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Structural Analysis and Design of a Composite Steel/RC Multi-Storey Building United Arab Emirates University College of Engineering Department of Civil.

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Presentation on theme: "Structural Analysis and Design of a Composite Steel/RC Multi-Storey Building United Arab Emirates University College of Engineering Department of Civil."— Presentation transcript:

1 Structural Analysis and Design of a Composite Steel/RC Multi-Storey Building United Arab Emirates University College of Engineering Department of Civil and Environmental Engineering Graduation Project Fall 2008 Student NameID Number Saqer Ahmed Masood Al Braiki Mohammed Monir Makin Ajan Alhadid Hasan Amer Hasan Al Timimi Sultan Omair Ali Al Sheryani Examination Committee Dr. Mawahib Sulieman Dr. Ahmad Bushlaibi Dr. Khaled El-Sawy Examination Committee Dr. Mawahib Sulieman Dr. Ahmad Bushlaibi Dr. Khaled El-Sawy 1

2 Design Shear wall Design of Beams Slab Design Design of Columns 2 Connection Project Description

3 Building Side (C) Building Side (CC) Core 3

4 (CC) Side: Consist of 28 Floors. Arch Concaving in Other Direction. Floor Height: 3.6 m. Dimensions: ( 31 m x 10 m). Number of Apartments: 2 (CC) Side: Consist of 28 Floors. Arch Concaving in Other Direction. Floor Height: 3.6 m. Dimensions: ( 31 m x 10 m). Number of Apartments: 2 (C) Side: Consist of 30 Floors. Arch Concaving in One Direction. Floor Height: 3.6 m. Dimensions:( 34 m x 10 m). Number of Apartments: 3 (C) Side: Consist of 30 Floors. Arch Concaving in One Direction. Floor Height: 3.6 m. Dimensions:( 34 m x 10 m). Number of Apartments: 3 4

5 Core: Contains the Elevators, Staircases, Shear walls and Ducts. Not Concaved. Dimensions: ( 18 m x 6 m). Core: Contains the Elevators, Staircases, Shear walls and Ducts. Not Concaved. Dimensions: ( 18 m x 6 m). 5

6 6

7 Design Shear wall Design of Beams Slab Design Design of Columns 7 Connection Project Description

8 8 Slab and Staircase Design Flat Slab Concept Design procedure Staircase

9 9 Flat Slab: Flat slab is a slab directly supported on columns Advantages: No interior beams. Thickness: 30 cm. Slab to be designed at floor 15

10 10 Design flat slab Hand calculation Sap2000 Software Calculating minimum steel percentage Find the value of (R n ) Find the nominal moment Calculating minimum steel percentage Find the value of (R n ) Find the nominal moment Equations

11 11 Determine the ultimate shear acting on the slab. (V u ) Determine the column resistance (V c ) Determine the ultimate shear acting on the slab. (V u ) Determine the column resistance (V c ) The outer perimeter from column face

12 12 Design flat slab Hand calculationSap2000 Software Y-direction (bottom) M u (kN-m)400 RnRn max min A s (mm 2 ) 3921 Extra RC.5 32 Put the nominal moment in the software as the main mesh Put extra reinforcement on the areas which exceeds the nominal moment value Put the nominal moment in the software as the main mesh Put extra reinforcement on the areas which exceeds the nominal moment value

13 13 Bottom DetailingTop Detailing

14 14 Going (G): The horizontal distance of the upper surface of a step. Rise (R): The vertical distance between horizontal of two consecutive steps. Waist (h): the least thickness of the stairs slab. Landing: the horizontal platform which is usually provided at the beginning and the end of series of steps. Flight: comprised of a number of steps provided between two consecutive landings

15 Find the depth of steel reinforcement (d) Find the steel percentage ( Check Find A s, A s (min) and spacing Check shear 15

16 Design Shear wall Design of Beams Slab Design Design of Columns 16 Connection Project Description

17 17 Design Shear wall Shear wall Concept Design procedure Result

18 18 Shear wall refers to a structural element that is used to resist lateral wind and earthquake loads. For tall buildings it is essential to provide adequate stiffness to resist the lateral loads caused by wind and earthquake.

19 19 Determine the minimum thickness (t w ) Determine the maximum spacing between the vertical and horizontal reinforcement, (S1,S2)

20 20 Design Stage Determine the axial load capacity Determine the shear strength Determine the moment strength

21 21 Determine the axial load capacity (P nw )

22 22 Area of the horizontal shear reinforcement Spacing between horizontal shear reinforcement Determine the shear strength (V nw )

23 23 Yield strength length of the wall Ultimate axial load on the wall Total vertical steel reinforcement length of the wall Ultimate axial load on the wall Determine the moment strength(M nw )

24 24


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