1 / 63

Effect of varying the concrete design standards on the buildings Safety and construction cost in the UAE

CIVL 590. UAE University Faculty of Engineering Civil & Environmental Dept. Graduation Project II. Effect of varying the concrete design standards on the buildings Safety and construction cost in the UAE. Advisor :- Dr. Tamer El-Maaddawy. Done By. Fall 2008. GP II. CIVL 590. Outline.

Jimmy
Download Presentation

Effect of varying the concrete design standards on the buildings Safety and construction cost in the UAE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CIVL 590 UAE University Faculty of Engineering Civil & Environmental Dept. Graduation Project II Effect of varying the concrete design standards on the buildings Safety and construction cost in the UAE Advisor:- Dr. Tamer El-Maaddawy Done By Fall 2008

  2. GP II CIVL 590 Outline • Introduction • Objectives • Background Theory • Slab Design • Columns Design • Area of steel • Comparisons • Conclusion

  3. GP II CIVL 590 Introduction RC is the most common material currently used in the construction buildings and infrastructures in the UAE

  4. GP II CIVL 590 Introduction Because the UAE is a young country, every consultant uses different standard codes in designing different projects ACI 318-08 CSA-A23.3 BS-8110 BS British Standard ACI American Concrete Institute CSA Canadian Standard Association

  5. GP II CIVL 590 Objectives Perform a comparative analysis between the international code requirements used in design and analysis of concrete buildings in the UAE Design selected elements of an existing building

  6. GP II CIVL 590 Introduction ACI 318-08 CSA-A23.3 BS-8110 Slab design Columns design Area of steel Conservative Economical

  7. GP II CIVL 590 Introduction Building description Ground 2P (Parking) +15 “floors” The existing building

  8. GP II CIVL 590 Introduction Used of building Residential Commercial

  9. Introduction Slab design Design Flat Slab Hand Calculations (Dead & Live) Load Using Safe 8 Software To Analyze The Slab Area Of Steel Columns design Determine Tributary Area Hand Calculations (Dead & Live) Load Calculate Ultimate Load On Columns Area Of Steel

  10. GP II CIVL 590 Flat slab A concrete slab which is reinforced in two or more directions, usually without beams or girders to transfer the loads to supporting members Flat slabs design is appropriate for most floor situations and is also suitable for irregular column layouts, curved floor shapes, ramps etc.

  11. GP II CIVL 590 Flat slab Flat slabs may have drop panels at columns

  12. GP II CIVL 590 Why Flat is commonly used? • Minimum depth • Speed up the construction • Flexibility in the plan layout (both in terms of the shape and column Layout) • Clean finishes and freedom of layout of services • The flexibility of flat slab construction can lead to high economy and yet allow the architect great freedom of form

  13. GP II CIVL 590 Flat slab

  14. GP II CIVL 590 About Safe 8 Safe 8 is a special purpose program that automates the analysis and design of simple to complex concrete flat plates and foundation systems using powerful object based modeling. The program can analyze and design slabs or mats of arbitrary shapes and varying thickness, drop panels The software produces reinforcing layouts and evaluates the effects of punching shear around column supports.

  15. GP II CIVL 590 Load Combination [review]

  16. GP II CIVL 590 Material Factors [review] • CSA-A23.3 is more conservative in both Materials factors compared with BS-8110. • ACI-318-08 does not have material factors

  17. Strength Reduction Factors Ø[review]

  18. GP II CIVL 590 Slab Design

  19. GP II CIVL 590 Slab Design • AutoCAD Drawing The slab of the building

  20. GP II CIVL 590 Load Calculations • Dead load Calculated directly by Safe 8 software, where is thickness of slab and is specific density of concrete. F.C = Flooring cover. = Own weight of wall

  21. GP II CIVL 590 Load Calculations

  22. GP II CIVL 590 Load Calculations To determine the load per meter square we divide the own weight of wall on the area of typical floor = Own weight of wall = 0.2 m x 642.025 m x 0.31 m x 0.2 m = 844.28 KN To determine the load per meter square we divide the own weight of wall on the area of typical floor; where are of typical floor = 1375.2859 Dead load coming from walls =

  23. GP II CIVL 590 Load Calculations • Live load We consider live load = 3 The live load value is taken from the minimum design load of ASCE7-05 and it is suitable for the activity that will take place in the building “offices and residential

  24. GP II CIVL 590 Slab analysis using safe 8 Enter calculated load (Dead & Load) Strips force in X-X direction

  25. GP II CIVL 590 Slab analysis using safe 8 Strips force in Y-Y direction The ultimate moments for selected two strips in “x” and “y” directions will be tabulated

  26. GP II CIVL 590 Slab Design • Get the area of steel of slab in each 1 m

  27. GP II CIVL 590 Minimum concrete cover in slab BS-8110 BS-8110

  28. GP II CIVL 590 Minimum concrete cover in slab ACI-318 CSA

  29. GP II CIVL 590 Slab Design Point 1& 2 are real moments that we are focus on where the maximum point of moment will be resisted by the column depth.

  30. GP II CIVL 590 Column Design

  31. GP II CIVL 590 Columns Design Layout of Columns

  32. GP II CIVL 590 Load Calculations 1) Tributary area 2) Ultimate Load (Pu) The dead load include the load that coming from slab 3) Are of steel (As)

  33. GP II CIVL 590 Load Calculations Dead Loads on Columns

  34. GP II CIVL 590 Load Calculations

  35. GP II CIVL 590 Load Calculations

  36. GP II CIVL 590 Load Calculations Live Loads on Columns

  37. GP II CIVL 590 Load Calculations

  38. GP II CIVL 590 Load Calculations

  39. GP II CIVL 590 Load Calculations

  40. GP II CIVL 590 Load Calculations

  41. GP II CIVL 590 Dead & Live Load Results

  42. GP II CIVL 590 Analysis

  43. GP II CIVL 590 Analysis

  44. GP II CIVL 590 Area of steel in slab Area of steel for strips in X direction

  45. GP II CIVL 590 Area of steel in slab Area of steel for strips in Y direction

  46. GP II CIVL 590 Spreadsheets for flexure design BS-8110

  47. GP II CIVL 590 Spreadsheets for flexure design ACI-318-08

  48. GP II CIVL 590 Spreadsheets for flexure design CSA-A23.3

  49. GP II CIVL 590 Effect of varying design standard on amount of steel in slab (Area of steel in X-direction: strip 1-1)

  50. GP II CIVL 590 Effect of varying design standard on amount of steel in slab (Area of steel in X-direction: strip 2-2)

More Related