Advance Design of RC Structure

1. Advance Design of RC Structure Lecture 1 Course Syllabus Warm welcome to everybody at our inspiring institute University of Palestine Advance Design of RC Structure

2. Subject Course: Advance Design of RC Structure Prerequisite: Design II Class Room: BK-202 Semester: 2nd 2009 Grads: Assignments 30% Midterm exam 30% Final exam 40% Tutor: M.Sc. Malek Abuwarda engm01@hotmail.com Advance Design of RC Structure

3. Instructional Objectives Upon completion you would be able to: • Workout the equivalent seismic load & wind load on a building • Design • Reinforced concrete shear wall, that can withstand the lateral load of the equivalent seismic load & wind load • Retaining wall • Rectangular and circular tanks • Mat foundation Advance Design of RC Structure

4. Course Outline • Seismic design • Introduction • General information • Causes of earthquake • Seismic waves • The effects of seismic on structures • Method of analysis of structures under seismic load • Equivalent static load method • Symmetrical shear wall • Unsymmetrical shear wall • Core Advance Design of RC Structure

5. Course Outline Continued . . . • Using computer program SAP2000 or ETABS to analysis the equivalent static load on tall building  if applicable • Shear wall design • Wind Load • Wind pressure • Wind load & distribution • Retaining wall • Types • Geotechnical design • Structural design Advance Design of RC Structure

6. Course Outline Continued . . . • Tanks • General information • Rectangular tank • Circular tank • Mat foundation • General information • Geotechnical design • Structural design Advance Design of RC Structure

7. Course Materials • Lecture notes • Power points slides • Handout sheets • Textbooks • Uniform Building Code UBC 1997 • International Building Code IBC 2002 • ACI-318 2005 • Reinforced Concrete Design Dr. Samir Shihada • Earthquake Engineering: Application to Design. Charles K. Erdey Advance Design of RC Structure

8. What Causes Earthquake • The Earth & its interior • Inner Core  1290 km Radius • Outer Core  2200 km thickness • The Mantle  2900 km thickness • Crust  5-40 km thickness • The circulation • Convection currents develop in the viscous Mantle, because of different pressure and temperature between the Crust & the Core • That result in circulation of the Earth’s mass. Hot Lava comes out & the cold rock mass goes into the Earth Advance Design of RC Structure

9. What Causes Earthquake Continued . . .  Plate Tectonics  Flows of Mantle material cause the crust to slide on the hot molten outer core  Sliding of earth mass takes place in pieces called Tectonic Plates Advance Design of RC Structure

10. What Causes Earthquake Continued . . .  The surface of the earth consists of seven major Tectonic Plates and many smaller ones  Plates move in different directions  Average movement of plate boundary 2-10 cm per year Advance Design of RC Structure

11. What Causes Earthquake Continued . . .  The Earthquake  Rocks are made of elastic material  Elastic strain energy is stored  Rocks reach their strength  Sudden movement takes place  Crack in the rocks formed Advance Design of RC Structure

12. What Causes Earthquake Continued . . .  Sudden slip taken place & release the enormous elastic strain energy stored  The sudden slip (EARTHQUAKE) causes a violent shaking of the earth & the released energy spreads out through SEISMIC WAVES that travel in all direction through the earth’s layers  Seismic Waves Two types of waves  Body waves  Surface waves Advance Design of RC Structure

13. What Causes Earthquake Continued . . .  Body Waves  Primary waves (P-Waves)  Extension & compression action  Speed 4.8 km/s (fastest)  Secondary waves (S-Waves)  Vertical & horizontal action  Speed 3 km/s  Surface Waves  Love waves  Horizontal component action  Rayleigh waves  Vertical component action Advance Design of RC Structure

14. What Causes Earthquake Continued . . . Seismograph Some typical recorded • Measuring instruments Advance Design of RC Structure

15. Effects of Seismic on Structures • Inertia force in structure • Seismic waves shaking the ground • Building base moves with the ground • Upper body has tendency to stay in its original position • Walls & columns drag the upper body along with them Advance Design of RC Structure

16. Effects of Seismic on Structures F a Its much like when the ground moves, the building is thrown backward or the upper body experience a force called INTERIA FORCE • Newton’s second law of motion • Upper body has a mass m • Experience an acceleration a • Then F (inertia force) = m.a  That means the more mass the greater F (inertia force) you get  so the lighter buildings sustain seismic better Advance Design of RC Structure

17. Effects of Seismic on Structures • Effect of deformations in structures • Columns undergo relative movement between their ends • Transfer the inertia force from the upper body of the building to the ground Advance Design of RC Structure

18. Effects of Seismic on Structures • Columns resist deformation so develop inertia forces, which called stiffens • Walls & columns are the most critical elements in resisting seismic Advance Design of RC Structure

19. Effects of Seismic on Structures Z Y x • Horizontal & vertical shaking • Earthquake shakes the ground in all direction • Ground shakes randomly back and forth (- & +) along in X, Y and Z direction • All structures are primarily designed to curry downward force, which called gravity load • factor of safety, used in the design of structures, magnifying the design gravity load (dead load + live load + other loads) Advance Design of RC Structure

20. Effects of Seismic on Structures • Horizontal & vertical shaking • That means most of the designed structures adequate against vertical shaking • The horizontal shaking along X & Y direction (both + & - direction of each) is our big concern as a structural designer Advance Design of RC Structure

21. Discussions Any Question? • Notes See you Wednesday All the best Advance Design of RC Structure