The Maximum strength attained in concrete in limit state design is generally taken as [ A ] fck [ B ] 0.67 fck [ C ] 0.45 fck [ D ] 0.30 fck

The Maximum strength attained in concrete in limit state design is generally taken as
[ A ] fck
[ B ] 0.67 fck
[ C ] 0.45 fck
[ D ] 0.30 fck
by

1 Answer

Answer :

[ C ] 0.45 fck
by

Related questions

In limit state design of concrete for flexure, the area of stress block is taken as (a) 0.530 fck. Xu (b) 0.446 fck . Xu ( c) 0.420 fck .Xu (d) 0.360 fck . Xu Where fck is characteristic compressive strength of concrete and Xu is the depth of neutral axis from top.

Description : In limit state design of concrete for flexure, the area of stress block is taken as (a) 0.530 fck. Xu (b) 0.446 fck . Xu ( c) 0.420 fck .Xu (d) 0.360 fck . Xu Where fck is characteristic compressive strength of concrete and Xu is the depth of neutral axis from top.

Last Answer : (d) 0.360 fck . Xu

The compression in concrete (fc) at failure is given by [ A ] 0.30 fck [ B ] 0.45 fck [ C ] 0.50 fck [ D ] 0.75 fck

Description : The compression in concrete (fc) at failure is given by [ A ] 0.30 fck [ B ] 0.45 fck [ C ] 0.50 fck [ D ] 0.75 fck

Last Answer : [ B ] 0.45 fck

In a limit state method of design, when shear reinforcement is not provided, the calculated shear stress at the critical section of a slab shall not exceed; [ A ] Ks 0.25 v fck [ B ] ks 0.20 v fck [ C ] ks 0.16 v fck [ D ] ks 0.10 v fck

Description : In a limit state method of design, when shear reinforcement is not provided, the calculated shear stress at the critical section of a slab shall not exceed; [ A ] Ks 0.25 v fck [ B ] ks 0.20 v fck [ C ] ks 0.16 v fck [ D ] ks 0.10 v fck

Last Answer : [ A ] Ks 0.25 v fck

The theoretical stress-strain curve of the concrete in the Limit State design of structures is correspondingly reduced by the factor [ A ] 0.35 [ B ] 0.5 [ C ] 0.67 [ D ] 0.75

Description : The theoretical stress-strain curve of the concrete in the Limit State design of structures is correspondingly reduced by the factor [ A ] 0.35 [ B ] 0.5 [ C ] 0.67 [ D ] 0.75

Last Answer : [ C ] 0.67

The theoretical stress-strain curve of the concrete in the Limit State design of structures is correspondingly reduced by the factor [ A ] 0.35 [ B ] 0.5 [ C ] 0.67 [ D ] 0.75

Description : The theoretical stress-strain curve of the concrete in the Limit State design of structures is correspondingly reduced by the factor [ A ] 0.35 [ B ] 0.5 [ C ] 0.67 [ D ] 0.75

Last Answer : [ C ] 0.67

Partial safety factor for strength of concrete in Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65

Description : Partial safety factor for strength of concrete in Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65

Last Answer : [ C ] 1.5

Partial safety factor for strength of concrete in Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65

Description : Partial safety factor for strength of concrete in Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65

Last Answer : [ C ] 1.5

High strength of concrete requires a water cement ratio of [ A ] 0.10 to 0.15 [ B ] 0.25 to 0.30 [ C ] 0.45 to 0.60 [ D ] 0.75 to 0.90

Description : High strength of concrete requires a water cement ratio of [ A ] 0.10 to 0.15 [ B ] 0.25 to 0.30 [ C ] 0.45 to 0.60 [ D ] 0.75 to 0.90

Last Answer : [ B ] 0.25 to 0.30

The design yield stress of steel according to IS: 4561978 is: (A) 0.37 fy (B) 0.57 fy (C) 0.67 fy (D) 0.87 fy Where fy is the characteristic yield strength of steel

Description : The design yield stress of steel according to IS: 4561978 is: (A) 0.37 fy (B) 0.57 fy (C) 0.67 fy (D) 0.87 fy Where fy is the characteristic yield strength of steel

