Steel beam theory is used to find the MR of doubly reinforced beam

Steel beam theory is used to find the approximate value of the moment of resistance of a doubly reinforced beam specially when the area of compression steel is equal to or more than the area of the tensile steel. Steel beam theory moment of resistance of a doubly reinforced beam The moment of resistance of …

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Types of problem in doubly reinforced beams working stress method

Types of problem in doubly reinforced beams working stress method: Determination of moment of resistance of the given section,Determination of actual stresses in concrete and steel,Design of the section. Types of problem in doubly reinforced beams working stress method Determination of moment of resistance of the given section. Determination of actual stresses in concrete and steel. …

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Analysis of a doubly reinforced beam|Working stress method

Learn : Analysis of a doubly reinforced beam working stress method : modular ratio, Equivalent section,critical neutral axis, actual neutral axis, stresses in the section, moment of resistance. Analysis of a doubly reinforced beam working stress method  Modular Ratio (a)       Modular ratio for tensile steel is taken as m where \[m = \frac{280}{3\sigma_{cbc}}\]. (b)       Modular …

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Necessity of Doubly reinforced beam|working stress method

Learn : Necessity of Doubly reinforced beam, Doubly reinforced beam DOUBLY REINFORCED BEAMS The R.C.C. beams in which the steel reinforcement is placed in the tension as well as compression zone are called as doubly reinforced beams. The moment of resistance of a balanced R.C.C. beam of dimension b×d is Rbd2 Sometimes due to head …

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Problems in singly reinforced beam working stress method

Learn : Three types of problems in singly reinforced beam working stress method :To determine the moment of resistance of the given section,To determine the stresses developed in concrete and steel under given loading,To design the section for given loading Problems in singly reinforced beam working stress method There are three types of problems in …

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Balanced sections,under reinforced section and over reinforced section

  Balanced sections,under reinforced section and over reinforced section   Balanced Sections A balanced sections is that in which stress in concrete and steel reach their permissible value at the same time. This means that stress diagram is as shown in Fig. 2.6(b). The percentage of steel corresponding to this section is called as balanced …

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Analysis of singly reinforced beam Working stress method

Learn : Analysis of singly reinforced beam Working stress method,Equivalent or Transformed Section,Strain Diagram,Stress Diagram,Neutral Axis,Stresses in Concrete and Steel , Dimensions of the Beam and Area of Steel,Percentage of Steel,Lever arm, moment of resistance Analysis of singly reinforced beam Working stress method Analysis of singly reinforced beam Working stress method : A singly reinforced …

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Concept of transformed or equivalent section of a RCC beam

Learn : Concept of transformed or equivalent section of a RCC beam,load carried by steel.load carried by concrete,section in terms of concrete CONCEPT OF TRANSFORMED OR EQUIVALENT SECTION Consider an R.C.C. section shown in Fig. 2.2(a) subjected to a compressive load P. Let      A         = Area of cross-section Ac        = Area of concrete Ast       …

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PERMISSIBLE STRESSES (CLAUSE B-2, IS456:2000)

PERMISSIBLE STRESSES (CLAUSE B-2, IS456:2000),Permissible Stresses in Concrete ( IS 456),Permissible Stress in Steel Reinforcement ( IS 456) PERMISSIBLE STRESSES (CLAUSE B-2, IS456:2000) The working stress method is based upon the concept of permissible stresses. Permissible stresses are obtained by dividing the ultimate strength of concrete or yield strength of steel (0.2% proof stress) by …

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Types of R.C.C. beam, Fundamental assumptions of elastic theory of bending

Learn: Types of R.C.C. beam,Singly,doubly and T, Flanged Reinforced Beams,fundamental assumptions of elastic theory, Assumptions in the theory of simple bending of R.C.C. beams(Working stress method) Plain Cement Concrete has low tensile strength. A beam made up of plain cement concrete will have low load carrying capacity and will fail by cracking in the tension …

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Natural rubber,Treatments to improve and modify natural rubber properties

How To Learn rubber  : Natural Rubber(India Rubber),Treatments to improve and modify natural rubber properties,Reclaimed Rubber,Synthetic Rubber,Rubber flooring materials for general purposes RUBBER It is essentially an elastic material and is obtained both as natural and as synthetic material.  Natural Rubber (India Rubber). Natural rubber  is present as an emulsion in the latex of certain …

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Thermocol Building material

 THERMOCOL Thermocol : It is the trade name of a very light and cellular plastic material. Initially it is obtained in liquid form and then molded into desired forms. it is an excellent insulating material of heat, sound and electricity. It is very light, strong and durable. It resists dampness. Its compressive strength is 117 …

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Stones tests, weathering, durability, water absorption, compressive strength

Stones Tests Stones tests :weathering of natural building stones,durability of natural building stones, water absorption and porosity, determination of true specific gravity,compressive strength To know the suitability of building stones for meeting the specific requirements of different Engineering works the following few tests of stones may be performed. The tests of stones listed below meet …

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Classification of rocks

Learn : Classification of rocks,Geological classification of rocks, Physical classification of rocks, Chemical classification of rocks CLASSIFICATION OF ROCKS Stones are obtained from rocks. A rock forms portion of earth's crust having no definite shape or chemical composition. It is usually a mixture of two or more minerals and is not homogeneous.             Rocks from …

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Building stones

Learn : Stones, Building stones,causes - Stone are gradually losing their universal use as a building materials, Uses - Stones are extensively used STONES Stone is a natural material of construction and is obtained from quarries. Since prehistoric days it has been used for constructing different components of buildings like foundations, walls, lintels, floors, roof …

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Plane Truss and Geometric stability and static determinacy of trusses

Truss A truss is an articulated structure composed of straight members arranged and connected in such a way that they transmit primarily axial force. If all the members lie in one plane it is called a plane truss. A three-dimensional truss is called a space truss.  PLANE TRUSS                                                                        The basic form of a truss is …

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Advantage of cavity walls Precautions to be taken constructing cavity walls

In this Article Learn Cavity wall, Advantage of cavity walls Precautions to be taken while constructing cavity walls,bricks or metal,bonding bricks or metal Cavity walls A cavity wall is a double leaf wall having a cavity in between. The outer leaf is generally 10 cm thick and the inner leaf may be 10 cm or …

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Effects of dampness, sources of dampness, prevention of dampness

In this Article Learn Causes dampness, Effects of dampness, sources of dampness : Rising moisture of the ground,From the external walls,  Top of walls, Condensation, prevention of dampness Dampness One of the most important requirements .of a building is that it should remain dry, that is, damp proof. If this condition is not satisfied, it …

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Working stress method load factor or ultimate load method limit state method

In this Article Learn : Various methods used for the design of R.C.C. structures,Working stress method,Load factor or ultimate load method,Limit state method, The main drawbacks of the working stress method of design,the advantages of Ultimate load method,The main limitations of the ultimate load method,The two important limit states to be considered in design:Limit State of …

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Dead loads, Live load or imposed load, Wind load, Snow Load,Earthquake loads.

In this Article: Learn Types of loads on R.C.C. Structures, Dead loads, Live loads or imposed loads, Wind loads, Snow Loads,Earthquake loads. See also The loads coming on the foundations TYPES OF LOADS ON R.C.C. STRUCTURES Structures are designed to withstand various types of loads. The various types of loads expected on a structure are …

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