1. Window Guard By: Ronald, Tanya, Ashley, Saad and Tyler

2. What the Problem and Design is Intro and Background -Tyler Papaleo The design and what we looked at -Saad Saleem Steel Bars -Ronald Ong Corrosion Coupons -Tanya Mu Wrap up -Ashley Feng

3. Our Client and The Problem The Toronto Worker’s Health and Safety Legal Clinic. The Leaping Lawyer of Bay Street. Need a design that enhances safety and secures mass for curtain walls found within high rise buildings. [1] The design needs to ensure that strength and durability of the window.

4. Key Safety Factors Internal Load Corrosion Wind Load [2]

5. Key Objectives Safety Durability

6. The Design Steel Bar Corrosion Coupons

7. Guarding from Internal Loading ●Steel bars prevent unintended loadings ●Durable ●Can be implemented with minor changes to the building

8. Satisfying the Need ●Mass secured inside the building ●Safe, Durable ●Cost effective ($2-$4 per kilogram)[3]

9. Corrosion Monitoring What is it? ●A system used to monitor the amount of corrosion that occurs ●Determines rate of corrosion, which is a big factor in window strength

10. Corrosion Coupons ●Corrosion tags are thin strips of metal ●Indicator of when to change the frames ●Purchased from commercial vendors $175[4] [5]

11. The process

12. How it meets our goals? ● Meets the need to secure mass, durability and strength [6]

13. What's the Design? Again. Our final design: ● contains two parts ● Steel bars ● Corrosion monitoring ● Keeps curtain wall strong and prevents loading

14. Considerations Things need to consider: ● Environmental impact ● meets specific codes and regulations ● economic cost for this design ● corrosion coupons:$175 ● safety bars:$2-$4 per kg ● labour cost

15. Concluding Message ● Recommendation: Reduce the risk of this accident ● Take-away: Would you want to be in an unsafe building? no one would.

16. Reference: IEEE [1] Garry Hoy (2008) [Online]. Available: http://cdn- www.cracked.com/articleimages/dan/stupid_deaths/hoy.jpg [2] Alphamet. (2013). Curtain walling [Online]. Available: http://www.alphametaluminium.co.uk/curtain-walling.html http://www.alphametaluminium.co.uk/curtain-walling.html [3] Quansheng. (2014). ASTM H13 hot rolled steel round bar [Online]. Available: http://www.alibaba.com/product-detail/ASTM-H13-hot-rolled-steel-round_880951478.html?s=p http://www.alibaba.com/product-detail/ASTM-H13-hot-rolled-steel-round_880951478.html?s=p [4] Huguenot Labs. (2014). Corrosion Coupon, Galvanized Steel, ASTM Certified [Online].Available:https://www.huguenotlabs.com/shoppingcart/products/Corrosion-Coupon,- Galvanized-Steel,-ASTM-Certified.htmlhttps://www.huguenotlabs.com/shoppingcart/products/Corrosion-Coupon,- Galvanized-Steel,-ASTM-Certified.html [5] Metal Samples. (2014). Corrosion Coupons [Online]. Available: http://www.alspi.com/couponshp.htm http://www.alspi.com/couponshp.htm [6] Exponent. (2010). Corrosion of liquid and powder coated aluminium window frames and handrails [Online]. Available: http://www.exponent.com/corrosion_of_liquid_and_powder_coated_aluminum_window_frames_a nd_handrails/ http://www.exponent.com/corrosion_of_liquid_and_powder_coated_aluminum_window_frames_a nd_handrails/