Last Answer : Answer: Option D

The effective depth of a singly reinforced rectangular beam is 300mm. the section is over-reinforced and the neutral axis is 120mm below the top. If the maximum stress attained by concrete is 5N/mn2 and the modular ratio is 18, then the stress developed in the steel will (a) 130N/mm2 (b) 135N/mm2 (c) 160N/mm2 (d) 180N/mm2

Description : The effective depth of a singly reinforced rectangular beam is 300mm. the section is over-reinforced and the neutral axis is 120mm below the top. If the maximum stress attained by concrete is 5N/mn2 and the modular ratio ... in the steel will (a) 130N/mm2 (b) 135N/mm2 (c) 160N/mm2 (d) 180N/mm2

Last Answer : (b) 135N/mm2

The tensile strength of concrete is given by [ A ] 0.45 vfCK [ B ] 0.60 vfCK [ C ] 0.70 vfCK [ D ] 0.90 vfCK

Description : The tensile strength of concrete is given by [ A ] 0.45 vfCK [ B ] 0.60 vfCK [ C ] 0.70 vfCK [ D ] 0.90 vfCK

Last Answer : [ C ] 0.70 vfCK

Consider the following statements: Percentage of steel for balanced designed of a singly reinforced rectangular section by limit state method depends on (1) Characteristic strength of concrete (2) Yield strength of concrete (3) Modulus of elasticity of steel (4) Geometry of the section. Which of these statements are correct? (a) 2, 3 and 4 (b) 1, 3 and 4 (c) 1, 2 and 4 (d) 1, 2 and 3

Description : Consider the following statements: Percentage of steel for balanced designed of a singly reinforced rectangular section by limit state method depends on (1) Characteristic strength of concrete (2) Yield strength of concrete (3) Modulus of elasticity ... (b) 1, 3 and 4 (c) 1, 2 and 4 (d) 1, 2 and 3

Last Answer : 1,2,4

In Limit state method of design, the factor of safety for concrete and steel respectively are [ A ] 3.00 and 1.80 [ B ] 1.50 and 1.18 [ C ] 1.50 and 1.15 [ D ] 1.50 and 1.50

Description : In Limit state method of design, the factor of safety for concrete and steel respectively are [ A ] 3.00 and 1.80 [ B ] 1.50 and 1.18 [ C ] 1.50 and 1.15 [ D ] 1.50 and 1.50

Last Answer : [ C ] 1.50 and 1.15

Limiting moment of resistance of a singly reinforced section for mild steel is [ A ] Mu = 0.133 fck bd2 [ B ] Mu = 0.138 fck bd2 [ C ] Mu = 0.148 fck bd2 [ D ] Mu = 0.153 fck bd2

Description : Limiting moment of resistance of a singly reinforced section for mild steel is [ A ] Mu = 0.133 fck bd2 [ B ] Mu = 0.138 fck bd2 [ C ] Mu = 0.148 fck bd2 [ D ] Mu = 0.153 fck bd2

Last Answer : [ C ] Mu = 0.148 fck bd2

According to IS: 456-2000 the ultimate moment of resistance of a slab for Fe - 415 HYSD bars is; [ A ] Mu = 0.138 fck bd2 [ B ] Mu = 0.145 fck bd2 [ C ] Mu = 0.152 fck bd2 [ D ] Mu = 0.165 fck bd2

Description : According to IS: 456-2000 the ultimate moment of resistance of a slab for Fe - 415 HYSD bars is; [ A ] Mu = 0.138 fck bd2 [ B ] Mu = 0.145 fck bd2 [ C ] Mu = 0.152 fck bd2 [ D ] Mu = 0.165 fck bd2

Last Answer : [ A ] Mu = 0.138 fck bd2

If the grade of steel is Fe250, then the expression for moment of resistance of a singly reinforced section is [ A ] 0.149 fck bd2 [ B ] 0.138 fck bd2 [ C ] 0.125 fck bd2 [ D ] 0.012 fck bd2

