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Construction Session 2: Sustainable Construction Design Fundamentals

Construction Session 2: Sustainable Construction Design Fundamentals. In this session we will discuss…. Key challenges of sustainable construction The concept of the “Green Baton” The importance and value of several fundamental sustainable construction design concepts

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Construction Session 2: Sustainable Construction Design Fundamentals

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  1. Construction Session 2: Sustainable Construction Design Fundamentals

  2. In this session we will discuss… • Key challenges of sustainable construction • The concept of the “Green Baton” • The importance and value of several fundamental sustainable construction design concepts • How to use these fundamental design concepts to analyze and recommend solutions to several sustainable construction case study challenges Mod 6 Ses 2

  3. Key Challenges • Lack of understanding of ecological impact of construction activities • Lack of early rapid environmental assessment • Use of hazardous materials • Special interests who don’t prioritize sustainable construction • Disregard for the local population • Poor planning by project managers • Others? How is sustainable construction impacted by these challenges? (write 1 challenge per card) Mod 6 Ses 2

  4. Detail Design Prod’n Info Tender Action Site Options Handover And O + M Briefing Design More Sustainable Less Sustainable Affected Population Design Team Contractor Client ‘The Green Baton may be dropped at key points in the process…Once dropped, it is difficult to pick up again and regain lost ground.’Howard Liddell The “Green Baton” Concept Mod 6 Ses 2

  5. Picking Up the Baton • What experience do you have for the baton being dropped? When & How? • What might be the reasons at different stages of construction that some stakeholders may drop the green baton? • How can we pick up the baton? Or not let it fall? What actions are needed at different stages taken by different stakeholders? Mod 6 Ses 2

  6. Design Challenges & Solutions Choice of Materials “ The choice of materials can impact the host community, the environmentand future maintenance needs...” How? Mod 6 Ses 2

  7. Impacts of Material Choices Extraction, mining, harvesting Processing and production Transportation & distribution Packaging Building Disposal Environmental impact? Environmental impact? Environmental impact? Environmental impact? Environmental impact? Environmental impact? The project manager must weigh the potential impacts at each stage Mod 6 Ses 2

  8. In the workshop Materials and the Supply Chain we discussed the 3-Rs: Reduce, Reuse, Recycle Design Challenges & Solutions Use of Existing Materials With this workshop, on the topic of construction, we go deeper and discuss • Reduce • Reuse • Recycle • Refuse (to build) • Repair • Recover (energy) Mod 6 Ses 2

  9. Berge’s Cycle of Materials Metals, chemicals, cement, fired Clay , fibre, sawn timber, etc. Primary refining process Secondary refining process Structural materials, climatic materials, surface materials Ore, stone, clay, Oil, timber, plants, etc. Recycle Reuse Building process Mining, Drilling, harvesting Building Ore Oil Timber The Earth Dumping Waste Use Mod 6 Ses 2

  10. Design Challenges & SolutionsSourcing & Procurement Support legal and sustainable practices Minimize packaging in procurement of materials Purchase materials locally when practical Do no harm concept: environmental and economic impact 10 Mod 6 Ses 2

  11. Challenge vs. Solution Illegally cut lumber in Brazil Wood certified as harvested responsibly Mod 6 Ses 2

  12. Design Challenges & SolutionsEnergy & Climate Concerns Solar orientation Energy efficiency, insulation, ventilation, etc. Climate type: hot/dry, hot/humid, or cold Mod 6 Ses 2

  13. Design Challenges & Solutions Water & Wastewater • Recycling of grey water • Septic tanks • Treatment wetlands Challenge 13 Mod 6 Ses 2 Photo credit: Manoocher Deghati/IRIN

  14. One Solution: Treatment Wetland Janakaraj Murali - Constructed Wetlands in Phang Nga, Thailand Mod 6 Ses 2

  15. Design Challenges & Solutions Getting local community acceptance Community participation Knowledge sharing Analysis of existing, traditional practices Mod 6 Ses 2 Photo by David Gazashvili, CARE Int’l

  16. Design Challenges & Solutions Existing, traditional practices Traditional construction techniques Use local skills & materials; can be implemented faster, to higher standard Space use norms defined by culture & function; can dictate use of building: fully used, partially used, sold, or abandoned External space use norms should be considered (e.g. outdoor cooking in hot dry climates Religious, other beliefs can affect construction (e.g. direction a building and/or its entrances must face) Mod 6 Ses 2

  17. Design Failure vs. Success This proposed shelter is said to be earth-friendly, non-toxic and can be assembled easily and quickly in disaster area. BUT, it doesn’t meet basic human needs. School built in Maldives after tsunami http://www.iaacblog.com/AAC2007-finalists/wp-content/uploads/2008/02/42cdb3panel3_1.jpg Mod 6 Ses 2

  18. Case Study: Kenya Floods Photo credit: Richard Lough/IRIN • Key challenges confronting: • the affected? • the Government? • the international community? • Current priorities? • Solutions to minimize environmental impact and to provide for positive and sustainable reconstruction outcomes for the affected population? 18 Mod 6 Ses 2

  19. Case Study: Pakistan Earthquake • Key challenges confronting: • the affected? • the Government? • the international community? • Current priorities? • Solutions to minimize environmental impact and to provide for positive and sustainable reconstruction outcomes for the affected population? 19 Mod 6 Ses 2 Photo credit: Edward Parsons/IRIN

  20. Case Study: Sri Lanka Tsunami Photo credit: WFP/Jordan Dey • Key challenges confronting: • the affected? • the Government? • the international community? • Current priorities? • Solutions to minimize environmental impact and to provide for positive and sustainable reconstruction outcomes for the affected population? Mod 6 Ses 2

  21. Case Study: Peru Earthquake Photo credit: USGS • Key challenges confronting: • the affected? • the Government? • the international community? • Current priorities? • Solutions to minimize environmental impact and to provide for positive and sustainable reconstruction outcomes for the affected population? 21 Mod 6 Ses 2

  22. Case Study Reports • Key challenges confronting: • the affected? • the Government? • the international community? • Current priorities? • Solutions to minimize environmental impact and to provide for long-term sustainable reconstruction? Mod 6 Ses 2

  23. More about Construction after Lunch Mod 6 Ses 2

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