Different Types of Asphalt Binders - Bitumen Grades
In road construction and asphalting the streets, bitumen is mainly used as a binder in the road layers. In road construction, penetration grade bitumen and viscosity grade bitumen are the most commonly used grades; however, other types of bitumen can also be used. According to the "different types of bitumen used for road construction" article by Infinity Galaxy, there are various grades of bitumen applied in road construction.
What is Right of Way - Definition & Factors Affecting RoW
The right of way is the total land area acquired for the construction of the roadway. Its width should be enough to accommodate all the elements of the roadway cross section, any future widening of the road and any public utility facilities that will be installed along the roadway. Right of way is the area of the road acquired for carriages way + other
Transportation Planning Definition and Factors Affecting
Transportation Planning can be defined as Activities related to changing the way transportation services are provided. Transportation plays a vital role in our everyday lives and considered to be an important component of mankind’s infrastructure. All of us travel somewhere almost every day, whether it might be
Applications of Software in Traffic Engineering
It is the mathematical modeling of transportation systems (e.g., freeway junctions, arterial routes, roundabouts, downtown grid systems, etc.) through the application of computer software to better help plan, design and operate transportation systems. Simulation in transportation is important because it can study models too complicated for analytical or
Trip Distribution Models
The gravity model is the most popular of all the trip distribution models. It allows the effect of differing physical planning strategies, travel costs and transportation systems to be taken into account. Within it, existing data is analyzed in order to obtain a relationship between trip volumes and the generation. The cells within a trip matrix indicate the number of trips
Factors Affecting Trip Generation in Traffic Studies
The trip generation aims at predicting the total number of trips generated and attracted to each zone of the study area. In other words this stage answers the questions to / how many trips" originate at each zone, from the data on household and socioeconomic attributes. Purpose of the trip generation studies is to predict the number of the trips to be made
Travel Demand Forecasting (Analysis)
Trip generation models strive to predict the number of trips generated by a zone. These models try to mathematically describe the decision-to-travel phase of the sequential demand analysis procedure. It may be mentioned here that typically the term trip generation is used to mean trip production -- generally the trips made from households, and trip attraction
Factors Affecting Road / Highway Classification
To identify the classification to which any road belongs, the following factors should be considered: SERVICE FUNCTION:- Most roads provide service to traffic, access to land or both. Following road type provide the service function given as; Freeways and Arterials ==> provide the movement of through traffic. Local roads ==> are used almost exclusively for land
5 Major Classes of Roads - Trunk, Primary, District, Local, Residential
Their main function is to facilitate regional distribution of traffic (intercity movement). They may be national or provincial roads and the type of facilities found in this class are freeways, expressways, dual carriageways and single carriageway main roads. This class of road forms the primary network for the urban area as a whole. All long distance traffic movements to
What is Ballast, Materials for Ballast and Screening
The ballast should be renewed from time to time, because due to continuous hammering the ballast converted into the powder form. This powder along with dust, sand ashes from locomotive form an impervious layer and prevent the ease flow of water through ballast. Ballast maximum size is 1.9 to 5.0 cm with some reasonable proportion of intermediate sizes.
Rail Joints - Definition and Types of Railway Joints
The purpose of the rail joint are to hold the two ends of the rail in place and act as a bridge between rail ends. Joint is made up of two bars or more commonly called angled bars. Joint bars prevent lateral or vertical movement of the rail ends and permit the longitudinal movement of the rails for expanding or contracting. ermit the longitudinal movement of the rails for expanding or contracting. Standard Compromise Insulated Joints
Railway Gauges - Types of Railway Gauges
All rail cars and locomotives built to this specification can use any standard gauge railroad line in the world. However, not all railroads have been built to standard gauge. In the United States, gauge can vary slightly between 4 feet, 8.5 inches to 4 feet, 9.5 inches (1,460 mm). Gauge is the measure of distance between the railroad rails. The distance is usually
Components of an Airport
Automobile parking area: This should be on city side. Hangars: These are for servicing, repair and storage aircrafts. They may be located on one side of terminal building. Gate position: It is a space allotted to an aircraft for parking at a loading apron. Runway: It is a paved long and narrow rectangular strip which is actually used for landing and take off of aeroplanes.
Important Definitions in Airport Engineering
It involves the design and construction of facilities for the landing, take off, movement of aircraft on the ground, parking of aeroplanes on loading aprons, maintenance and repairs of areas, access roads from the city side to airport, and handling of passengers, baggage and freight. Aviation means flying with the aid of a machine, heaver than air.