Description : If the grade of steel is Fe250, then the expression for moment of resistance of a singly reinforced section is [ A ] 0.149 fck bd2 [ B ] 0.138 fck bd2 [ C ] 0.125 fck bd2 [ D ] 0.012 fck bd2

Last Answer : [ A ] 0.149 fck bd2

The expression for moment of resistance(Mu) of a singly reinforced section is, if the grade of steel in Fe415 [ A ] 0.149 fck bd2 [ B ] 0.138 fck bd2 [ C ] 0.125 fck bd2 [ D ] 0.0120 fck bd2

Description : The expression for moment of resistance(Mu) of a singly reinforced section is, if the grade of steel in Fe415 [ A ] 0.149 fck bd2 [ B ] 0.138 fck bd2 [ C ] 0.125 fck bd2 [ D ] 0.0120 fck bd2

Last Answer : [ B ] 0.138 fck bd2

If the grade of steel is Fe250, then the expression for moment of resistance of a singly reinforced section is [ A ] 0.149 fck bd2 [ B ] 0.138 fck bd2 [ C ] 0.125 fck bd2 [ D ] 0.012 fck bd2

Description : If the grade of steel is Fe250, then the expression for moment of resistance of a singly reinforced section is [ A ] 0.149 fck bd2 [ B ] 0.138 fck bd2 [ C ] 0.125 fck bd2 [ D ] 0.012 fck bd2

Last Answer : [ A ] 0.149 fck bd2

The expression for moment of resistance(Mu) of a singly reinforced section is, if the grade of steel in Fe415 [ A ] 0.149 fck bd2 [ B ] 0.138 fck bd2 [ C ] 0.125 fck bd2 [ D ] 0.0120 fck bd2

Description : The expression for moment of resistance(Mu) of a singly reinforced section is, if the grade of steel in Fe415 [ A ] 0.149 fck bd2 [ B ] 0.138 fck bd2 [ C ] 0.125 fck bd2 [ D ] 0.0120 fck bd2

Last Answer : [ B ] 0.138 fck bd2

Partial safety factor for strength in steel m Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65

Description : Partial safety factor for strength in steel m Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65

Last Answer : [ A ] 1.15

Partial safety factor for strength in steel m Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65

Description : Partial safety factor for strength in steel m Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65

Last Answer : [ A ] 1.15

The shrinkage strain of concrete is generally taken as [ A ] 0.3 [ B ] 0.03 [ C ] 0.003 [ D ] 0.0003

Description : The shrinkage strain of concrete is generally taken as [ A ] 0.3 [ B ] 0.03 [ C ] 0.003 [ D ] 0.0003

Last Answer : [ D ] 0.0003

In general in the design of a section by limit method, it is assumed that [ A ] the stress in steel to reach its yield limit before concrete failure [ B ] the stress in concrete to reach its permissible limit before to reach yield stress in steel [ C ] stresses in both concrete and steel reach their permissible values simultaneously [ D ] none of the above are correct

Description : In general in the design of a section by limit method, it is assumed that [ A ] the stress in steel to reach its yield limit before concrete failure [ B ] the stress in concrete to ... in both concrete and steel reach their permissible values simultaneously [ D ] none of the above are correct

Last Answer : [ A ] the stress in steel to reach its yield limit before concrete failure

In general in the design of a section by limit method, it is assumed that [ A ] the stress in steel to reach its yield limit before concrete failure [ B ] the stress in concrete to reach its permissible limit before to reach yield stress in steel [ C ] stresses in both concrete and steel reach their permissible values simultaneously [ D ] none of the above are correct

Description : In general in the design of a section by limit method, it is assumed that [ A ] the stress in steel to reach its yield limit before concrete failure [ B ] the stress in concrete to ... in both concrete and steel reach their permissible values simultaneously [ D ] none of the above are correct

Last Answer : [ A ] the stress in steel to reach its yield limit before concrete failure

In moderate exposure , the allowable crack width at the surface of concrete should be [ A ] 0.20 mm [ B ] 0.30 mm [ C ] 0.45 mm [ D ] 0.55 mm

