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Channel: Transportation – The Constructor
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INTELLIGENT TRANSPORTATION SYSTEM

INTELLIGENT TRANSPORTATION SYSTEM Why it’s Needed? Traffic congestion-insufficient road development-growing   number of vehicles. Low speed, increased accident rates, increased fuel consumption, and...

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GEOTEXTILES

Geotextile is defined as a permeable textile material used in contact with soil, rock, earth etc as an integral part of civil engineering project, structure or system It may be of natural materials...

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RUBBER TYRED METRO

A Rubber-tyred metro is a form of rapid transit system that uses a mix of road and rail technology. In this the vehicles have wheels with rubber tyres like a bus, but using a set of two parallel...

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PROCESSES IN BITUMINOUS ROAD CONSTRUCTION

Bituminous road constructions steps: 1. Preparation of the existing base course layer The existing surface is prepared by removing the pot holes or rust if any. The irregularities are filled in with...

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DISINTEGRATION OF WBM & ASPHALT ROADS

Various Cause of Disintegration of Water Bound Macadam and Surface Treated (Asphalt Roads): 1. Inadequate stability or strength 2. Loss of binding action 3. Loss of base course materials 4. Inadequate...

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LOAD-TRANSFER RESTORATION OF PAVEMENTS

New pavement joints typically exhibit good load transfer, particularly if the joints are doweled. However, repeated heavy loads can cause an elongation of the dowel sockets and result in dowel...

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CBR METHOD – I R C RECOMMENDATIONS

I R C RECOMMENDATIONS FOR THE CBR METHOD OF DESIGN Some of the important points recommended by IRC for the CBR method of design (IRC:37 – 1970) are given below: The CBR tests should be performed on...

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PARTIAL-DEPTH REPAIR OF PAVEMENTS

The purpose of partial-depth repairs is to correct localized areas of concrete pavement distress. Repair of this type restores rideability, deters further deterioration, reduces foreign object damage...

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MagLev Trains

MAGLEV, or magnetic levitation, is a system of transportation that suspends, guides and propels vehicles, predominantly trains, using levitation from a very large number of magnets for lift and...

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Monorail Train In India

A monorail is a rail-based transportation system based on a single rail, which acts as its sole support and its guideway. The term is also used variously to describe the beam of the system, or the...

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Vertical Transportation in Tall Buildings

A low rise building might be described as one where the able bodied do not need a lift to reach their floor, but if one is available they invariably use it. This would imply a building of 3-5 floors. A...

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Ground Freezing – Tunneling Methods

Ground Freezing • Ground freezing is a process of making water-bearing strata temporarily impermeable and to increase their compressive and shear strength by transforming joint water into ice. •...

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RECONNAISSANCE SURVEY METHODS FOR HIGHWAY ROUTE SELECTION

Reconnaissance survey is done to examine the general character of the area for the purpose of determining the most feasible route or routes for further more detailed investigations. Data collected from...

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TYPES OF PAVEMENT – FLEXIBLE AND RIGID PAVEMENT

There are two types of pavements based on design considerations i.e. flexible pavement and rigid pavement. Difference between flexible and rigid pavements is based on the manner in which the loads are...

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SIGHT DISTANCE CONSIDERATIONS FOR HIGHWAYS

What is Sight Distance in Highway Engineering? Sight Distance is a length of road surface which a driver can see with an acceptable level of clarity. It plays an important role in geometric highway...

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SUPERELEVATION AND ITS DESIGN FOR HIGHWAYS

What is Superelevation in Highway Engineering? To counter-act the effect of centrifugal force and reduce the tendency of vehicle to overturn and to skid laterally outwards, pavement outer edge is...

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FLEXIBLE PAVEMENT DESIGN BY GROUP INDEX METHOD

Before Design of Flexible Pavement by Group Index Method, let us understand What is Flexible Pavement? A true flexible pavement yields “elastically” to traffic loading. It is constructed with a...

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VERTICAL ALIGNMENT OF HIGHWAYS

What is vertical alignment of highways? The vertical alignment of highway generally defined as the presence of heights and depths in vertical axis with respect to horizontal axis of alignment. These...

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HORIZONTAL TRANSITION CURVES FOR HIGHWAYS

What is transition curve and when it is needed? Transition curve is a curve in plan which is provided to change the horizontal alignment from straight to circular curve gradually means the radius of...

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FLEXIBLE PAVEMENT DESIGN BY CBR METHOD

Flexible pavement design by CBR method is used to determine the total thickness of pavement. Pavement design by CBR method recommended by California State of Highways and IRC are explained. Read More...

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