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Centre Island Bridge

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16 diapositives · 396 Views · Sep 19, 2014

ESC101- Engineering Science (Praxis I)- Team 05. Centre Island Bridge. Assessing design features, compatibility with codes and standards, and possible improvements. Emma Chan | Francis Cruz | Matt MacKay. Presentation Contents. Background (Francis) Bridge Dimensions (Francis)

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Centre Island Bridge
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  1. ESC101- Engineering Science (Praxis I)- Team 05 Centre Island Bridge Assessing design features, compatibility with codes and standards, and possible improvements Emma Chan | Francis Cruz | Matt MacKay

  2. Presentation Contents • Background (Francis) • Bridge Dimensions (Francis) • Handrails (Francis) • Ease of Crossing (Emma) • Aesthetics (Emma) • State of Repair (Matt) • Miscellaneous (Matt)

  3. Background • Location: South of Toronto Harbor, part of chain of islands called Toronto Islands • Type: Truss Arch Bridge • Purpose: Provides a path from the Toronto Island Park to Centre Island

  4. Centre Island Map http://www.gtaimages.com/media//TorontoIslandMapSmall1.gif

  5. Bridge Dimensions

  6. Handrails Designed for elegance, safety Toronto Accessibility Guidelines (1.1.5) Continuous on both sides- Yes Mounted: between 865mm and 965mm – actual: 982 mm Child could put head through gap Improvement: abandon vase shape for less attractive rectangles

  7. Improved Handrails http://www.astroeng.com/images/bridge-railing-big.jpg http://pimg.tradeindia.com/00263435/b/0/Bridge-Railing-with-Cable-System.jpg

  8. Ease of Crossing Toronto Accessibility Guidelines (1.1.8) Free of protruding objects, overhanging signs, and branches Allowable protrusion at height of 2130mm Tree overgrowing onto bridge could hurt pedestrians Improvement: Remove tree entirely or trim regularly

  9. Aesthetics Tourist destination, should be attractive Vase shaped pillars + attractive green painting Improvements: Repaint vase pillars to cover rust Remove graffiti

  10. State of Repair Bridge is designed for durability- steel painted to reduce air exposure Ontario Structure Inspection Manual (2.5): Masonry (Fair Condition) No cracks on stone walkway and protrusions Small signs of splitting Ontario Structure Inspection Manual (2.2): Concrete (Fair Condition) Hairline cracks on handrail (less than 0.1mm) Light signs of pop-outs

  11. State of Repair (continued) Ontario Structure Inspection Manual (2.3)Steel (Fair Condition) Corrosion – light severity Loose rust formation on surface No cracks and deformations Improvement: Fill in cracks and holes concrete or plaster Scrape off rust and repaint steel

  12. State of Repair Improvements Ideal Concrete Ideal Stone Masonry http://studio-tm.com/constructionblog/wp-content/uploads/2009/10/concrete-block-elevation.jpg http://www.elnia.com/images/products/wallpaper/stone_polyurethane/classic/mamposteria/large/Regular%20Stonemasonry%2013%20-%20Italian%20White.jpg

  13. Miscellaneous Electrical box located close to bridge compromises safety Improvement: change box’s location to other side of the bridge Axle load: fraction of total vehicle weight resting on a given axle 6 tonnes per axle likely to not be exceeded by a golf cart Improvement: make sign more readable to average person, add another sign to the other side of bridge

  14. WARNING! LARGE VEHICLES NOT ALLOWED ON BRIDGE Improved Sign

  15. Bibliography • Ontario. Transportation Engineering Branch. Bridge Office. Ontario Structure Inspection Manual: OSIM. By Ministry of Transportation. [St. Catharines, ON]: Ontario Ministry of Transportation, Bridge Office, 2000. Print. • Toronto. Diversity Management and Community Engagement. Strategic and Corporate Policy/ Healthy City Office / Chief Administrator’s Office Toronto: Diversity Management and Community Engagement, Strategic and Corporate Policy / Healthy City Office, Chief Administrator's Office, 2004. Web. <http://www.toronto.ca/diversity/pdf/accessibility_design_guidelines.pdf>.

  16. Questions?