Description : In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength (A) 100 kg/cm2 (B) 200 kg/cm2 (C) 300 kg/cm2 (D) 400 kg/cm
Last Answer : Answer: Option D
Description : The minimum quantity of cement to be used in controlled concrete is (a) 120kg/cm2 (b) 160 kg/cm2 (c) 220 kg/cm2 (d) 280 kg/cm2
Last Answer : (c) 220 kg/cm2
Description : The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be (A) Between 150 to 300 kg/cm2 (B) Between 350 to 600 kg/cm2 (C) Between 150 to 500 kg/cm2 (D) Below 200 kg/cm2
Description : The minimum cube strength of concrete used for a pre-stressed member, is (A) 50 kg/cm2 (B) 150 kg/cm2 (C) 250 kg/cm2 (D) 350 kg/cm
Description : For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are: (A) 70 litres of sand and 120 litres of aggregates (B) 70 kg of sand and 140 litres of ... C) 105 litres of sand and 140 litres of aggregates (D) 105 litres of sand and 210 litres of aggregates
Description : If 50 kg of fine aggregates and 100 kg of coarse aggregates are mixed in a concrete whose water cement ratio is 0.6, the weight of water required for harsh mix, is (A) 8 kg (B) 10 kg (C) 12 kg (D) 14 kg
Last Answer : Answer: Option C
Description : Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is (A) 28 liters (B) 30 liters (C) 32 liters (D) 34 liters
Description : For a concrete mix 1:3:6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is (A) 10 kg (B) 12 kg (C) 14 kg (D) 16 kg
Description : The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is (A) 51.5 (B) 52.5 (C) 53.5 (D) 54.5
Description : If the average bending stress is 6 kg/cm2 for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is (A) 28 d (B) 38 d (C) 48 d (D) 58 d
Description : If a rectangular beam measuring 10 × 18 × 400 cm carries a uniformly distributed load such that the bending stress developed is 100 kg/cm2 . The intensity of the load per metre length, is (A) 240 kg (B) 250 kg (C) 260 kg (D) 270 kg
Last Answer : (B) 250 kg
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 : For an ordinary Portland cement (A) Residual does not exceed 10% when sieved through IS Sieve No. 9 (B) Soundness varies from 5 to 10 mm (C) Initial setting time is not less than 30 minutes (D) Compressive stress after 7 days, is not less than 175 kg/cm2
Last Answer : (C) Initial setting time is not less than 30 minutes
Description : For M 150 mix concrete, according to I.S. specifications, local bond stress, is (A) 5 kg/cm2 (B) 10 kg/cm2 (C) 15 kg/cm2 (D) 20 kg/cm
Last Answer : Answer: Option B
Description : Pick up the correct statement from the following: (A) The weight of ingredients of concrete mix, is taken in kilograms (B) Water and aggregates are measured in litres (C) 20 bags of cement make one tonne (D) All the above
Description : The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is (A) 1400 kg/cm2 (B) 190 kg/cm2 (C) 260 kg/cm2 (D) 230 kg/cm
Last Answer : Answer: Option A
Description : Permissible compressive strength of M 200 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2
Last Answer : (C) 200 kg/cm2
Description : Permissible compressive strength of M 300 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 300 kg/cm2
Last Answer : (D) 300 kg/cm2
Description : Permissible compressive strength of M 150 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2
Description : Generally the strength of concrete is represented by the crushing stress of concrete cube of size [ A ] 50 mm [ B ] 100 mm [ C ] 150 mm [ D ] 250 mm
Last Answer : [ C ] 150 mm
Description : The approximate ratio between the strength of cement concrete at seven days and 28 days is a) 3/ 4 b) 2/3* c) 1/2 d) 1/3
Last Answer : b) 2/3*
Description : The maximum compressive stress at the top of a beam is 1600 kg/cm2 and the corresponding tensile stress at its bottom is 400 kg/cm2 . If the depth of the beam is 10 cm, the neutral axis from the top, is (A) 2 cm (B) 4 cm (C) 6 cm (D) 8 cm
Last Answer : (D) 8 cm
Description : The difference in the reservoir level and the lowest point of the water mains is 180 m. The expected pressure due to water hammer is 7.5 kg/cm2 in a pressure conduit of diameter 1 m. Assuming the efficiency of the ... , is (A) 10 mm (B) 15 mm (C) 20 mm (D) 25 mm
Last Answer : (C) 20 mm
Description : A steel rod 1 metre long having square cross section is pulled under a tensile load of 8 tonnes. The extension in the rod was 1 mm only. If Esteel = 2 × 106 kg/cm2 , the side of the rod, is (A) 1 cm (B) 1.5 cm (C) 2 cm (D) 2.5 cm
Last Answer : (C) 2 cm
