carbon critical design: comparison of re wall and rc viaduct on the benz circle flyover, andhra...
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![Page 1: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/1.jpg)
Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh
Adrian Anderson, General Manager Nehemiah Reinforced Soils (India) Pvt Ltd.
![Page 2: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/2.jpg)
• Introduction• The design decision• The calculation• The results• Conclusion
![Page 3: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/3.jpg)
Introduction
![Page 4: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/4.jpg)
The design decision
![Page 5: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/5.jpg)
The design decision
![Page 6: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/6.jpg)
The calculation
Reinforced Concrete Viaduct (RC) Flyover
Reinforced Soil (RS) Wall Flyover
Tonnes of Material T CO2e/T Tonnes of material T CO2e/T
M20 Mass Concrete
24 T (Footings) 0.113 73T (Footings and anchor blocks)
0.113
M35 Reinforced Concrete
1014 T (Pre stressed beams 1.25% reinforcement by volume)
0.223 82 T (Facia panels - 0.48% reinforcement by volume)
0.121
M40 Reinforced concrete
643 (pre- stressed beams and crash barrier)
0.308 24 (crash barrier) 0.308
Compacted Aggregate
381 T 0.005 15,675 T 0.005
Steel (excluding concrete reinforcement)
48 T (Post Tensioned Cables)
2.830 14 T (soil reinforcing bars within backfill)
2.68
![Page 7: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/7.jpg)
The Results
RS=0.36xRC
![Page 8: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/8.jpg)
Conclusions
Move from Cost Critical to Carbon Critical Design
Informed Design
decisions
Simple calculation to make
Some local adaption required
![Page 9: Carbon Critical Design: Comparison of RE wall and RC viaduct on the Benz Circle Flyover, Andhra Pradesh Adrian Anderson, General Manager Nehemiah Reinforced](https://reader035.vdocument.in/reader035/viewer/2022062409/56649edd5503460f94bee1e9/html5/thumbnails/9.jpg)
Thank you
Adrian Anderson, General Manager Nehemiah Reinforced Soils (India) Pvt Ltd.