Group index method of design of flexible pavement is

Which of the following is considered to be the highest quality construction in the group of black top pavements?

Los Angeles testing machine is used to conduct

When the width of car parking space and width of street are limited, generally preferred parking system is

When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment given is

In the penetration macadam construction, the bitumen is

The drain which is provided parallel to roadway to intercept and divert the water from hill slopes is known as

The function of an expansion joint in rigid pavements is to

Select the correct statement.

Penetration test on bitumen is used for determining its

In soils having same values of plasticity index, if liquid limit is increased, then

The maximum limit of water absorption for aggregate suitable for road construction is

The critical combination of stresses for corner region in cement concrete roads is

In highway construction, rolling starts from

The most economical lighting layout which is suitable for narrow roads is

The ideal shape of a transition curve, is

The full width of land acquired before finalising a highway, alignment is known

Tyre pressure influences the

Any gradient on a road is said to be an exceptional gradient, if it is

During last phase of the reconnaissance, details of the grade line is recorded on 2 metre poles to indicate

The most suitable equipment for compacting clayey soils is a

Pick up the correct statement from the following:

Three points A, B and C 500 m apart on a straight road have 500 m, 505 m and 510 m as their reduced levels. The road is said to have

Select the correct statement.

The minimum design speed of various types of highways in plain terrain is the same as the ruling design speed of

Excessive camber on pavements may cause

In hill roads the side drains arc provided

Selection of the routes, of highways depends upon

Maximum number of vehicles that can pass a given point on a lane during one hour without creating unreasonable delay, is known as

A traffic rotary is justified where

Pick up the correct statement from the following:

Pick up the correct statement from the following:

If aggregate impact value is 20 to 30 percent, then it is classified as

Design of horizontal curves on highways, is based on

Set-back distance is the distance between

RC-2, MC-2 and SC-2 correspond to

Speed regulations on roads is decided on the basis of

At intersection of roads, the traffic volume study is carried out to ascertain the number of vehicles

Flexible pavement distribute the wheel load

The most commonly adopted method to provide super-elevation on roads, is by pivoting the road surface about

When load is applied on concrete pavement

The fundamental factor in the selection of pavement type is

If the coefficient of friction on the road surface is 0.15 and a maximum super-elevation 1 in 15 is provided, the maximum speed of the vehicles on a curve of 100 metre radius, is

Pick up the correct statement from the following:

For the construction of water bound macadam roads, the correct sequence of operations after spreading coarse aggregates is

In case of a multi-lane road, overtaking is generally permitted

If degree of a road curve is defined by assuming the standard length of an arc as 30 metres, the radius of 1° curve is equal

The walls which are necessary on the hill side of roadway where earth has to be retained from slipping is known as

If cross slope of a country is greater than 60%, the terrain is classified as

The length of a transition curve, is governed by

When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of rotary is

A gradient along which the vehicle does not require any tractive effort to maintain a specified speed, is known as

In welded wire mesh, the longitudinal wire is placed at

Percentage of free carbon in bitumen is

Pavement is said to be flexible if it contains

Hill roads are

The method of design of flexible pavement as recommended by IRC is

A district road with a bituminous pavement has a horizontal curve of 1000 m for a design speed of 75 km ph. The super-elevation is

The head of public works department of any Indian state, is

Tie bars in cement concrete pavements are at

As per recommendations of I.R.C., traffic volume study is carried out for rural roads for 7 days continuously during

Formation width of a hill road is the distance between

The camber of shoulders in water bound macadam roads is

Traffic surveys are carried out

The difference in gradients after full super-elevation and the initial alignment of a road, is known as

The camber for hill roads in case of bituminous surfacing is adopted as

If C is basic capacity per lane, V is velocity in km/hour, S is stopping distance plus length of the vehicles in metres, the formula C = 1000V/S is applicable to

To prevent movement of moisture from sub-grade to road pavement on embankments about 0.6 m to 1 m higher than water table, the thickness of cut off layer of coarse sand used, is

The direct interchange ramp involves

Design of flexible pavements is based on

The total value of extra widening required at a horizontal curve on a two lane hill road of radius 42 m for a design speed of 50 kmph and for vehicles with wheel base 6 m, is

Which of the following represents hardest grade of bitumen?

The weight of vehicles affects

Pick up the correct statement from the following:

The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life pavement is

According to the recommendations of Nagpur Conference, the width formation of an ideal National Highway in hard rock cutting, is

Setting out of Lemniscate transition curves, is done with

Maximum daily traffic capacity of bituminous pavements is

The head light of vehicles should be such that its lower beam illuminates objects at

The gradients of trace cuts for hilly roads, are kept

Which of the following represents a carpet of sand-bitumen mix without coarse aggregates?

Reinforcement in cement concrete slab of road pavements, is placed

The ability of a driver to stop the vehicle moving with the designed speed, depends upon:

Maximum number of vehicles can be parked with

On concrete roads, the camber generally provided, is

If d is the economic designed depth of a slab, the thickness of the cement concrete pavement slab at interior, is kept

The ductility value of bitumen for suitability in road construction should not be less than

If L is the length of a moving vehicle and R is the radius of curve, the extra mechanical width b to be provided on horizontal curves,

Interior thickness of concrete road slab for design wheel load 6300 kg and permissible flexural stress 21 kg/cm2, is

For rapid curing cutbacks, the oil used is

The width of different roads as recommended in Nagpur plan by the Indian Road Conference for hilly region, is

To prevent a head-on-collision of vehicles travelling in opposite directions along four-lane roads

