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Project 2- Steel Gas Station

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Project 2- Steel Gas Station

  1. 1. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Gas Station Design By: Dinesha Kuruppuarachchi, Suganya Soundararajan, Fatima usmona May 2015
  2. 2. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor • Located in Shreveport, LA, off I-49 • According to Shreveport Zoning: – Highway Business District • Design for three structures: – Store – Canopy – Sign Board
  3. 3. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Site visit investigation…
  4. 4. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Store • Area 1600 ft2 square shape 40x40ft • Height 15ft • Fire Resistance rating: – Construction TYPE II-B, Unprotected Non-Combustible • International Building Code: – Mercantile Group M
  5. 5. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Roof Design - Flat Roof The structural steel framing with a steel decking and joist system. – Weather conditions – Ease of fabrication – Less cost
  6. 6. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Canopy • Area 2800 ft2, rectangular shape 40X70 ft • Roof Height 20ft • Columns: – Six square shape columns Sign Board • 22 ft height • 10X12 ft • 10 ft long columns
  7. 7. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Reference Books
  8. 8. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Additional Reference
  9. 9. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Realistic constraints include economic, environmental, social, political, ethical, health and safety, manufacturability, and sustainability considerations. • Environmental – Snow – Earthquake – Wind Realistic Constrains
  10. 10. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Design Procedure
  11. 11. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Loads
  12. 12. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Total load = 20 psf Dead Load
  13. 13. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor L = Lo * R1* R2 Roof Live Load 20 psf
  14. 14. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Wind Load
  15. 15. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Calculate wind Load (MWFRS) Velocity Pressure (qz) -Topo-graphic factor -Velocity pressure exposure coefficient -Wind directional factor Gust Factor (G)=0.85 Exposure category B Kzt =1 Kd = 0.85 V=120 mph Kz = 0.57
  16. 16. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Calculate wind load store
  17. 17. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Calculate wind load for canopy
  18. 18. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Calculate wind load for signboard
  19. 19. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Summary of loads Store Canopy Sign board Lateral Lateral Lateral
  20. 20. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Calculate loads on each member (Using Tributary Areas)  Calculate tributary area for each member  Calculate loads on members  Use service and strength load combinations to get envelopes Service Load Combinations Ultimate Load Combinations
  21. 21. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Structural Analysis (Risa)
  22. 22. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Statically indeterminate structures Lateral wind load • 5 frames Analyze in Risa
  23. 23. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Frame for the store in Risa
  24. 24. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Frames for the canopy in Risa
  25. 25. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Frame for the signboard in Risa
  26. 26. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Analyze in Risa Store
  27. 27. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Analyze in Risa Canopy
  28. 28. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Member Design
  29. 29. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Selecting members
  30. 30. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Selecting girders Moment Shear Deflection Drift
  31. 31. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Selecting joists
  32. 32. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Selecting columns • Checks – Slenderness ratio – Buckling load and stress – Bending strength – Nominal compressive strength – Width-thickness ratio – axial compressive load Reasons to select HSS columns: Equal moment capacity in both directions Greater strength to weight ratio Easy for connections
  33. 33. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Summary of members
  34. 34. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Footing Design
  35. 35. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Base plate Anchor rods Footing analysis
  36. 36. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Base Plates Reasons to use base plates: • Spreads the axial load • Avoids crushing the concrete pier ASTM A36 base plate
  37. 37. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Anchor rods • Resist shear and tension forces • ASTM A 563 heavy double nut • 9 inch embedment • Headed anchor roads
  38. 38. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Connection Design
  39. 39. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Connections Bolted connections Advantages: Less time Easy to inspect Does not require special skills
  40. 40. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Shear connections Checks •Bearing strength in bolts •Shear strength ASTM A 325 bolts ¾ diameter bolt
  41. 41. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Moment Connections Moment Connections for the canopy Moment Connections for the Store
  42. 42. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Welding ¼ fillet welded all around
  43. 43. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Connections drawings
  44. 44. Louisiana Tech University College of Engineering & Science Transportation Design Water Resources Gas StationBridge Corridor Summary

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