Description : The function of an expansion joint in rigid pavements is to (A) Relieve warping stresses (B) Relieve shrinkage stresses (C) Resist stresses due to expansion (D) Allow free expansion
Last Answer : Answer: Option D
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
Description : The maximum spacing of contraction joints in rigid pavements is (A) 2.5 m (B) 3.5 m (C) 4.5 m (D) 5.5 m
Last Answer : Answer: Option C
Description : Plastic bitumen is generally used for (A) Road pavements (B) Expansion joints (C) Crack fillings (D) None to these
Description : The critical combination of stresses for corner region in cement concrete roads is (A) Load stress + warping stress frictional stress (B) Load stress + warping stress + frictional stress (C) Load stress + warping stress (D) Load stress + frictional stress
Description : If At is the area of steel cross-section, t is working stress, L is width of road and W is weight of slab per square metre, the spacing of the tie bars for a longitudinal joint, is (A) (100 At × t)/WL (B) 100 At/tWL (C) (100 WAt × t)/tL (D) 100 WL/At t
Description : If the width of a pavement slab is 7.5 m, thickness 20 cm and working stress 1400 kg/cm2 , spacing of 10 mm tie bars for the longitudinal joint, is (A) 10 cm (B) 20 cm (C) 30 cm (D) 40 cm
Description : In case of cement concrete pavements, pick up the incorrect statement (A) Tractive resistance is low (B) Initial cost of construction is high (C) Initial cost of construction is low (D) Visibility during nights is high
Description : Reinforcement in cement concrete slab of road pavements, is placed (A) Longitudinally (B) Transversely (C) Longitudinally and transversely (D) In the form of welded wire mesh
Description : longitudinal bars and lateral stirrups, is (A) Stress in concrete × area of concrete (B) Stress in steel × area of steel (C) Stress in concrete × area of concrete + Stress in steel × area of steel (D) None of these
Description : The purpose of lateral ties in short R.C. columns is to (a) Increase the load carrying capacity of column (b) Facilitate compaction of concrete (c) Facilitate construction (d) Avoid buckling of longitudinal bars
Last Answer : (d) Avoid buckling of longitudinal bars
Description : The torsion resisting capacity of a given reinforced concrete section. (a) Decreases with decrease in stirrups spacing. (b) Decreases with increase in longitudinal bars. (c) Does not depend upon stirrups and longitudinal steels. (d) Increases with increase in stirrups and longitudinal steels.
Last Answer : (d) Increases with increase in stirrups and longitudinal steels.
Description : The purpose of lateral ties in short reinforced concrete columns is to [ A ] Facilitate construction [ B ] Facilitate compaction of concrete [ C ] Increase the load carrying capacity of the columns [ D ] Avoid buckling of longitudinal bars
Last Answer : [ D ] Avoid buckling of longitudinal bars
Description : Expansion joints are provided if the length of concrete structures exceeds (A) 10 m (B) 15 m (C) 15 m (D) 45 m
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 : To prevent compressive stresses in a rigid concrete pavement, the joint provided, is (A) Expansion joint (B) Contraction joint (C) Hinged joint (D) All the above
Description : The surface where two successive placements of concrete meet, is known as (A) Contraction joint (B) Expansion joint (C) Construction joint (D) Both (a) and (b)
Description : The maximum thickness of expansion joint in rigid pavements is (A) 0 (B) 25 mm (C) 50 mm (D) 100 mm
Last Answer : Answer: Option B
Description : In the reinforced cement concrete structure, the steel reinforcement consists of . (a) Deformed bars (b) Cold twisted bars (c) Mildsteel and medium tensile steel bars (d) All of these
Last Answer : (d) All of these
Description : For road pavements, the cement generally used, is (A) Ordinary Portland cement (B) Rapid hardening cement (C) Low heat cement (D) Blast furnace slag cement
Description : Rapid hardening cement is used (a) Where high early strength is desired (b) Where form work is to be removed as early as possible (c) For construction of road pavements. (d) All of the above
Last Answer : (d) All of the above
Description : For road pavements, the cement generally used, is [ A ] Ordinary Portland cement [ B ] Rapid hardening cement [ C ] Low heat cement [ D ] Blast furnace slag cement
Last Answer : [ A ] Ordinary Portland cement
Description : The formula for calculating the depth of concrete pavements suggested by Gold beck, is (A) d = 3W/ max (B) d W/ max) (C) d W/ max) (D) d W/ max)
Description : Which of the following is considered to be the highest quality construction in the group of black top pavements? (A) Mastic asphalt (B) Sheet asphalt (C) Bituminous carpet (D) Bituminous concrete
Description : The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is (A) Rounded aggregate (B) Irregular aggregate (C) Angular aggregate (D) Flaky aggregat
Last Answer : Answer: Option A
