Description : The fundamental factor in the selection of pavement type is (A) Climatic condition (B) Type and intensity of traffic (C) Sub-grade soil and drainage conditions (D) Availability of funds for the construction project
Last Answer : Answer: Option B
Description : Flexible pavement distribute the wheel load (A) Directly to sub-grade (B) Through structural action (C) Through a set of layers to the sub-grade (D) None of the above
Last Answer : Answer: Option C
Description : Bottom-most component of a flexible pavement, is (A) Sub-grade (B) Sub-base (C) Base (D) Base course
Last Answer : Answer: Option A
Description : In a concrete pavement, during summer, at and soon after mid-day, the combined stress at the interior of the slab is equal to : (a) Wheel load stress + Temperature warping stress + Sub ... + Sub grade resistant stress (d) Wheel load stress - Temperature warping stress − Sub grade resistant stress
Last Answer : (b) Wheel load stress + Temperature warping stress – Sub grade resistant stress
Description : In cement concrete pavements, tensile stress is due to: (A) Bending or deflection under wheel loads (B) Difference in temperature of the top and bottom of pavement (C) Contraction of slab during falling temperature (D) All the above
Last Answer : Answer: Option D
Description : The method of design of flexible pavement as recommended by IRC is (A) Group index method (B) CBR method (C) Westergaard method (D) Benkelman beam method
Description : To prevent movement of moisture from sub-grade to road pavement at the same level as that of water-table, thickness of a cut off layer of coarse sand, is (A) 15 cm (B) 20 cm (C) 30 cm (D) 45 cm
Description : Bottom most layer of pavement is known as (A) Wearing course (B) Base course (C) Sub-base course (D) Sub-grade
Description : 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 (A) 15 cm (B) 20 cm (C) 30 cm (D) None of these
Description : Which of the following correspond to the recommendations of IRC for pavement thickness determination by CBR Method ? 1. CBR tests are to be conducted in-situ 2. Static compression is best adopted 3. The top 50 cm of sub grade ... 1, 2 and 3 (b) 1 and 2 only (c) 2 and 3 only (d) 1 and 3 only
Last Answer : (c) 2 and 3 only
Description : 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 (A) 70 kg/sq cm (B) 80 kg/sq cm (C) 90 kg/sq cm (D) 100 kg/sq cm
Description : California Bearing Ratio method of designing flexible pavements is more accurate as it involves (A) Characteristics of soils (B) Traffic intensities (C) Character of the road making materials (D) None of these
Description : Design of highways is based on (A) Axle loads (B) Axle spacings (C) Wheel bases (D) All the above
Description : Shoulders for high traffic volume roads, should (A) Be stable throughout the year to be used by vehicles in the case of emergency (B) Support and protect the ends of carriage ways (C) Not allow entrance of water to sub-grade (D) All the above
Description : Cement grouted pavement is classified as (A) Rigid pavement (B) Semi-rigid pavement (C) Flexible pavement (D) None of these
Last Answer : B
Description : Following type of pavement is generally known as flexible pavement (A) Water-bound macadam roads (B) Stabilised soil roads (C) Road constructed with various layers of building material well compacted (D) All the above
Description : Minimum thickness of the base of a flexible pavement, is (A) 10 cm (B) 15 cm (C) 20 cm (D) 25 cm
Description : The binder normally used in flexible pavement construction is (A) Cement (B) Lime (C) Bitumen (D) None of the above
Description : Pavement is said to be flexible if it contains (A) Water bound macadam surface (B) Stabilised soil base constructed of lime cement or tar (C) Bitumen-bound stone layer of varying aggregates (D) All the above
Description : The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life pavement is (A) 1000 (B) 10,000 (C) 1,00,000 (D) 10,00,000
Description : What is Traffic Engineering? Define the term busy hour, traffic intensity and grade of service.
Last Answer : Traffic engineering provides the basis for analysis and design of telecommunication network to carry a given traffic at a particular loss probability. It provides a means to determine the quantum of common equipments ... A0 Where A= offered traffic A0 = carried traffic A-A0= lost traffic
Description : The pavement width of a road depends upon (A) Terrain (B) Type of traffic (C) Number of lanes (D) All the above
Description : The width of pavement in addition to a gravelled berm 1 m on either side for a two directional traffic recommended by Nagpur Conference of Chief Engineers, is (A) 4.7 m (B) 5.7 m (C) 6.7 m (D) 7.7 m
Description : Concrete pavement is provided if daily traffic per lane exceeds (A) 500 tonnes (B) 750 tonnes (C) 1000 tonnes (D) 1250 tonnes
Description : Discuss the causes of failure in flexible and rigid pavement.
Last Answer : Causes of failure in flexible pavement: The following are the causes of failure in flexible pavement: 1) Ineffective road surface drainage system such as, (i) inadequate cross slope of the ... joints or even non-uniform settlement of the pavement slabs resulting in deterioration in riding quality.
