Showing posts from June, 2018

What is Doppler's Effect ?? - Engineering

The Doppler Effect or the Doppler Shift is defined as the change in frequency of a particular wave for an observer who is moving relative to the source of the wave. This effect is named after the Austrian Physicist Christian Doppler. He proposed the Doppler Effect in the year 1842 in Prague.

Compound Wall Construction Vaasthu

Compound wall construction is the process that is performed before starting the construction of the house/building. We will look into the different steps that are taken care of during the construction process of a compound wall incorporating the features of vasthu.

Structural & Non-Structural Cracks

Cracks in building after its construction i.e. during their service period is a common phenomenon. These cracks are caused due to the action of superimposed loads or any other external factors. Cracks are said to develop in the building when the stress created in the building components exceeds the strength of the individual components. 

Factors Affecting The Choice of Mix Proportions

The various factors that affect the choice of mix proportions are:
Compressive strengthWorkabilityDurabilityMaximum Nominal Size AggregateGrading and Type of AggregateQuality Control
Compressive Strength
It is one of the most important Properties of concrete and influences many other desirable properties of the hardened concrete. The mean compressive strength that is required at a specific age usually 28 days, will determine the nominal water-cement ratio of the mix. The other factor affecting the strength of the concrete at a given age and cured at a prescribed temperature is the degree of compaction. According to Abraham's law, the strength of fully compacted concrete is inversely proportional to the water-cement ratio.
Workability  The degree of workability required depends on the below mentioned three factors:
i. Size of the section to be concreted ii. Amount of reinforcement iii. Method of compaction that is used

Durability The durability of concrete is its resistance to the a…