1. Slenderness ratio of a wall does not depend on __________
a) Height of the wall
b) Length of the wall
c) Mass of the wall
d) Thickness of the wall
Explanation: When vertical loads act on a wall, then the strength of the load intensity depends on the slenderness ratio. The slenderness ratio further depends on the length, height and thickness of the wall. It also depends upon the support conditions.
2. Stability problem results when slenderness ratio is more than __________
a) 30
b) 40
c) 50
d) 60
Explanation: The load capacity of a wall is a stability problem when the slenderness ratio is more than 30. It becomes a stress problem when the slenderness ratio is less than 30.
3. The actual thickness of one brick wall in case of modular bricks is __________
a) 18 cm
b) 19 cm
c) 20 cm
d) 21 cm
Explanation: There are two types of bricks used for the construction of brick walls. These are modular bricks and traditional bricks. The thickness can be actual or nominal. The actual thickness of one brick wall in the case of modular bricks is 19 cm.
4.The nominal thickness of one brick wall in case of modular bricks is __________
a) 18 cm
b) 19 cm
c) 20 cm
d) 21 cm
Explanation: The nominal thickness of one brick wall in the case of modular bricks is 20 cm. Nominal thickness includes the thickness of the mortar while actual thickness doesn’t include the thickness of the mortar.
5. Slenderness ratio is inversely proportional to __________
a) Effective height
b) Effective thickness
c) Effective length
d) Effective height and effective thickness
Explanation: Slenderness ratio depends on the effective length or height and effective thickness. It is directly proportional to the effective length or effective height, whichever is less. And, it is inversely proportional to the effective thickness of the wall.
6.The effective height of a wall is used for computing ________ ratio.
a) Thickness
b) Stress
c) Slenderness
d) Lateral support
Explanation: The effective height of a wall denoted by h, is used to compute the slenderness ratio. It is the ratio of effective height or effective length, whichever is less and the effective thickness of the wall.
7.Effective height of a wall is the function of __________ of the wall.
a) Weight
b) Mass
c) Actual height
d) Thickness
Explanation: The effective height of a wall is the function of the actual height of the wall which is denoted by H. It is also a function the lateral support condition. It is used for computing the slenderness ratio.
8.The effective height of a wall of actual height H, partially restrained at one end and laterally restrained at the other end is __________
a) 0.85H
b) 0.75H
c) 1.00H
d) 1.50H
Explanation: The effective height of a wall of actual height H, partially restrained at one end and laterally restrained at the other end is 0.85H. It includes timber below or above and roof trusses above a reinforced concrete floor.
9. The actual height of the wall represented by H is the height of the wall between the __________ of support.
a) Centers
b) Ends
c) Edges
d) Faces
Explanation: H is the height of the wall which is measured between the centers of support. It is known as the actual height of the wall and is used to determine the effective height of the wall.
10.The effective height of a wall of actual height H, partially restrained at the bottom and having no lateral support at the top is __________
a) 0.85H
b) 0.75H
c) 1.00H
d) 1.50H
Explanation: The effective height of a wall of actual height H partially restrained at the bottom and having no lateral support at the top is 1.50H. This is also true if it has no rotational support at the top.