Description : Expanded metal is (A) Manufactured from steel sheets (B) Used for reinforced concrete in road pavements (C) Measured in term of SWM (short way mesh) and LWM (long way mesh) (D) All the above
Description : Repairing by cement pressure grouting can be adopted in case of a) Honey comb concrete b) Hollow masonry, Dormant cracks c) Deep leached mortar joints d) all the above*
Last Answer : d) all the above*
Description : The maximum longitudinal pitch in bolted joints, subjected to tensile forces, wherein t = thickness of the plate and D = diameter of bolt, is (a) 32 D (b) 16 D (c) 32 t (d) 16 t
Last Answer : (d) 16 t
Description : The diameter of longitudinal bars of a column should never be less than (A) 6 mm (B) 8 mm (C) 10 mm (D) 12 mm
Description : If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than (A) 4 mm (B) 5 mm (C) 6 mm (D) 8 mm
Description : The minimum diameter of longitudinal bars in a column is (A) 6 mm (B) 8 mm (C) 12 mm (D) 16 mm
Description : Which of the following statements is incorrect? (A) Minimum cross sectional area of longitudinal reinforcement in a column is 0.8% (B) Spacing of longitudinal bars measured along the periphery of ... (D) The number of longitudinal bars provided in a circular column should not be less than four
Description : Select the incorrect statement from the following [ A ] Reinforcing bars in a column should not be less than 12 mm in diameter [ B ] The number of longitudinal bars in a circular column should not ... The minimum percentage of longitudinal steel in columns should be 0.8% [ D ] None of the above
Last Answer : [ B ] The number of longitudinal bars in a circular column should not exceed four
Description : The Maximum spacing of the longitudinal bars measured long the periphery of the column should be [ A ] 250 mm [ B ] 300 mm [ C ] 400 mm [ D ] 450 mm
Last Answer : [ B ] 300 mm
Description : Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint. (A) Flanged iron (B) Collar (C) Flexible (D) Expansion
Last Answer : Option B
Description : Steel pipe are (A) Suitable for withstanding high internal pressure (B) Connected by riveted or welded joints (C) Generally laid underground and no expansion joint is required (D) Likely to last 100 years under ordinary conditions
Last Answer : (D) Likely to last 100 years under ordinary conditions
Description : Maximum distance between expansion joints in structures as per IS: 456 1978 is (A) 20 m (B) 30 m (C) 45 m (D) 60 m
Last Answer : (C) 45
Description : According to the recommendations of IS : 456-1978, the expansion joints (A) Are provided where plane changes abruptly (B) Are provided to ensure minimum resistance (C) Do not carry reinforcement across them (D) All the above
Description : Pick up the correct statement from the following: (A) Construction joints are necessarily planned for their locations (B) Expansion joints are provided to accommodate thermal expansion (C) Construction joints are provided to control shrinkage cracks (D) All the above
Description : Expansion Joints in masonry walls are provided in wall lengths usater than (A) 10 m (B) 20 m (C) 30 m (D) 40 m
Description : Expansion joints in masonry walls are provided if length exceeds (A) 10 m (B) 20 m (C) 30 m (D) 40 m
Description : The presence of sand in brick earth prevents: (A) Cracking of bricks (B) Shrinkage of bricks (C) Warping of bricks (D) None of these
Description : Excess of silica in brick earth results in (A) Cracking and warping of bricks (B) Loss of cohesion (C) Enhancing the impermeability of bricks (D) None of the above
Description : The knuckle joint is used two joint between the tie bars in roof trusses. A. True B. False
Last Answer : A. True
Description : Why are butt welded joints longitudinal joints ? i. High strength requirements ii. Low strength requirements iii. Low as well as high strength requirements iv. None
Last Answer : i. High strength requirements
Description : If Ac , Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and c are the modular ratio and maximum stress in the configuration of concrete, the strength of column is (A) cAc + m cAsc (B) c (A - Asc) + m cAsc (C) c [A + (m - 1)ASC] (D) All the above
Description : If is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed by a force through its centroidal longitudinal axis, the compressive stress in concrete, is (A) P/A (B) A/P (C) P/2A (D) 2A/P
Description : Pick up the correct statement from the following: (A) Lateral reinforcement in R.C.C. columns is provided to prevent the longitudinal reinforcement from buckling (B) Lateral reinforcement prevents ... Lateral reinforcement stops breaking away of concrete cover, due to buckling (D) All the above
Description : The longitudinal shearing stresses acting on the surface between the steel and concrete are called. (a) Bond stress (b) Tensile stresses (c) Compressive stresses (d) None of these
Last Answer : (a) Bond stress
Description : A concrete block subjected to shear stresses, then the failure may result by [ A ] Diagonal tension [ B ] Longitudinal tension [ C ] Diagonal compression [ D ] None of the above
Last Answer : [ A ] Diagonal tension