Description : In moderate exposure , the allowable crack width at the surface of concrete should be [ A ] 0.20 mm [ B ] 0.30 mm [ C ] 0.45 mm [ D ] 0.55 mm

Last Answer : [ A ] 0.20 mm

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

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

Select the incorrect statement from the following In eccentrically loaded columns, [ A ] The tensile strength of concrete is ignored [ B ] Design stress – strain curve for steel in compression is the same as in tension [ C ] The strain at different points in the section will be same [ D ] Plane section remain plane even after bending

Description : Select the incorrect statement from the following In eccentrically loaded columns, [ A ] The tensile strength of concrete is ignored [ B ] Design stress - strain curve for steel in compression is the ... different points in the section will be same [ D ] Plane section remain plane even after bending

Last Answer : [ C ] The strain at different points in the section will be same

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

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

Pick up the correct statement from the following: (A) Plastics have generally low melting point (B) The coefficient of thermal expansion of plastics is about three times than that of steel (C) The acoustical boards prepared by impregnating fibre-glass with phenolic resins has absorption coefficient of about 0.67 (D) All the above

Description : Pick up the correct statement from the following: (A) Plastics have generally low melting point (B) The coefficient of thermal expansion of plastics is about three times than that of steel (C) ... fibre-glass with phenolic resins has absorption coefficient of about 0.67 (D) All the above

Last Answer : Answer: Option D

The weight of reinforced concrete, is generally taken as (A) 2200 kg/m3 (B) 2300 kg/m3 (C) 2400 kg/m3 (D) 2500 kg/m

Description : The weight of reinforced concrete, is generally taken as (A) 2200 kg/m3 (B) 2300 kg/m3 (C) 2400 kg/m3 (D) 2500 kg/m

Last Answer : Answer: Option C

A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is (A) 30 (B) 35 (C) 40 (D) 45

Description : A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one- ... beam, the number of shear stirrups required, is (A) 30 (B) 35 (C) 40 (D) 45

Last Answer : Answer: Option C

The aggregate impact value of the aggregate used in (A) Building concrete is less than 45 (B) Road pavement concrete is less than 30 (C) Runway concrete is less than 30 (D) All the above

Description : The aggregate impact value of the aggregate used in (A) Building concrete is less than 45 (B) Road pavement concrete is less than 30 (C) Runway concrete is less than 30 (D) All the above

Last Answer : Answer: Option D

Nominal cover for M30 grade concrete in moderate exposure is (as per IS:456-2000) [ A ] 20 mm [ B ] 30 mm [ C ] 45 mm [ D ] 50 mm

Description : Nominal cover for M30 grade concrete in moderate exposure is (as per IS:456-2000) [ A ] 20 mm [ B ] 30 mm [ C ] 45 mm [ D ] 50 mm

Last Answer : [ B ] 30 mm

Nominal cover for M30 grade concrete in moderate exposure is (as per IS:456-2000) [ A ] 20 mm [ B ] 30 mm [ C ] 45 mm [ D ] 50 mm

Description : Nominal cover for M30 grade concrete in moderate exposure is (as per IS:456-2000) [ A ] 20 mm [ B ] 30 mm [ C ] 45 mm [ D ] 50 mm

Last Answer : [ B ] 30 mm

In Limit state design, the maximum working load that the structure has to withstand is called [ A ] Service load [ B ] Factored load [ C ] Characteristic load [ D ] Ultimate load

Description : In Limit state design, the maximum working load that the structure has to withstand is called [ A ] Service load [ B ] Factored load [ C ] Characteristic load [ D ] Ultimate load

Last Answer : [ C ] Characteristic load

In Limit state design, the maximum working load that the structure has to withstand is called [ A ] Service load [ B ] Factored load [ C ] Characteristic load [ D ] Ultimate load

Description : In Limit state design, the maximum working load that the structure has to withstand is called [ A ] Service load [ B ] Factored load [ C ] Characteristic load [ D ] Ultimate load

Last Answer : [ C ] Characteristic load

The removal of excess air after placing concrete helps in increasing the strength of concrete by (a) 15 to 20% (b) 20 to 30% (c) 30 to 50% (d) 50 to 70%

