If the horizontal cross-sectional area of a wall is 1200 cm2, then the basic stress shall be multiplied by a reduction factor equal to________________?

Related Mcqs:

1. In the case of panel wall subjected to horizontal loads at right angles to the plane of the wall, with the mortar not leaner than Ml type, tensile stress in bending in the vertical direction may be allowed to the extent of _______________?

   A. 0.4 kg/cm2
   B. 0.7 kg/cm2
   C. 1.0 kg/cm2
   D. 1.2 kg/cm2

2. Assertion A : Limiting value of slenderness ratio for a column is less than that of a wall. Reason R : A column can buckle around either of the two horizontal axes while a wall can buckle around only one axis.

   Select your answer according to the codes given below.
   A. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true but R is not the correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true.

3. A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear height between RCC slabs at top and bottom. The slenderness ratio of the wall is________________?

   A. 15
   B. 19
   C. 20
   D. 25

4. A 200 mm thick brick masonry wall made of modular bricks carries an axial load of 30 kN/m from wall above and an eccentric load of 20 kN/m from RCC floor acting at a distance of 47.5 mm from the centre line of the wall. The resultant eccentricity ratio is A. B. C. D. ?

   A.090
   B.095
   C.100
   D.105

5. If H is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be________________?

   A. 0.75 H
   B. 0.85 H
   C. 1.0 H
   D. 1.5 H

6. The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor of_________________?

   A. 1.2
   B. 1.4
   C. 1.6
   D. 2.0

7. For masonry built in 1:1:6 cement-lime-sand mix mortar or equivalent, the horizontal shear stress permissible on the area of a mortar bed joint is_______________?

   A. 0.15 MPa
   B. 0.125 MPa
   C. 0.1 MPa
   D. 0.075 MPa

8. A free standing brick wall 20 cm thick is subjected to a wind pressure of 75kg/m2. The maximum height of wall from stability consideration is___________________?

   A. 0.64 m
   B. 0.96 m
   C. 1.28 m
   D. 1.5 m

9. The timber floor not spanning on the masonry wall but properly anchored to the wall gives________________?

   A. lateral restraint but not rotational restraint
   B. rotational restraint but not lateral restraint
   C. both lateral and rotational restraints
   D. neither lateral nor rotational restraint

10. If the ratio of center to center spacing of intersecting walls to actual thickness of intersecting wall is more than 20, then the stiffening coefficient for wall proper will be_________________?

    A. 0
    B. between 0 and 1
    C. 1
    D. greater than 1