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KING FAHD UNIVERSITY CIVIL ENGINEERING DEPARTMENT A New Prefab Panel As a flooring slab Web Grid Core Panel ABDUL FATTAH DARWISH. Subjects. The Problem ? Panel Description Structural Study Economical Study Comparison conclusion. Problems ?. High Dead Loads in buildings ?

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  1. KING FAHD UNIVERSITYCIVIL ENGINEERING DEPARTMENTA New Prefab Panel As a flooring slabWeb Grid Core PanelABDUL FATTAH DARWISH

  2. Subjects • The Problem ? • Panel Description • Structural Study • Economical Study • Comparison • conclusion

  3. Problems ? • High Dead Loads in buildings ? • D/L ≥ 2 In ordinary buildings • D/L = 1 In Hollow Core Slab ? • Construction Cost & Time • Slab Cost @70% of Skelton • Slab Time @ 75% of Skelton Time • Earthquake Disasters • Mass & Height • Environmental Impacts of Concrete • Roads & Crushing Plants Problems • Energy Loss • Crushing Plants,Transportation & Construction

  4. Panel Description Components • Web Grid Core • Cladding Plats • Filling Material • Connecting Devices

  5. Panel Description Strength Points • Very Light : 10% of concrete Weight • Very strong : 50 cm for 20x20 m • Could be one or two way slab action • Reduce @ 50% of Building Weight • Reduce @20% of skeleton cost • Reduce construction time • Reusable,Removable and adjustable • Easy to transport & install

  6. Panel Description Improving points • Water Proofing • Fire & Heat Resistance • Electric Conductivity • Sound Resistance • Connecting Devices

  7. Structural Study Data • Dimensions are: 6 x 6 x 0.20 meter • Pinned supports all around • All elements are 1.5 mm thick. • Total load is 300 kg/m2 Results • Max. stress is 0.15 t/cm2 • Max Deflection 1.0 mm

  8. Stress isometric

  9. Top Plate Stress 0.15 t/cm2

  10. Bottom Plate Stress 0.13 t/cm2

  11. Deflection is 1mm Central Rib Stress 0.13 t/cm2

  12. Economical study Data: • 10 floors building • Floor area 12X12 m • Current prices for ribbed slab Result: • 20 % Reduction in skeleton cost if we use the new panel

  13. Comparison against: • Solid Slab • Ribbed Slab • Hollow Core Slab • Siporex

  14. Deflection

  15. Density (t/m3)

  16. Cost (SR/m3)

  17. Installing Time (day)

  18. ManufacturingTime (weeks)

  19. Achievements • Load Reduction (> 50%) • Cost Reduction (>20%) • Saving Victims in earthquakes • Environmental Benefits • Energy Savings

  20. Conclusion • It has strength points • It has improving points • A Feasibility study should be done to ensure : • Performance • Manufacturing • Use & Cost

  21. Questions

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