Description : When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when (A) The centre of gravity of the load system is midway between the centre of ... the centre of span and the centre of gravity of the load system (D) None of the above
Last Answer : (B) The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration
Description : The maximum bending moment due to a train of wheel loads on a simply supported girder (A) Always occurs at centre of span (B) Always occurs under a wheel load (C) Never occurs under a wheel load (D) None of the above
Last Answer : (B) Always occurs under a wheel load
Description : Grillage foundation (A) Is used to transfer heavy structural loads from steel columns to a soil having low bearing capacity (B) Is light and economical (C) Does not require deep cutting as the required base area with required pressure intensity is obtained at a shallow depth (D) All the above
Description : For the design of cement concrete pavement for corner loading, Indian Road Congress recommends the use of (A) Westergaard's formula (B) Kelly's formula (C) Goldbeck's formula (D) Picker's formula
Description : 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 (A) 1 in 40 (B) 1 in 50 (C) 1 in 60 (D) 1 in 70
Description : Which of the following is not recommended by ASME B31.3 when assembling gray cast iron flanges? a) Use high strength bolting at all times. b) Carefully align the flanges. c) Carefully control bolt torque. d) Ensure piping loads transmitted to the flanges are within design conditions.
Last Answer : a) Use high strength bolting at all times.
Description : What is the speed of a wheel when/where it touches the pavement?
Last Answer : answer:120 mph with respect to the road. From inside the car you see the wheel’s bottom going 60 mph backward and its top going 60 mph forward.
Description : Why Are Separation Membranes Used Between Concrete Pavement Slab And Sub-base?
Last Answer : Answer : The purpose of separation membrane between the concrete pavement slab and the sub-base are as follows: The separation membrane reduces the frictional forces between the concrete slabs and ... of it. A good example of a separation membranes is polythene sheeting which is commonly used.
Description : A four wheel truck or whose operating weight is 12000 kg is pulled along a road having a rising slope of 2% at a uniform speed. Assume grade resistance factor = 10 kg/tonne. The tension in the tow cable is 720 kg. The ... will be (A) 20 kg/tonne (B) 30 kg/tonne (C) 40 kg/tonne (D) 50 kg/tonne
Last Answer : (C) 40 kg/tonne
Description : Columns of given length, cross-section and material have different values of buckling loads for different end conditions. The strongest column is one whose (A) One end is fixed and other end is hinged (B) Both ... (C) One end is fixed and the other end entirely free (D) Both the ends are fixed
Last Answer : (D) Both the ends are fixed
Description : Select the incorrect from the following. The combinations of loads for serviceability conditions should be [ A ] 1.0 DL + 1.0 LL [ B ] 1.0 DL + 1.0 WL [ C ] 1.0 DL + 0.8 LL + 0.8 WL [ D ] 0.8 DL + 0.8 LL + 0.8 WL
Last Answer : [ D ] 0.8 DL + 0.8 LL + 0.8 WL
Description : Design of flexible pavements is based on (A) Mathematical analysis (B) Empirical formulae (C) A compromise of pure theory and pure empirical formula (D) None of these
Description : The most critical consideration in the design of a rolled steel column carrying axial loads is the (a) Percentage elongation at yield and the net cross-sectional area (b) Critical bending ... at ultimate load (d) Compressive strength based on slenderness ratio and gross cross-sectional area.
Last Answer : (d) Compressive strength based on slenderness ratio and gross cross-sectional area.
Description : A foundation rests on (A) Base of the foundation (B) Sub-grade (C) Foundation soil (D) Both (b) and (c
Description : For a poorly graded sub-grade soil, thickness of sub-base, is (A) 10 cm (B) 15 cm (C) 20 cm (D) 30 cm
Description : If the group index value of sub-grade is between 5 and 9, then the sub-grade is treated as (A) Good (B) Fair (C) Poor (D) Very poor
Description : Roller chains are used for: a)Higher speed and higher loads b)made of high grade steel c)components are harden and polished d)All of the above
Last Answer : d)All of the above
Description : Marketing channel that involves no intermediaries to make their products available to final buyers is classified as A. direct channel B. indirect channel C. flexible channel D. static channel
Last Answer : A. direct channel
Description : Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is A. pt = 3H3p/2 Z5 B. pt = 2H3p/3 Z5 C. pt = 3H3p/2Z5 D. pt = 2 3p/3Z5
Last Answer : ANS: A
Description : A sewer running partially full and hurried with back filled, fails in compression due to A. Weight of the pipe B. Weight of the back fill C. Superimposed traffic loads D. All the above
Last Answer : ANS: D
Description : Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is (A) 0.225 m (B) 0.589 m (C) 1.250 m (D) None of these
Description : Interior thickness of concrete road slab for design wheel load 6300 kg and permissible flexural stress 21 kg/cm2 , is (A) 17.0 cm (B) 25.5 cm (C) 34.0 cm (D) 42.5 cm
Description : 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 (A) 0.500 m (B) 0.589 m (C) 1.089 m (D) 0.089 m
Description : Design shear strength of concrete is a function of i.Percentage of tension steel ii.Grade of concrete iii.Grade of steel [ A ] i and ii [ B ] ii only [ C ] i and iii [ D ] i, ii and iii
Last Answer : [ A ] i and ii
Description : In working stress method of design, permissible compressive bending stress for M20 grade concrete is given by [ A ] 5.0 N/mm2 [ B ] 7.0 N/mm2 [ C ] 10.0 N/mm2 [ D ] 20 N/mm2
Last Answer : [ B ] 7.0 N/mm2