1 Design of Concrete Structure I Dr. Ali Tayeh First Semester 2009 Dr. Ali Tayeh First Semester 2009.

Slides:

Advertisements

Similar presentations

COMPRESSION FIELD THEORY FOR SHEAR STRENGTH IN CONCRETE

Advertisements

Sample Problem 4.2 SOLUTION:

Composite Beams (cont’d)

An-Najah National University

Design of Concrete Structure I

Reinforced Concrete Design-8

Lecture 9 - Flexure June 20, 2003 CVEN 444.

Advanced Flexure Design COMPOSITE BEAM THEORY SLIDES

T6. DESIGN OF REINFORCED CONCRETE BEAM Reinforced concrete framed building T6. Design of reinforced concrete beam page 1. Alaprajz Floor plan Beam: linear.

Reinforced Concrete Flexural Members

Design of Concrete Structure I

4 Pure Bending.

Shear and Diagonal Tension

Lecture 15- Bar Development

1 Design and drawing of RC Structures CV61 Dr. G.S.Suresh Civil Engineering Department The National Institute of Engineering Mysore Mob:

Lecture Goals Slab design reinforcement.

Abstract This project is a structural analysis and design of a residential building located in JENIEN City, The building is consisted of 7 floors. The.

Chp-6:Lecture Goals Serviceability Deflection calculation

LRFD-Steel Design Dr. Ali Tayeh Second Semester

ONE-WAY SLAB. ONE-WAY SLAB Introduction A slab is structural element whose thickness is small compared to its own length and width. Slabs are usually.

Chp.12 Cont. – Examples to design Footings

Section 3 design of post-tensioned components for flexure Developed by the pTI EDC-130 Education Committee lead author: trey Hamilton, University of.

4 Pure Bending.

4 Pure Bending.

Stress Analysis -MDP N161 Bending of Beams Stress and Deformation

Copyright © 2011 Pearson Education South Asia Pte Ltd

Copyright Joseph Greene 2003 All Rights Reserved 1 CM 197 Mechanics of Materials Chap 15: Design of Beams for Strength Professor Joe Greene CSU, CHICO.

Lecture Goals Doubly Reinforced beams T Beams and L Beams.

Reinforced Concrete Design II

EXAMPLE 9.2 – Part IV PCI Bridge Design Manual

Chp-3-Strength Analysis of Beams According to ACI Code

10 Pure Bending.

COLUMNS. COLUMNS Introduction According to ACI Code 2.1, a structural element with a ratio of height-to least lateral dimension exceeding three used.

Composite Beams and Columns

SHEAR IN BEAMS. SHEAR IN BEAMS Introduction Loads applied to beams produce bending moments, shearing forces, as shown, and in some cases torques. Beams.

1 Design and drawing of RC Structures CV61 Dr. G.S.Suresh Civil Engineering Department The National Institute of Engineering Mysore Mob:

Lecture 21 – Splices and Shear

University of Palestine

By Dr. Attaullah Shah Swedish College of Engineering and Technology Wah Cantt. Reinforced Concrete Design-4 Design of doubly reinforced beams.

Structural Design of Movenpick Hotel

6- Calculation of shear stress at composite interface: A)Under service load: Strain and stress distributions across composite beam cross- section, under.

Design of One Way Slabs CE A433 – RC Design T. Bart Quimby, P.E., Ph.D. Spring 2007.

By Dr. Attaullah Shah Swedish College of Engineering and Technology Wah Cantt. Reinforced Concrete Design-6 Shear Design of Beams.

Advisor: Dr. Bilal El Ariss

Sample Problem 4.2 SOLUTION:

Lecture 5 - Flexure June 11, 2003 CVEN 444.

Outline: Introduction: a ) General description of project b) Materials

UNIT-IV SHEAR,TORSION AND BOND.

Behaviour of Reinforced Concrete Beams Under Bending

Principle Stresses Under a Given Loading

Slender Columns and Two-way Slabs

Structure II Course Code: ARCH 209 Dr. Aeid A. Abdulrazeg

SINGLY REINFORCED BEAM (R.C.C)

1. In many reinforced concrete structures and particularly in floor systems, a concrete slab is cast monolithically with and, connected to, rectangular.

4 Pure Bending.

SINGLY REINFORCED BEAM (R.C.C)

Structure I Course Code: ARCH 208 Dr. Aeid A. Abdulrazeg

Design of Reinforced Concrete

Sample Problem 4.2 SOLUTION:

Reinforced Concrete Design-4 Design of T beams

Reinforced Concrete Design-4 Design of T beams

Reinforced Concrete Design-6

Reinforced Concrete Design-4 Design of doubly reinforced beams

By :Dr. Aeid A. Abdulrazeg

Reinforced Concrete Design-4 Design of T beams

4 Pure Bending.

Structure II Course Code: ARCH 209 Dr. Aeid A. Abdulrazeg

Presentation transcript:

1 Design of Concrete Structure I Dr. Ali Tayeh First Semester 2009 Dr. Ali Tayeh First Semester 2009

2 Lecture 8 DESIGN OF T-Section BEAMS FOR MOMENTS

3 Analysis of Flanged Section Floor systems with slabs and beams are placed in monolithic pour. Slab acts as a top flange to the beam; T-beams, and Inverted L(Spandrel) Beams.

4 Analysis of Flanged Sections Positive and Negative Moment Regions in a T-beam

5 Analysis of Flanged Sections If the neutral axis falls within the slab depth analyze the beam as a rectangular beam, otherwise as a T-beam.

6 Analysis of Flanged Sections Effective Flange Width Portions near the webs are more highly stressed than areas away from the web.

7 Analysis of Flanged Sections Effective width (b eff ) b eff is width that is stressed uniformly to give the same compression force actually developed in compression zone of width b (actual)

8 ACI Code Provisions for Estimating b eff From ACI 318, Section T Beam Flange:

9 ACI Code Provisions for Estimating b eff From ACI 318, Section Inverted L Shape Flange

10 ACI Code Provisions for Estimating b eff From ACI 318, Section 8.10 Isolated T-Beams

11 Various Possible Geometries of T-Beams Single Tee Twin Tee Box

12 Analysis of T-Beam Case 1: Equilibrium

13 Analysis of T-Beam Case 1: Confirm

14 Analysis of T-Beam Case 1: Calculate M n

15 Analysis of T-Beam Case 2:Assume steel yields

16 Analysis of T-Beam Case 2: Equilibrium Assume steel yields The flanges are considered to be equivalent compression steel.

17 Analysis of T-Beam Case 2: Confirm

18 Analysis of T-Beam Case 2: Calculate nominal moments

19 Analysis of T-Beams The definition of M n1 and M n2 for the T-Beam are given as:

20 Limitations on Reinforcement for Flange Beams Lower Limits –Positive Reinforcement

21 Limitations on Reinforcement for Flange Beams Lower Limits –For negative reinforcement and T sections with flanges in tension

22 Example - T-Beam Find M n and M u for T-Beam. h f = 15 cm d = 40cm A s = 50cm 2 f y = 420Mpa f c = 25Mpa b w = 30cm L = 5.5m S=2.15m

23 Example of T-Beam Confirm b eff

24 Compute the equivalent c value and check the strain in the steel,  s Steel will yield in the tension zone. Assume a<t.

25 Compute the reinforcement  and check to make sure it is greater than  min Section works for minimum reinforcement.

26 Compute nominal moment components