1. What is the value of average wind pressure (in psf) for height more than 100ft which is generally adopted?
a) 10
b) 20
c) 30
d) 40
Explanation: 20psf for 0-100 and 30psf for ht. > 100ft.
2. In which type of roofs are scuppers used?
a) Large area
b) Small area
c) Large width
d) Small width
Explanation: Scuppers are holes which are used to drain out extra clogged rain water.
3. In which of the following cases is ASCE procedure not applied?
a) Enclosed structure
b) Regular shape grid
c) High rise structure
d) Roof with 60 ft. height
Explanation: This method is applied in low rise structures along with enclosed, regular shaped and that with s roof height <=60ft.
4. What will be the wind pressure (ps) if adjustment factor (λ) is 2, importance factor is 5, while ps30 is 80N/m2?
a) 600 N/m2
b) 700 N/m2
c) 800 N/m2
d) 900 N/m2
Explanation: ps = λIps30.
5. What will be the velocity pressure at a height of 80ft. if k80 = 0.5, k80t = 1.2, kd = 1.3, V = 120mph and I = 1.67?
a) 45.019
b) 46.019
c) 47.019
d) 48.019
Explanation: qz = 0.00256 kz kzt kd v2I, where qz is wind pressure at height z.
6. Seismic loads are directly proportional to the exposed area of the building.
a) True
b) False
Explanation: Instead, seismic load is proportional to the distribution of mass of the building above the considered level.
7. Which types of forces are generated during earthquake?
a) Vertical shear
b) Horizontal shear
c) Bending moment
d) Combination of horizontal and vertical shear
Explanation: Ground is displaced and ground is subjected to sudden movements. This causes differential movements in building leading to horizontal shear.
8. What will be the static lateral force at 10th level of a structure if total gravity load is x and portion assigned to the 10th level is 10%
a) x
b) 0.1x
c) 0.01x
d) 0.001x
Explanation: Fx = 0.01wx.
9. The fundamental natural period of a building is independent of the mass of the structure.
a) True
b) False
Explanation: The fundamental natural period of a building is dependent upon mass and stiffness of the structure.
10. Calculate the fundamental natural period of a building made with reinforced concrete moment frames and with the height of highest level as 50ft.
a) 0.676
b) 0.686
c) 0.696
d) 0.666
Explanation: Ta = Ct hnx, Ct = 0.02, x = 0.9.