2.A simply supported beam has a width of 200mm and depth of 400mm is 4m long. It carries a
uniformly distributed load of 20 kN/m over the whole beam and a point load of 40 kN at the
center of the beam. Compute the maximum deflection if the maximum slope produced in the
beam is 2× ??-3 radian.

The majority of new railways are being built for use with electric traction, with many existing railways also being electrified. Summarise:

(i) The benefits of an electrified railway when compared with conventional (diesel) motive power

(ii) The advantages and disadvantages of the two different types of electrification system

(iii) The practical applications of each type of system. Give reasons for your answer.

(b) Describe some common ways of stabilising failed soil slopes. Explain your answer using sketch drawings where appropriate.

(c) Detail and discuss three aspects of water management and control within railway geotechnics and the implications of mismanagement.

Review the methods available for circular slip slope stability analysis in terms of both total and effective stress and explain the circumstances in which each method would be used.

State what the following terms mean and describe briefly how they improve safety in railway signalling:

(i) Block

(ii) Distant Signal

(iii) Overlap

(iv) Track Circuit

(v) Axle Counter

There are several methods for mounting a rail to form a track for the railway engineer. For the following methods, state the advantages and disadvantages and describe where they would most likely be used:

(i) Timber sleeper

(ii) Steel sleeper

(iii) Mono-bloc concrete sleeper

(iv) Twin-bloc concrete sleeper

(v) Slab track

a) During the manufacturing process of rail steel, chemicals may be naturally found in or added to the steel.

For each of the following chemicals, describe where it comes from in the manufacturing process and the effect that it has on the rail steel:

(i) carbon

(ii) silicon;

(iii) sulphur;

(iv) manganese;

(v) hydrogen

(vi) boron and molybdenum

A major roadway with a speed limit of 45 mph has an intersection that has no intersection control with a minor roadway at a right angle. A building is located next to the intersection at a distance of 60 feet from the center of the farthest lane on the major roadway and 40 ft from the center of the nearest lane on the minor roadway. The major road (E-W) has a grade of +4% from east to west and the minor road has a +5% grade from north to south. What is the maximum speed limit for the minor roadway?

2) A 100-m curve is to connect a downgrade of 0.75% to an upgrade of 0.25%. If the level of the intersection point of the two grades is 150 m, calculate the necessary data for planning the curve ??

Can you please give me five journal papers on the "The Tacheometric Surveying " from wherever it is possible?

Problem No. 1 The soil profile at a site consists of a top 4 m layer of dense sand followed by 2 m of clay, which is underlain by a stiff stratum. The water table is at 2 m below the ground level. The follow- ing data was obtained from a consolidation test on an undisturbed sample obtained from the middle of the clay layer: water content 36%, specific gravity of the clay grains = 2.72, compression index = 0.72, recompression index = 0.07, preconsolidation pressure = 85 kPa. The bulk and saturated unit weights of the sand are 17 kN/m' and 18.5 kN/m' respectively. The ground level was raised by placing 2 m of compacted fill with a unit weight of 20 kN/m'. Estimate the final consolidation settlement. It is proposed to construct a warehouse covering a large area on top of the raised ground, which is expected to impose a pressure of 25 kPa. What would be the additional consolida- tion settlement?

A 20 mm-thick sample in a singly drained laboratory consolidation test reaches 75% consolidation in 5 hours. How long will it take to reach 75% consolidation for a 5 m-thick clay sandwiched between two sand layers in the field?

In Railroad Geotechnical Engineering, please give a correct answer and good explanation

1. Define “Critical Speed” related to a train inducing a large ground-borne vibration.

What has been the impact of the Citizens United and Speechnow decisions on political campaign funding?

What are the key elements of diagramming techniques?

Name the commonalities between three different diagramming techniques.