Caitlin Ferrell Structural Option Senior Thesis Presentation - - PowerPoint PPT Presentation

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Caitlin Ferrell Structural Option Senior Thesis Presentation - - PowerPoint PPT Presentation

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The Erie Convention Center and Sheraton Hotel Erie, Pennsylvania Caitlin Ferrell Structural Option Senior Thesis Presentation Spring 2006 Architectural Engineering The Pennsylvania State University Presentation

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SLIDE 1

Caitlin Ferrell

Structural Option Senior Thesis Presentation Spring 2006

The Erie Convention Center and Sheraton Hotel Erie, Pennsylvania

Architectural Engineering The Pennsylvania State University

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SLIDE 2

Presentation Overview

  • Project Background
  • Depth Study:

– Two alternative floor systems – Staggered truss system design

  • Breadth Study

– Mechanical – Acoustics

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SLIDE 3

Project Background

Building Statistics

  • Size-

– 11 stories – 132,000 sq.ft. – 200 guestrooms

  • Part of the Bayfront

Convention Center Complex

  • $62 million + local business contributions
  • Expected completion date: Summer 2007
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SLIDE 4

Project Background

The Site

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SLIDE 5

Project Background

Existing Structure

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SLIDE 6

Project Background

Existing Structure

Bracing allows for ribbon windows

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SLIDE 7

Presentation Overview

  • Project Background
  • Depth Study

– Two alternative floor systems – Staggered truss system design

  • Breadth Study

– Mechanical – Acoustics

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SLIDE 8

Depth Study

Proposal

  • Need for open floor plans on lower levels
  • Quick and inexpensive construction
  • Lateral resistance to wind in N/S direction
  • Hotel provides a regular pattern with a

single corridor on the upper floors

Staggered Truss System

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SLIDE 9

Depth Study

Alternate Floor Systems

Precast Plank

8” hollow-core precast plank with 2” topping

vs.

Steel Joist with Deck and Slab

22K7 (lower floors), 18K4 (upper floors) 22 Ga. 1.5” Composite Deck w/ 4” NW slab

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SLIDE 10

Depth Study

Staggered Truss System

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SLIDE 11

Depth Study

Staggered Truss System

Only 2 Column Lines

A- Odd Floors B- Even Floors

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SLIDE 12

Depth Study

Staggered Truss System

Vierendeel panel allows for corridor

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SLIDE 13

Depth Study

Staggered Truss System

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SLIDE 14

Depth Study

Staggered Truss System

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SLIDE 15

Depth Study

Staggered Truss System

W12×96 W10×33 HSS10×6×5/16 HSS10×6×5/16 W14’s

Spandrel Beams: Joist System-W18×50 Plank System- W21×55

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SLIDE 16

Depth Study

Staggered Truss System

Building Drift (N/S Direction)

  • Precast Plank System- 2.8”
  • Joist System – 1.68”

Allowable Drift

  • H/400
  • 3.96”

Controlling Load Combinations

  • N/S: 1.2D+1.6W+1.0L+0.5R
  • E/W: 1.2D+1.0E+1.0L+0.2S
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SLIDE 17

Depth Study

Alternate Floor Systems

Precast Plank

Slightly Larger Members

vs.

Steel Joist with Deck and Slab

Adds 1’ to each floor11’ total

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SLIDE 18

Depth Study

Staggered Truss System

Additional Factors:

  • Erection and Coordination of Trades
  • Foundations
  • Fire Resistance
  • Architecture
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SLIDE 19

Depth Study

Structural Costs

Existing System Installed Cost per Ton of Steel

$1,105,289.51 $112,077.88 $2,200.00 50.94449 101888.98 Cross-Bracing $481,446.34 $2,000.00 240.7232 481446.34 Beams $511,765.29 $2,000.00 255.8826 511765.29 Columns total cost pricing tons weight (lbs)

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SLIDE 20

Depth Study

Structural Costs

$1,015,323.08 $52,163.27 $2,200.00 23.71 47421.16 Truss Elevation H $53,000.13 $2,200.00 24.09 48181.93 Truss Elevation G $53,965.07 $2,200.00 24.53 49059.16 Truss Elevation F $52,623.93 $2,200.00 23.92 47839.93 Truss Elevation E $54,367.89 $2,200.00 24.71 49425.36 Truss Elevation D $53,000.13 $2,200.00 24.09 48181.93 Truss Elevation C $55,525.80 $2,200.00 25.24 50478.00 Truss Elevation B $52,623.93 $2,200.00 23.92 47839.93 Truss Elevation A $142,171.76 $2,000.00 71.09 142171.76

  • Col. Line 2

$142,171.76 $2,000.00 71.09 142171.76

  • Col. Line 1

$303,709.43 $2,500.00 121.48 242967.54 Transverse Beams total cost pricing tons weight (lbs)

Staggered Truss w/ Plank Installed Cost per Ton of Steel

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SLIDE 21

Depth Study

Structural Conclusions

Prefabricated Trusses More Members to Erect Schedule

$1,015,323.08 $1,105,289.51

Cost Staggered Truss Existing

Savings of: $89,966.43 Shorter field erection time

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SLIDE 22

Presentation Overview

  • Project Background
  • Depth Study

– Two alternative floor systems – Staggered truss system design

  • Breadth Study

– Mechanical – Acoustics

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SLIDE 23

Breadth Study-Mechanical

Open-Loop Geothermal Heat Pump

Existing System: air to air through the wall units Proposed System: air to water system

  • Higher COP (Coefficient of Performance)
  • Saves 6.58 x 105 kWh in heating per year
  • Saves 7.52 x 105 kWh in cooling per year
  • Cost of electricity in PA at $0.0873/kWh
  • Additional energy needed to pump water from lake

$119,752.85 saved per year

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SLIDE 24

Breadth Study

Open-Loop Geothermal Heat Pump

Initial Costs:

  • Drilling, pipe, pumps, strainer, labor
  • $27,608.82

3 month payback period

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SLIDE 25

Breadth Study-Acoustics

Sound Transmission Through Guestroom Walls

Wall Construction: 2 layers 5/8” gypsum board, 3-5/8” metal studs, 3” fiberglass insulation

62 56 60 59 52 38 57 4000 2000 1000 500 250 125 STC

Sound Transmission Loss (TL) through wall

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SLIDE 26

Breadth Study-Acoustics

Sound Transmission Through Guestroom Walls

Wall Construction: 2 layers 5/8” gypsum board, 3-5/8” metal studs, 3” fiberglass insulation

63 57 61 59 50 36 4000 2000 1000 500 250 125

Noise Reduction (NR) Between Rooms (dB)

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SLIDE 27

Breadth Study-Acoustics

Sound Transmission Through Guestroom Walls

  • 22
  • 11
  • 12
  • 1

5 14 Raised Voice

  • 16
  • 7
  • 3

4 9 17 Normal Voice 4000 2000 1000 500 250 125

Lp (Receiving Room)

39 53 48 51 60 59 4000 2000 1000 500 250 125

Window AC Unit Sound Pressure - 5dB

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SLIDE 28

Thank You Questions?