   ## RCC Structures Design MCQ Practice Questions (Civil Eng) Set 6

##### As the percentage of steel increases:

Options are :

• Depth of neutral axis decreases
• Lever arm increases
• None of these
• Depth of neutral axis increases
• Lever arm decreases

Answer :Depth of neutral axis increases

Options are :

• 233 cm
• 176 cm
• 255 cm
• 300 cm
• 236 cm

Options are :

• A
• C
• B
• D

Options are :

• 5 mm
• 20 mm
• 15 mm
• 10 mm
• 7.5 mm

##### The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes:

Options are :

• With the perpendicular to. the inclined plane of the soil
• None of these
• With the vertical
• With the horizontal

##### A ribbed slab is provided for:

Options are :

• All the above
• A plain ceiling
• Acoustic insulation
• Thermal insulation

Options are :

• C
• D
• A
• E
• B

##### According to load factor method, the permissible load W on a short column reinforced with longitudinal bars and lateral stirrups, is:

Options are :

• None of these
• Stress in concrete x area of concrete
• Stress in concrete x area of concrete + Stress in steel x area of steel
• Stress in steel x area of steel

Answer :Stress in concrete x area of concrete + Stress in steel x area of steel

Options are :

• D
• B
• C
• A

Options are :

• 30 cm
• 20 cm
• 35 cm
• 25 cm
• 40 cm

##### As per IS : 456, the reinforcement in a column should not be less than:

Options are :

• 0.5% and not more than 5% of cross-sec-tional area
• 0.6% and not more than 6% of cross-see-tional area
• 0.8% and not more than 8% of cross-sectional area
• None of these
• 0.7% and not more than 7% of cross-sec-tional area

Answer :0.8% and not more than 8% of cross-sectional area

Options are :

• 2.5
• 1.5
• 1.0
• 2.0
• 1.25

Options are :

• 6 mm
• 10 mm
• 8 mm
• 12 mm

##### The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stressess simultaneously, is called:

Options are :

• All the above
• Economic section
• Critical section
• Balanced section

##### The zone in which transverse bending is likely to occur may be obtained by drawing a line from the faces of the column making an angle ?� with horizontal where ?� is:

Options are :

• 45�
• 30�
• 60�
• None of these

Options are :

• 100 cm
• 50 cm
• 120 cm
• 75 cm

Options are :

• A
• B
• C
• D

Options are :

• A
• D
• C
• B

##### Pick up the assumption for the design of a prestressed concrete member from the following:

Options are :

• A transverse plane section remains a plane after bending
• During deformation limits, Hook's law is equally applicable to concrete as well as to steel
• All the above
• Variation of stress in reinforcement due to changes in external loading is negligible

##### If P kg/m^(2) is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by:

Options are :

• D = 0.0775 a?P
• D = 0.00775 a?P
• D = 0.775 P?a
• D = 0.07775 a?P

##### A pre-cast pile generally used, is:

Options are :

• Circular
• Octagonal
• Square with corners chamfered
• Square

Options are :

• D
• B
• C
• A

##### On an absolutely rigid foundation base, the pressure will:

Options are :

• Be more at the edges of the foundation
• Not be uniform
• Be uniform
• Be zero at the centre of the foundation

Options are :

• B
• D
• A
• C
• E

##### If the bearing capacity of soil is 10 tonnes/cm^(2) and the projection of plain concrete footing from walls, is a cm, the depth D of footing is:

Options are :

• D = 0.775 a
• D = 0.775?a
• D = 0.0775 a
• D = 0.775 a^(2)

Options are :

• C
• D
• A
• B

Options are :

• 20 cm
• 40 cm
• 35 cm
• 25 cm
• 30 cm

Options are :

• C
• E
• A
• D
• B

Options are :

• C
• D
• B
• A

Options are :

• C
• E
• D
• A
• B