Basic Structural Elements

An RC structure consists of different structural elements. It may also contain non-structural elements such as partitions and false ceilings. The function of any structure is to resist the applied loads effectively and to transmit the resulting forces to the supporting ground without differential settlement. At the same time the structure should also satisfy the… Continue reading Basic Structural Elements

concrete · Design

Reinforced Concrete Structural Forms

Structural design is an art of selection of the most suitable system for a given structure. The arrangement of beams and columns to support the vertical (gravity) loads and the selection of a suitable structural system to resist the horizontal (lateral) loads pose a great challenge to the structural engineer, as these factors will determine… Continue reading Reinforced Concrete Structural Forms

Case study · concrete

Case Study: Mantri Square Mall Cantilever projection collapse Report

Preamble: The commercial building Mantri mall, is a conventional RC framed structure with two basements, ground and three upper floors. The building was built during 2006 to 2008. It was reported that part of this commercial building located at Malleshwaram, Bengaluru was collapsed at about 1.30PM on Monday, 16th Jan 2017. The scope of this… Continue reading Case Study: Mantri Square Mall Cantilever projection collapse Report

concrete · Design

Mix Proportioning of Concrete

The following data is required for concrete mix proportioning of a particular grade of concrete: Exposure conditions of the structure under consideration (see table 3 of IS 456:2000). Grade designation – The minimum grade of concrete to be designed for the type of exposure condition under consideration (see table 3 and table 5 of IS… Continue reading Mix Proportioning of Concrete

Building Materials · concrete · Steel

Non-destructive Testing

Non-destructive tests are used to find the strength of existing concrete elements. Half-cell electrical potential method to detect the corrosion potential of reinforcing bars in concrete. Schmidt/Rebound hammer test to evaluate the surface hardness of concrete. Carbonation depth measurement test to determine whether moisture has reached the depth of the reinforcing bars, thereby leading to… Continue reading Non-destructive Testing

concrete · testing

Modulus of Elasticity and Poisson’s Ratio

Concrete is not an elastic material i.e., it will not recover its original shape on unloading. In addition, it is non-linear and exhibits a non-linear stress-strain curve. Hence, the elastic constants such as modulus of elasticity and Poisson’s ratio are not strictly applicable. However, they are used in the analysis and design of concrete structures, assuming elastic behavior. The… Continue reading Modulus of Elasticity and Poisson’s Ratio