Embassy Suites Hotel Springfield, Virginia. Dominick Lovallo Structural Option AE Senior Thesis Thesis Advisor: Dr.

Transcription

1 Embassy Suites Hotel Springfield, Virginia Dominick Lovallo Structural Option AE Senior Thesis Thesis Advisor: Dr. Hanagan

2 Lobby Rendering Presentation Overview Proposed Building Presentation Overview

3 Outline Building Introduction Site Map Location: Springfield, Virginia Owner: Miller Global Properties, LLC Architect: Cooper Carry General Contractor: Balfour Beatty Construction. Number of Stories: 7, 6 Above Grade (92 feet tall,) Size: 185,000 GSF Cost: $ 31.5 Million Construction: November 2011 July 2013 Delivery Method: Design-Bid-Build

4 Outline Existing Structural System Footing Layout Foundation Foundation: Mud Mat System Spread Footings Strap Beams

5 Outline Existing Structural System Gravity / Lateral Details Foundation Gravity / Lateral Load System, Gravity System: Floor 8 Concrete Reinforced Slab 3.5 Drop Panels Columns: 14 X 30 Lateral System: Ordinary Concrete Moment Frames

6 Outline Thesis Proposal Structural Redesign Gravity Load Resisting System Lateral Load Resisting System Measure STC Class of Typical Guest Room Wall Partition Floor Assemblies Construction Breadth Construction Site Layout for Steel Erection Process Specification of Construction Equipment

7 Outline Structural Depth Solution: Gravity System: Floor System Columns Design Lateral System: Ordinary Steel Moment Frames

8 Outline Structural Depth Floor Design Floor Bay Layout Floor Systems Floor Systems Typical Bay 24 x 20 Dead & Live loads from ASCE 7-05 Floor Systems Slim Floor Composite Floor

9 Outline Structural Depth Floor Design Composite Floor Floor Systems Composite Floor Vulcraft 3 VLI toping thickness Max Constr. Span 11-9 > 8 Clr. Span OK Total Load 128psf < 251psf Max Allow. OK Beam Design W 10 X 26 Max Allow. Deflection L/360 =.66 >.12 OK Max Allow. Deflection L/ 240 = 1 >.457 OK

10 Outline Structural Depth Floor Design Composite Floor Cross Section Floor Systems Figure: Vulcraft 3VLI 20 (Photo Taken From Vulcraft Catalogue)

11 Outline Structural Depth Column Design Computer Frame Analysis Floor Systems Column Design

12 Outline Structural Depth Lateral System Ordinary Steel Moment Frames: 3 Span Frames One standard Column size Assumptions: All columns will resist lateral load Designed For Combined Gravity and Lateral Forces

13 Outline Structural Depth Frame Design 3 Bay Frame East / West Direction Frame Design Frame Design Direct Analysis Method Combined Wind and Gravity Controlling Load Combination (ASCE 7-05) Column Size W 14 x 74

14 Outline Structural Depth Frame Design Typical Frames Frame Design Wind Loading Height Increase ASCE 7 05 Wind Load Cases Controlling Wind Direction East/ West Controlling Load Case: Case 1 Base Shear = K

15 Outline Structural Depth Frame Design Typical Frames Frame Design Seismic Loading Recalculation of Building Weight Original Response Modification Factor R= 3 Ordinary Steel Moment Frames R= 3.5 Base Shear Comparison

16 Outline Structural Depth Frame Design Typical Frames Frame Design Frames East / West Direction Frames North / South Direction

17 Outline Structural Depth Drift 3 Bay Frames Drift Values Frame Design Drift Calculation Wind Limitation L/400 Seismic Limitation -.02hsx E/ W Direction N/S Direction

18 Frame Design Outline Structural Depth Drift 10 and 15 Bay Frames Drift Values

19 Outline Acoustical Breadth Transmission Loss Diagram Transmission Loss TL = 10 log (1/τ) Sound Transmission Class Single Number transmission loss value Value in decibels (db) Measured in 1/3 Octave Bands from 125 to 4000 Hz Determined by Plots

20 Outline Acoustical Breadth Transmission Loss Diagram

21 Outline Acoustical Breadth Transmission Loss Diagram

22 Outline Acoustical Breadth Transmission Loss Diagram Kinetic Soundmatt Floor Underlayment -5/16 thickness

23 Conclusion Goals Conditionally Structural Redesign is feasible Recommendations: Foundation impacts would have to be examined

24 Questions/Comments Acknowledgements: Balfour Beatty Construction Miller Global LLC Penn State AE Faculties Friends/Family

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29 Outline Structural Depth Floor Design Slim Floor Slim Floor Exceeded serviceability limitations Feasible if larger dissymmetric beam and uniform bay size

30 Wind Tables Floo r Story Wind K Pressure Direction Value- 3 Bay K Value- 10 Bay Total K Value % Load to 3 Bay Frame % Load to 8 Bay Frame Load to 3 Bay Load to 8 Bay 7th E/W th E/W th E/W th E/W rd E/W nd E/W Leve l Load to 3 Bay Lateral Wind Force E/W Direction Case 1 Load to 10 Bay Frame 5 Frame 15 Total Lateral (Kip) 7th th th th rd nd Leve l Lateral Wind Force N/S Direction Case 1 Load to 3 Bay Load to 15 Bay Frame 2 Frame 6 Total Lateral (Kip) 7th th th th rd nd Floo r Story Pressure Wind Direction K Value- 3 Bay K Value - 15 Bay Total K Value % Load to 3 Bay Frame % Load to 15 Bay Frame Load to 3 Bay Load to 15 Bay 7th N/S th N/S th N/S th N/S rd N/S nd N/S

31 Seismic Tables Slim Floor Floor Story Wind Pressur Directio e n K Value - 3 Bay K Value- 8 Bay Total K - Value % Load to 3 Bay % Load to 8 Bay Load to 3 Bay Load to 8 Bay 7th E/W th E/W th E/W th E/W rd E/W Level Load to 3 Bay Lateral Seismic Force E/W Direction Load to 10 Bay Frame 5 Frame 15 Total Lateral (Kip) 7th th th th rd Floor Story Wind Pressure Directio n K Value -3 Bay K- Value 15 Bay Total K -Value % Load % Load to 3 Bay to 15 Bay Load to 3 Bay Load to 15 Bay 7th N/S th N/S th N/S th N/S rd N/S Leve l Load to 15 Bay Lateral Seismic Force N/S Direction Load to 3 Bay Frame 2 Frame 6 Total Lateral (Kip) 7th th th th rd

32 Leve l Existing Story Height (ft.) Building Height and Floor Thickness Comparison Redesign Story Percent Floor Thickness Floor Thickness Height (ft) Increase Existing(in) Redesign(in) (%) Percent Increase (%) Total Story Height Overall Building Height(ft) (ft) Existing Redesign

33 Freq (Hz) TL (db) Contour (db) Deficiency (db) Exceeds Max Deficiency No No No No No No No No No No No No No No No No Total = 28 Freq (Hz) TL (db) Contour (db) Deficiency (db) Exceeds Max Deficiency No No No No No No No No No No No No No No No No Total = 21 Freq (Hz) TL (db) Contour (db) Deficiency (db) Exceeds Max Deficiency No No No No No No No No No No No No No No No No Total = 34