RCC & Prestressed Concrete

1.Introduction Concrete Modulus Elacticity of concrete Tensile Strength of concrete in flexure 2.Working Stress method Modulus Ratio Eqivalent Area Concrete Stress in Concrete Critical Depth of Neutral Axis Single Reinforced Rectangular section Actual Depth of Neutral Axis Moment of resistence For balance Section For Under Reinforced Section Doubly Reinforced Rectangular Section Critical depth of Neutral Axis Actual Depth of Neutral Axis Moment of resistence Design step Special case Balanced Section Underreinforced Section Overreinforced section Singly reinforced T-section Effective width of flange Critical depth of Neutral Axis When Neutral axis in flange area When Neutral axis in Web area 3.Limit State Method Design Stress strain curve at ultimate state Design value of strength for concrete Singly Reinforced beam Doubly Reinforced Section T-Beam Singly reinforced T Beam 4.Shear Shear Stress For Homogeneous beam For Reinfoced Concrete beam Design Shear strength of concrete 5.Bond ,Anchorage and development Length Bond Stress Permissible bond stress Development length 6.Tortion Equivalent shear force Equivalent moment Tranverse reinforcement Maximum Spacing for Tranverse reinfocement 7.Beam and slabs Effective span Simply supported beam For continues beam Frames Control of delection Slenderness limit One Way Slab Step of design Two way Slab Design of two way slab 8.Columns Working Stress method Slenderness ratio (λ) Load carrying capacity for short column Load carrying capicity for long column Effective length of column Column with helical reinforcement Logitudinal reinforcement Minimum number of bars for reinforcement Minimum diameter of bar Maximum distance between longitudinal bar Pedestal Transverse reinforcement (Ties) Pitch (ρ) Helical reinforcement Some others IS recommendation limit State method Slenderness ratio (λ) Ecentricity Short axially loaded column with helical reinforcement Some others IS code Recommendations Slenderness limit All column should be designed for a minimum eccentricity Concentrically loaded Columns 9.Footing Isoleted Footings Spread footings Combined footings Strap or Cantilever footings Mat or raft foundation Pile Foundation Design of isoleted footing Rectangular footing Desgn Steps 10.Prestress Concrete Analysis of prestess and bending stress Stress concept method Strength concept method Load Balancing concept Tendon with Parabolic profile Losses of Prestress

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