The maximum thickness of expansion joint in rigid pavements is

Length of vehicles does not affect

The type of curves generally provided on highways, is

The thickness of bituminous carpet varies from

The advantage of providing super-elevation on roads, is

Gradient resistance of moving vehicles along down slopes, is

As per IRC recommendations, the average level of illumination on important roads carrying fast traffic is

Camber in pavements is provided by

Over taking time required for a vehicle with design speed 50 km ph and overtaking acceleration 1.25 m/sec2 to overtake a vehicle moving at a speed 30 km ph, is

The group index for a soil, whose liquid limit is 40 percent, plasticity index is 10 percent and percentage passing 75 micron IS sieve

According to Indian Road Congress, the width of carriageway, is

For night travel, the length of a valley curve should be such that the head light beam distance is the same as

The binder normally used in flexible pavement construction is

Intermediate catch water drains are provided only, if

In retaining and breast walls, weep holes are provided at

In highway construction on super-elevated curves, the rolling shall proceed from

An upgrade g1% is followed by a downgrade g2%. The equation of the parabolic curve of length L to be introduced, is given by

Pick up the correct statement from the following:

Which of the following tests measures the toughness of road aggregates?

Reconnaissance is best done with the help of

To ensure that bullock carts may not overturn on curves, the maximum value of super-elevation, recommended by I.R.C., is

If the group index value of sub-grade is between 5 and 9, then the sub-grade is treated as

An Executive Engineer of roads, executes works under direct control of

The distance travelled by revolving the wheel of a vehicle more than its circumferential movement, is known as

The suitable surfacing material for a bridge deck slab is

If the velocity of moving vehicles on a road is 24 km/per hour, stopping distance is 19 metres and average length of vehicles is 6 metres, the basic capacity of lane, is

Traffic census is carried out for

In CBR test the value of CBR is calculated at

If the radii of a compound curve and a reverse curve are respectively the same, the length of common tangent

The best compromise between the increase of the length of a highway and reduction in its load carrying capacity, is the ruling gradient

Bottom most layer of pavement is known as

The number of vehicles moving in a specified direction on a roadway that pass a given point during specified unit of time, is called

Ruling gradient on hill roads 300 m above M.S.L. is kept

The aggregates required for one kilometre length of water bound macadam road per meter width and for 10 mm thickness is

The minimum value of camber provided for thin bituminous surface hill roads, is

Roundabouts are not suitable if number of vehicles exceed

The minimum design speed for hairpin bends in hill roads is taken as

Thickness of a pavement may be reduced considerably by

To compensate the loss of tractive force of vehicles along curves of radius R, the percentage reduction of gradient, is

The maximum allowable Los Angeles abrasion value for high quality surface course is

The minimum ratio of the radii of two circular curves of a compound curve, is kept

The distance travelled by a moving vehicle during perception and brake reaction times, is known as

Rigidity factor for a tyre pressure greater than 7 kg/cm2 is

The formula for calculating the depth of concrete pavements suggested by Gold beck, is

If a Lemniscate curve having an angle of deflection A, is transitional throughout, the maximum polar angle is

Most suitable material for highway embankments is

The road foundation for modern highways construction, was developed by

Longitudinal pavement lines marked broken in white paint

The recommended grade of tar for grouting purpose is

According to Highway Research Board of U.S.A. practical land width, is

If the radius of a main curve is 300 m and length of the transition curve is 100 m, the angle with tangent to locate the junction point, is

Which of the following premix methods is used for base course?

Pick up the correct statement from the following:

The statement, regarding the size of stones used at the wearing surface. “The size of a stone used on a road must be in due proportion to the space occupied by a wheel of ordinary dimensions on a smooth level surface. The point of contact will be found to be longitudinal about 2.5 cm and every piece of stone put into the road which exceeds 2.5 cm in any of its dimension is mischievous” was made by

Bitumen of grade 80/100 means

Pick up the correct statement from the following:

I.R.T.D.A. (Indian Roads and Transport Development Association) was set up at Bombay in

The maximum spacing of contraction joints in rigid pavements is

If N is deviation angle, the length L, of a parabolic vertical curve for safe stopping distance S, is

A single lane carriage way whenever changes to two-lane carriage way, is affected through a taper of

Softening point of bitumen to be used for read construction at a place where maximum temperature is 40°C should be

According to IRC : 52-1973, for a single lane National Highway in hilly region,

If a Lemniscate curve of transition throughout is introduced to connect two parallel roads, the maximum polar angle of the curve, is

Minimum thickness of a layer of fine sand required to cut off capillary rise of water completely, should be

The standard equation of a cubical spiral transition curve provided on roads, is

If N is the algebraic difference of grades, S is the head light beam distance in metres, the length (L) of a valley curve, is

To prevent compressive stresses in a rigid concrete pavement, the joint provided, is

Along high ways confirmatory route markers are generally fixed

If the width of carriage way is 12.5 metres, outer edge 50 cm higher than the inner edge, the required super elevation is

If N is the net difference of grades, S is the minimum overtaken sight distance in metres, the length (L) of a summit curve, is

Super-elevation on roads in snow bound areas, should generally not exceed

Passing zones are generally not provided on

In a braking test, a vehicle travelling at 36 km ph was stopped at a braking distance of 8.0 m. The average value of the vehicle’s skid resistance (friction coefficient) is

The first stage of deciding the alignment of a hill road, is

The normal road land width for a National or State highway, in open areas should be

Floating gradients are generally provided

If cross slope of a country is upto 10% the terrain is classified as

Area of steel required per metre width of pavement for a length of 20 m for design wheel load 6300 kg and permissible stress in steel 1400 kg/cm2, is