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Correct option is (d) Drainage of soil, Stabilisation of soil and Compaction of soil

The explanation: The major factors which governs the thickness of the pavement are ‘Traffic’ and ‘subgrade soil STRENGTH’ apart from climatic conditions ( frost action etc.), MATERIAL characteristics etc.

However, there were no OPTIONS related to the above discussed.

Option (Drainage of soil) affects the thickness because the subgrade soil strength (measured in CBR (%)) changes with the density of the soil.

Option (Stabilisation of soil) also affects the thickness because the stabilized soils do possess higher soil strength/desired properties than the unstabilized.

Option (Compaction of soil) deals with the drainage of the soils. Drainage affects the performance of the pavement. If the pavement results in a poor performance under drainage condition, an additional “drainage layer” should be provided (IRC 37:2012) and also while strengthening the roads, it is expected to get more characteristic deflection results in providing more thickness than the properly drained pavement.

Right OPTION is (b) False

To elaborate: INTER coat shall be of STONE ballast, or over burnt BRICK ballast of 12CM thick layer and consolidated and compacted by road roller to 8 cm.

Correct option is (b) False

Easy explanation: If the soil is not good and does not permit vertical sides, the sides should be SLOPED back or PROTECTED with timber shoring. EXCAVATED earth SHALL not be placed within 1M of the edge of trench.

Right answer is (d) Fortnight

The explanation: The WETTING should be DONE by covering with straw or sand and watering FREQUENTLY by water-can or driving into squares by mud DIARIES which shall be kept FLOODED with water.

Right answer is (a) 45 cm

For explanation: Road signs in the Republic of India are similar to those used in some parts of the United Kingdom, except that they are multilingual.

Most urban roads and state highways have signs in the state language and English. NATIONAL highways have signs in the Hindi and English.

In 2012, the Tourism department of Kerala announced PLANS to upgrade road signs in the state to include maps of nearby HOSPITALS. The Noida Authority announced plans to REPLACE older signboards with new fluorescent SIGNAGE.

Right option is (b) skid

The best EXPLANATION: An automobile skid is an automobile handling condition where one or more tires are slipping relative to the road, and the overall handling of the vehicle has been affected.

In (automotive) vehicle dynamics, SLIP is the relative motion between a tire and the road surface it is moving on. This slip can be generated EITHER by the tire’s rotational speed being greater or less than the free-rolling speed (USUALLY described as PERCENT slip), or by the tire’s plane of rotation being at an angle to its direction of motion.

Correct answer is (b) False

To ELABORATE: During LIME concreting in FOUNDATION if kankar lime is used 0.35 cu m of kanakar lime SHALL be used with 1 cu m ballast and no surkhi or sand or cinder shall be added. When brick ballast is not available, in hill areas, stone ballast 40 mm gauge, sand and white lime may be used in the same proportion as above.

Right option is (a) stone dust

Easiest explanation: Stone dust is like a darker, coarser version of sand. It is a byproduct of running stones through a crushing machine to make crushed stone. Its exact composition will obviously depend on what kind of stone was RUN through the machine. For instance, sometimes granite is run through such a machine; in other cases, it could be LIMESTONE, for example. The machine has a screen that TRAPS the larger material (that is, the crushed stone). The smaller material or “screenings” falls through the screen. Depending on the SIZE of the holes in the screen used, it can be so fine in texture that it is BASICALLY a powder.

Right answer is (a) True

To explain: Surkhi SHALL be made of well burnt BRICKS or brick BATS and shall pass through a sieve of 2.5 meshes per SQ CM. Surkhi is preferable for better concrete.

The correct answer is (c) District road

To explain: District ROADS are sub-classified into – Major District Roads and Other District Roads. As per the classification of roads BROADLY the MDRs are to have a MINIMUM width of 15 metres with traffic density of less than 10,000 PCUs but more than 5000 PCUs. It also connects Taluka headquarters and rural areas to District headquarters WITHIN the state. As on 31 March 2016, the total length of district roads was approximately 561,940 km of which 94.93 % of the total length were surfaced.

