Northern Arizona University By: Jeremy DeGeyter Kristin Van Sciver - - PowerPoint PPT Presentation

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Northern Arizona University By: Jeremy DeGeyter Kristin Van Sciver - - PowerPoint PPT Presentation

Northern Arizona University By: Jeremy DeGeyter Kristin Van Sciver Matt Snyder F ear Nothing Motto h a Goal: Improve across the board Paddling o Fundraising o Concrete Mixture o Post-Tensioning Application o Aesthetics o


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SLIDE 1

Northern Arizona University

By: Jeremy DeGeyter Kristin Van Sciver Matt Snyder

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SLIDE 2

“Fear Nothing” Motto

a h

Figure 1: 2015 Canoe Team Figure 2: Practice Races Figure 3: Paddle Practice

a h

  • Goal: Improve across the board
  • Paddling
  • Fundraising
  • Concrete Mixture
  • Post-Tensioning Application
  • Aesthetics
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SLIDE 3

Hull Design

u a h

u

Figure 4: Prolines Hull Model

  • Shallow Arch Bottom
  • 5-in rocker
  • 21-ft long, 27-in wide
  • Prolines
  • Optimum Speed 5.4 knots (6.2mph)
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SLIDE 4

Structural Analysis

  • Max moment of 4-lbin/in
  • Two person loading analysis
  • Transverse direction
  • Capacity of 30-lbin/in
  • Based on one layer reinforcement
  • Does not include ribs

t u a h

t

Figure 5: Transverse Free-Body Diagram

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SLIDE 5

Concrete Mix

  • Final Consituents:
  • EkkoMAXX
  • Poraver (0.5mm-1mm)
  • 3M Glass Bubbles (S32)
  • MasterFiber M 100
  • MB-AE 90 Air Entraining Admixture
  • What is EkkoMAXX?
  • Sustainable alternative to Portland
  • 100% fly ash based
  • Resistant to chemical attack
  • Reduced shrinkage
  • First time used for concrete canoes

Final nal Concr ncrete te Struct uctural ral Mix: x: Wet/Dr t/Dry Uni nit t Weight 65.5/57.4 pcf 28 Da Day Compre ressive ive Stre reng ngth th 2150 psi 28 Da Day Tens nsile le Stre reng ngth th 225 psi 28 Da Day Fle lexural ural Stre reng ngth th 725 psi

r t u a h

Figure 6: Concrete Mix Table 1: Final Mix Properties

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SLIDE 6

Mold Construction

d u r t u a h

Figure 7: Cross-Section Cutout Figure 8: Hot-Wire Cutting Foam Figure 9: Gluing Cross-Sections Figure 10: Finished Foam Mold

u d

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SLIDE 7

Pour Day

D d u r t u a h

Figure 11: Spraying Concrete Layers Figure 12: Troweling Concrete Layers Figure 14: Placing Reinforcement Mesh Figure 13: Placing Post-Tensioning

D

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SLIDE 8
  • g

D d u r t u a h

Post-Tensioning

  • Provides 690-lbs of axial compression

to increase flexural cracking load

  • Six-7x7 galvanized steel tendons were

placed symmetrically about the centroid

  • Designed for 115-lbs of tension after

calculated losses

Figure 16: Anchorage System Figure 17: Post-Tensioning Net Figure 15: Tensioning System

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SLIDE 9

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Curing and Finishing

Figure 18: Curing Frame Figure 19: Curing Tent Figure 20: Sanding

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Figure 21: Staining

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SLIDE 10

Aesthetics

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Figure 23: Rib in Canoe Figure 24: 3D Elements in Bulkhead Figure 22: Silicone Rib Mold Figure 25: Arizona Flag Stain Figure 26: Flagstaff Night SkyStain

no g D d u r t u a h

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SLIDE 11

Presenting…

Dreadnoughtus

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adnoughtus Dr Dreadnoughtus e

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SLIDE 12

Dreadnoughtus

Questions?