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HD13CE: Concrete Structures
Methods of Design Working Stress Design Method Assumption, Distribution of Stresses on the cross section in bending transformed area, Analysis and Design of a rectangular singly and doubly reinforced section, T and L sections.
Limit State Design Method Assumptions, Distribution of stresses on the cross section in bending Analysis and Design of a rectangular singly and doubly reinforced section, T and L sections. Design of Beam in Shear Behaviour of RC beam in shear, shear strength of beam with and without shear reinforcement, Minimum and Maximum shear reinforcement, Design of beam in shear using working stress and Limit state methods. Bond and Development Length Nature of bond between steel and concrete. Development of bond stress in reinforcement, Concept of development length and anchorage, Design of RC section in bond and calculation of development length using Working stress method and Limit state methods. Rectangular Slabs One way solid slabs, simple supported and continuous two way slabs simply supported and continuous. Compression Members Classification of Compression members into pedestal, long and short column, Effective length, Slenderness ratio and slenderness limit, Axially loaded short columns design using Working Stress and Limit State methods, Increase in permissible load in helically reinforced columns.
Eccentrically loaded columns, Minimum eccentricity, Uniaxially loaded columns, Working stress and Limit State method of design.
Concrete Structure Lab.
List of Practicals/Experiments in Construction Meterials Laboratory.
1. On ordinary portland cement :
(i) To determine the specific gravity of cement using lechatetion flask and the fineness by sieve analysis. (ii) To determine the normal consistency and setting times. (iii) To assess the soundness of OPC using lechaletier apparatus. (iv) To determine the compressive strength of ordinary portland cement.
2. On concrete making Aggregate :
(i) (a) To determine the specific gravity, bulk density and water Absorption of Aggregates. (b) To study the phenomenon of Bulking of sand. (ii) (a) To draw the grading curves for fine and course Aggregates and hence to determine their fineness modules. (b) To determine the impurities in aggregates. (iii) To determine the crushing value, impact value and ten percent fines value for course aggregates.
3. On Fresh and Hardened Concrete.
(i) To measure the workability of concrete using slump cone, compaction factor Apparatus, and Vee Bee consistometer. (ii) To study the effect of W/C Ratio on 28 days compressive strength of concrete.
4. Test on Burnt Clay Bricks :
(a) To determine compressive strength. (b) To determine water Absorption. (c) To assess the degree of efflorescence. (d) To check dimensional tolerance and warpage.
5. Test on Lime :
(i) To determine the fineness of lime. (ii) To determine the compressive strength & workability of lime. (iii) To determine setting times and soundness of lime. 6. On Reinforcing steel : (i) To determine physical and mechanical properties of Reinforcing steel.
9. CE P43 Computer Graphics Lab.
Introduction to DOS System :
Different Graphics Modes and Graphics Drivers Available Development of Computer Programmes to * High light Pixel. * Produce a line, Triangle, Square and other Polygons. * Shading patterns and styles, Filling the given Polygon with given colour. * Text Generation in Graphics and its orientation. * Preparation or plan and elevation of simple building and detailing of building components.
Flat Slab Nature of stresses in flat slabs. Flat slabs with and without drops. Co-efficient for design of flat slabs. Reinforcement in flat slabs. Circular Slabs and Water Tanks Circular slabs with various edge and loading conditions, and their usages in water tanks; Design criteria, material specifications and Permissible stresses for tanks, Design of circular and rectangular tanks situated on the ground/underground under hoop stresses. Design of Beams in Torsion Failure of beam under torsion, interaction between shear and torsion and between moment and torsion, Concept of equivalent sheer and moments. Analysis and design of beam curved in plan. Spread Footing Structural behaviour of footings, design of footing for a wall and a single column, combined rectangular and trapezoidal footings, Design of strap footing. Retaining Walls Structural behaviour of retaining wall, stability of retaining wall against over-turning sliding and pressure developed under the base, Design of T-shaped retaining wall, Concept of counterfort retaining wall. Introduction to Pre-Stressed Concrete Advantages of prestressing, methods of prestressing, Losses in prestrees, analysis of simple prestressed rectangular and T-section. Note - Two hour practical is for drawing work. Introduction to Bridge Design Loads, forces and I.R.C. bridge loadings. Design of slabs under concentrated loads using effective width and pigeaud’s Method. Detached design of R.C. slab culvert.
Reference Books
1. Jain A.K. : Reinforced Concrete Design, Limit State Method. 2. Syal I.C. & Goel A.K. : Reinforced Concrete Structures. 3. Malik S.L. and Gupta : Reinforced Concrete. 4. Jaikrishna and Jain : Plain and Reinforced Concrete Vol. I & II. 5. Dayaratnam P. : Reinforced Concrete Design. 6. Park R & Pauley T. : Reinforced concrete structures. 7. IS 456-1978 code of practice for plain & Reinforced concrete. 8. SP-16 Design Aids of Reinforced Concrete to IS : 456-1978. 9. IS : 3370 Code of practice for water retaining structures.
Structure Detailing Lab.I
Students are required to prepare working drawings manually as well as on computer for the following: 1. Simple Beam/Lintel 2. T-Beam floor 3. Rectangular Slabs 4. Brick wall and Isolated footing 5. Combined Rectangular and Trapezoidal Footing 6. Water tank 7. T. shape Retaining wall
Structure Detailing Lab.II
1. Detailing of Retaining walls 2. Water tanks 3. Rolled sections and connections. 4. Build-up columns and beams
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