Correct choice is (b) floating or second COAT of 10 MM to 6 mm

For explanation: The first coat shall be applied on the PREPARED raked cleaned and wetted surface by DASHING the mortar and floated roughly with wooden float. It shall be kept damp for at LEAST two days. When the first coat has sufficiently set, the surface shall be wetted and a second coat of plaster shall be applied and brought to true even surface and then lightly roughened with a wooden float to provide bond for the finished coat.

Right option is (c) 40 mm

For EXPLANATION I would SAY: It shall be deep CHERRY red or copper colour and shall be CLEAN, free from dust, dirt, and other foreign matters. It shall be homogeneous in texture and rough cubical in shape. Ballast which APPEARS porous or shows signs of saltpeter shall not be used.

Right choice is (a) True

Explanation: The mud should be made of selected earth of tenacious NATURE so that it sticks and binds BRICKS. The earth should be SOAKED in water at least one DAY before and then worked up with water by LABOURER trading it until it is perfectly free from lumps and forms a thick plastic mix.

Correct CHOICE is (b) 2.5 cm

To explain: D.P.C.shall be 2.5 cm (1”) thick CEMENT concrete 1:1 1/2:3, mixed with one kg of impermo per bag of cement or other standard water PROOFING MATERIALS as specified and painted with two coats of bitumen.

Right choice is (c) WOOD stain

The BEST I can explain: Vehicle is the preferred term, as the contents of a stain MAY not be truly ‘dissolved’ in the vehicle, but rather ‘suspended’, and thus the vehicle may not be a true ‘solvent’. The vehicle often may be water, alcohol, a petroleum distillate, or a finishing agent such as SHELLAC, lacquer, varnish and polyurethane. Coloured or ‘stained’ finishes do not typically deeply penetrate the pores of the wood and may largely disappear when the finish deteriorates or is removed.

Right option is (c) Teak wood

To explain I would say: SHUTTERS shall be teak wood 4.3 CM thick panelled glazed or partly panelled and partly glazed as required, with ADDITIONAL WIRE gauge shutters. All fittings shall be of brass. Doors and windows shall be varnished or painted two COATS with high class enamel paint over one coat ofpriming.

The correct choice is (b) False

To explain I would say: Any treasure and valuables or materials FOUND during the EXCAVATION, SHALL be the PROPERTY of the GOVERNMENT.

The correct option is (c) 1ST class

The explanation is: Characteristics of first class brick-

 – All bricks should be of first class of standard specifications.

–Bricks should be MADE of good earth completely burnt.

–Bricks should be of deep CHERRY red or copper colour.

–Bricks should be regular in shape.

–Edges of bricks should be sharp.

–On being struck, bricks should emit clear RINGING sound.

–Bricks should be free from cracks, chips, flaws and lumps of any kind.

–Bricks should not ABSORB water more than one sixth of its weight after one hour of immersing in water.

The correct option is (a) True

Easiest explanation: The consumption of fuel, etc., many be taken as-Petrol or DIESEL oil 3 km PER litre, mobil oil 100 km per litre. The QUANTITY of fuel consumption and the cost of fuel MAY be CALCULATED as the local rates.

Right option is (d) ELEVATION of road

The best explanation: TRUCKING companies (AE) or HAULAGE companies / hauliers (BE) accept cargo for road transport. Truck drivers operate either INDEPENDENTLY – working directly for the client – or through freight carriers or shipping AGENTS. This also applies to shipments that are transported out of a free port.

Right option is (a) True

For explanation: The average speed of a BULLOCK CART may be taken as 3.5 km per HOUR and ¾ hour may be allowed for LOADING and unloading.

The correct choice is (b) N=8/(2L/S+3/4)

Explanation: where L=Lead(distance) in km, S=speed in km PER HOUR and ½ hour time is ALLOWED for loading and unloading.