Permeability of Soil by Constant Head Permeameter

  Objective: Assessment of Permeability of Soil by Constant Head Permeameter. Theory: The coefficient of permeability is equivalent to the degree of flow of water from a unit cross segment area underneath a unit hydraulic gradient. In the unimould head permeameter, the head inducing flow from the sample becomes constant during the experimentation. The coefficient […]

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Softening point of Bituminous Material

Objective: Assessment of softening point of bitumen/tar. Apparatus 1. The ball and ring apparatus comprising of (a) Steel balls-two numbers each of 9.5 mm dimensions with weight of 3.5 ± 0.05 g. (b) Brass rings-two numbers with each with depth of 6.4 mm. The interior width at bottom and crest is 15.9mm and 17.5 mm […]

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How Buildings Twist During Earthquakes?

Why does a building twist? When you were a young child, you ought to have sat on a rope swing – a wooden cradle knotted with twined ropes to the tough branch of a big old tree. The more contemporary kinds of these swings could be witnessed today in the parks and recreation areas in […]

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Bridge Terminology

Here are some of the common bridge terminologies or bridge structure terms used in general: Abutment A retaining wall supporting the ends of a bridge, and, in general, retaining or supporting the approach embankment. Approach The part of the bridge that carries traffic from the land to the main parts of the bridge. Approach Span […]

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Marshall Stability Test – Flow Test

Mississippi State Highway Department planned this test and is material to hot blend outline of bitumen and totals of most extreme size 2.5 cm. In India, bituminous solid blend is normally planned by Marshall Method. This test is widely utilized as a part of routine test programs for the clearing occupations. The steadiness of the […]

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Stability of slopes

A slope refers to the sloped boundary exterior amongst air and the body of a fortification like the highways, cut or fill, earth dams, levees and also the river training works. The constancy of the slope is a very critical aspect in the civil engineering practice. A properly common engineering breakdown of slope is gliding […]

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Magnitude and Intensity of Earthquake

The exact point on the faults where slip begins is known as Focus or Hypocenter, and the point perpendicularly over this on the exterior of the Earth is the Epicenter (Figure 1). The profundity of center from the epicenter, known Focal Depth, is a critical parameter in deciding the harming capability of an earthquake. The […]

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How ground shakes during Earthquake

Seismic Waves Substantial strain energy discharged amid a quake goes as seismic waves every which way through the Earth’s layers, reflecting and refracting at every interface. These waves are of two sorts – body waves and surface waves; the last are limited to close to the Earth’s surface (Figure 1). Body waves comprise of Primary […]

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Flash and Fire Point Test

Objective: To assess the flash and fire point of bitumen Apparatus Special container with thermometer Theory Bituminous material trails out volatiles at high temperatures relying on their review. These unstable vapors discover fire creating a blaze. The flash point is the most reduced temperature at which streak happens because of start of unstable vapors when […]

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Ductility of Bitumen

Objective (i) To compute the ductility of a specific specimen of bitumen (ii) To assess the suitability of bitumen for its application in road construction. Apparatus The apparatus as per IS: 1208-1978 comprises of Briquette mould: It is created out of brass. Circular holes are made at ends known as clips to grasp the stationary […]

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