Description : The removal of excess air after placing concrete helps in increasing the strength of concrete by (a) 15 to 20% (b) 20 to 30% (c) 30 to 50% (d) 50 to 70%

Last Answer : (a) 15 to 20%

On concrete roads, the camber generally provided, is (A) 1 in 20 to 1 in 24 (B) 1 in 30 to 1 in 48 (C) 1 in 36 to 1 in 48 (D) 1 in 60 to 1 in 72

Description : On concrete roads, the camber generally provided, is (A) 1 in 20 to 1 in 24 (B) 1 in 30 to 1 in 48 (C) 1 in 36 to 1 in 48 (D) 1 in 60 to 1 in 72

Last Answer : Answer: Option D

The nitrate concentration in domestic water supplies, is generally limited to (A) 10 ppm (B) 15 ppm (C) 30 ppm (D) 45 ppm

Description : The nitrate concentration in domestic water supplies, is generally limited to (A) 10 ppm (B) 15 ppm (C) 30 ppm (D) 45 ppm

Last Answer : (D) 45 ppm

Depth of borings for soil investigation, is generally kept below low water level (A) 30 m (B) 35 m (C) 45 m (D) 40 m

Description : Depth of borings for soil investigation, is generally kept below low water level (A) 30 m (B) 35 m (C) 45 m (D) 40 m

Last Answer : (C) 45 m

The bearing capacity of granite is generally (A) 5 to 10 kg/cm2 (B) 15 to 20 kg/cm2 (C) 30 to 35 kg/cm2 (D) 40 to 45 kg/cm2

Description : The bearing capacity of granite is generally (A) 5 to 10 kg/cm2 (B) 15 to 20 kg/cm2 (C) 30 to 35 kg/cm2 (D) 40 to 45 kg/cm2

Last Answer : Answer: Option C

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

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

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 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

Last Answer : Answer: Option D

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 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

Last Answer : Answer: Option D

The maximum number of steps in a flight should generally be restricted to (A) 10 (B) 12 (C) 15 (D) No limit

Description : The maximum number of steps in a flight should generally be restricted to (A) 10 (B) 12 (C) 15 (D) No limit

Last Answer : Answer: Option B

For wave action in dams, the maximum height of freeboard is generally taken to be equal to (A) 0.5 hw (B) 0.75 hw (C) 1.25 hw (D) 1.50 hw

Description : For wave action in dams, the maximum height of freeboard is generally taken to be equal to (A) 0.5 hw (B) 0.75 hw (C) 1.25 hw (D) 1.50 hw

Last Answer : Answer: Option D

The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel. (A) 0.34 times (B) 0.67 times (C) 0.81 times (D) 0.95 times

Description : The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel. (A) 0.34 times (B) 0.67 times (C) 0.81 times (D) 0.95 times

Last Answer : Answer: Option D

The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel. (A) 0.34 times (B) 0.67 times (C) 0.81 times (D) 0.95 times

Description : The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel. (A) 0.34 times (B) 0.67 times (C) 0.81 times (D) 0.95 times

Last Answer : Answer: Option C

Regarding the working stress design of under reinforced concrete section, (a) The neutral axis depth will be greater than that of a balanced section. (b) The stress in steel intension will reach its maximum permissible value first. (c) The moment of resistance will be less than that of the balanced section. (d) The concrete on the tension side is also be considered for calculating the moment of resistance of the section.

Description : Regarding the working stress design of under reinforced concrete section, (a) The neutral axis depth will be greater than that of a balanced section. (b) The stress in steel intension will reach ... on the tension side is also be considered for calculating the moment of resistance of the section.

Last Answer : both b&c

How much will the length of a 1.0 km section of concrete highway change if the temperature varies from -15˚C in winter to 41˚C in summer?  a. 0.67 m  b. 2.2 m  c. 3.1 m  d. 0.47 m

Description : How much will the length of a 1.0 km section of concrete highway change if the temperature varies from -15˚C in winter to 41˚C in summer?  a. 0.67 m  b. 2.2 m  c. 3.1 m  d. 0.47 m

Last Answer : 0.67 m