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Blog Entry# 3670754
Posted: Jul 30 2018 (10:17)

10 Responses
Last Response: Jan 12 (18:27)
Info Update
Jul 30 2018 (10:17)  

16229🔹MYS🔄BSB Express🔹16230^~   13108 blog posts   3426 correct pred (95% accurate)
Entry# 3670754            Tags   Past Edits
1) Traffic survey
Traffic survey includes a detailed study of the traffic conditions in the area.
Traffic surveys are normally undertaken in conjunction with reconnaissance or preliminary engineering surveys so that the technical feasibility and relative costs of alternative proposals can be formulated. The traffic survey team should work in close cooperation with the engineering survey team. The survey team should visit all trade centres in the area and consult local bodies, state governments, and prominent citizens regarding trade and industry and propose the most suitable alignment for the new line.
traffic survey team should make an assessment of the traffic likely to be carried by to the new line. While carrying out the survey, details of traffic likely to be offered by various government organizations, public bodies, or private enterprises should be gathered.
At the end of the survey, a report should be formulated by the officer-in-charge of the survey. The formation of the report is governed largely by the nature of the terms of reference and the investigations made. The traffic survey report should normally contain the following information:
(a) History of the proposal and terms of reference
(b) General description
(c) Potentials and prospects
(d) Industrial and economic development and traffic projections
(e) Population projection and volume of passenger traffic
(f) Existing rates and rates to be charged
(g) Location of route or routes examined, alternate routes, and possible extensions
(h) Station sites and their importance
(i) Train services, section capacity, and various alternative ways of increasing capacity
(j) Coaching earnings
(k) Goods earnings
(l) Working expenses and net receipts
(m) Engineering features
(n) Telecommunication facilities
(o) Financial appraisal
(p) Conclusions and recommendations
Source: click here

1 Public Posts - Mon Jul 30, 2018

Jul 30 2018 (10:44)
16229🔹MYS🔄BSB Express🔹16230^~   13108 blog posts   3426 correct pred (95% accurate)
Re# 3670754-2            Tags   Past Edits
3) Preliminary survey
The preliminary survey consists of a detailed instrumental examination of the route to be selected as a result of the reconnaissance survey in order to estimate the cost of the proposed railway line. Based on the preliminary and traffic survey reports, the railway administration decides whether or not the proposed railway line is to be constructed.
3.1) Instruments for Preliminary Survey
instruments to be used for a preliminary survey will depend on the topography of the country and its flora. The survey instruments normally used are Theodolite, Tacheometer, Dumpy level, Plane table, Prismatic compass.
3.2) Field Survey
The route selected is surveyed in greater detail in the preliminary survey. The survey normally covers a width of 200 m on either side of the proposed alignment. The following survey work is carried out.
(a) An open traverse is run along the centre line of the proposed alignment with the help of a theodolite, tacheometer, or a compass.
(b) Longitudinal and cross levelling on the proposed route for a width of 200 m on either side in order to make an accurate contour map.
(c) Plane tabling of the entire area to obtain various geographical details.
(d) Special survey of station sites, level crossings, and bridges using the plane table.
3.3) Data
The following information should normally be collected during a preliminary survey.
(a) Geological information such as type of soil strata and the nature of rocks.
(b) Source of availability of construction materials such as sand, aggregate, bricks, cement, and timber.
(c) Facilities for construction such as the availability of labour and drinking water.
(d) Full details of the land and buildings to be acquired.
(e) Details of existing bridges and culverts along with information about proximity of tanks, bunds, etc., which may affect the design of bridges.
(f) Details of road crossings along with the angles of crossing and the traffic expected on the level crossings.
(g) High flood level and low water level of all the rivers and streams falling on the alignment.
(h) Full details of station sites along with the facilities required.
3.4) Preparation of Project Report
A report based on the preliminary survey is prepared after obtaining an estimate of the cost. The project report should contain the following details.
(a) Introduction
(b) Characteristics of the project area
(c) Standard of construction
(d) Route selection
(e) Project engineering including cost estimate and construction schedule
(f) Conclusions and recommendations
3.5) Cost Estimate
The report should be accompanied by cost estimate. The estimate based on the preliminary report should be sufficiently accurate to enable a competent authority to take a decision regarding the construction of the new line. The estimate should contain the following details.
(a) An abstract cost estimate of the line surveyed accompanied by an abstract estimate of junction arrangements.
(b) Detailed estimates of land, tunnels, major bridges, minor bridges, one kilometre of permanent way, rolling stock, and general charges.
The report and estimate should be accompanied by the following drawings.
(a) Map of the area (scale 20 km = 1 cm)
(b) Index plan and section (scale 0.5 km to 1 cm horizontal and 10 m to 1 cm vertical)
(d) Detailed plans and sections Plans of station yards
(e) Plans of junction arrangements
Source: click here

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