Description : While testing a cast iron beam (2.5 cm × 2.5 cm) in section and a metre long simply supported at the ends failed when a 100 kg weight is applied at the centre. The maximum stress induced is: (A) 960 kg/cm2 (B) 980 kg/cm2 (C) 1000 kg/cm2 (D) 1200 kg/c
Last Answer : (A) 960 kg/cm
Description : Newly constructed pavement with ordinary Portland cement attains its working strength after (A) 7 days (B) 14 days (C) 21 days (D) 28 days
Description : A 8 metre long simply supported rectangular beam which carries a distributed load 45 kg/m. experiences a maximum fibre stress 160 kg/cm2 . If the moment of inertia of the beam is 640 cm4 , the overall depth of the beam is (A) 10 cm (B) 12 cm (C) 15 cm (D) 18 cm
Last Answer : (A) 10 cm
Description : The bulk density of aggregates, is generally expressed as (A) tonnes/cubic metre (B) kg/cubic metre (C) kg/litre (D) g/cm3
Last Answer : (C) kg/litre
Description : According to Water-Cement Ratio Law, the strength of workable plastic concrete (A) Depends upon the amount of water used in the mix (B) Does not depend upon the quality of cement mixed with aggregates (C) Does not depend upon the quantity of cement mixed with aggregates (D) All the above
Description : Workability of concrete mix with low water cement ratio is determined by (A) Tensile strength test (B) Slump test (C) Compaction factor test (D) Flexural strength test
Description : According to the rule of water cement ratio, the strength of concrete wholly depends upon. (a) The quality of cement. (b) The quality of cement mixed with aggregate. (c) The amount of water used in preparation of concrete mix. (d) All of the above
Last Answer : (c) The amount of water used in preparation of concrete mix.
Description : Workability of concrete mix with low water cement ratio is determined by [ A ] Tensile strength test [ B ] Slump cone test [ C ] Compaction factor test [ D ] Flexural strength test
Last Answer : [ C ] Compaction factor test
Description : An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity ... , is (A) 8.3 kg/cm2 (B) 7.6 kg/cm2 (C) 21.5 kg/cm2 (D) 11.4 kg/cm2
Description : The minimum compressive strength of 1st class bricks should be (A) 75 kg/cm2 (B) 90 kg/cm2 (C) 100 kg/cm2 (D) 120 kg/cm2
Description : The minimum compressive strength of 2nd class bricks should be (A) 75 kg/cm2 (B) 90 kg/cm2 (C) 100 kg/cm2 (D) 120 kg/cm
Description : How long will it take for the concrete to achieve 100% of its strength? (A) 7 days (B) 14 days (C) 21 days (D) 28 day
Description : Specified compressive strength of concrete is obtained from cube tests at the end of (A) 3 days (B) 7 days (C) 21 days (D) 28 day
Description : A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10,000 kg, the corresponding maximum shearing stress being 30 kg/cm2 . The depth of the beam is (A) 15 cm (B) 20 cm (C) 25 cm (D) 30 cm
Last Answer : (C) 25 cm
Description : The minimum strength of the mortar used in load bearing brick masonry, is (A) 50 N/cm2 (B) 100 N/cm2 (C) 150 N/cm2 (D) 200 N/cm2
Last Answer : : Option B
Description : Stress may be expressed in Newtons (A) Per millimetre square (N/mm2 ) (B) Per centimetre square (N/cm2 ) (C) Per metre square (N/m2 ) (D) None of these
Last Answer : (A) Per millimetre square (N/mm2 )
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 measurement is made in square metre in case of (A) Cement concrete in foundation (B) R.C.C. structure (C) Hollow concrete block wall (D) None of these
Last Answer : (D) None of these
Description : If w is the weight of water per cubic metre, Q is the discharge in cubic metres per sec and H is the total head, the required water horse power of the pump, is (A) wQH/15 (B) wQH/360 (C) wQH/220 (D) wQH/550
Last Answer : (A) wQH/15
Description : If T and R are the tread and rise of a stair which carries a load w per square metre on slope, the corresponding load per square metre of the horizontal area, is (A) w (R + T)/T (B) w (R² + T²)/T (C) w (R + T)/T (D) w (R/T)
Description : Minimum required water cement ratio for a workable concrete, is (A) 0.30 (B) 0.40 (C) 0.50 (D) 0.60
Description : The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2 /gm. (A) 800 (B) 1600 (C) 4000 (D) 8500
Last Answer : (B) 1600
Description : How many wheelbarrows of aggregate are in 1 cubic metre of concrete?
Last Answer : Feel Free to Answer
Description : One cubit metre of cement weights [ A ] 1000 kg [ B ] 1200 kg [ C ] 1440 kg [ D ] 1600 kg
Last Answer : [ C ] 1440 kg
Description : The strength of concrete after one year as compared to 28 days strength is about (A) 10 to 15% more (B) 15 to 20% more (C) 20 to 25% more (D) 25 to 50% more