Aesthetically Pleasing Façade � Utilize Revised Architectural Elevations 5

Recommend

More recommend