250+ TOP MCQs on Types of Structural Loads – 2 and Answers

Structural Analysis Interview Questions and Answers on “Types Of Structural Loads – 2”.

1. Find the value of reduction factor R₂ if F (rise to span ratio in inches) is given to be 5.
a) 0.95
b) 0.96
c) 0.97
d) 0.98
Answer: a
Clarification: R₂ = 1.2 – 0.05F if 4 < F < 12.

2. What will be the value of reduction factor R₁ if value of A_t is given to be 500ft²
a) 0.5
b) 0.6
c) 0.7
d) 0.8
Answer: c
Clarification: R₁ = 1.2-.001A_t if 200ft² < A_t < 600ft².

3. Which type of drainage system will collect the rainwater?
a) Primary
b) Secondary
c) Tertiary
d) Primary and tertiary
Answer: a
Clarification: Primary system will collect the rainwater through surface drains on the roof and direct it to the storm sewers.

4. What will be the rain load (in psf) if d_s is 2 inches and d_h is 1 inches?
a) 5.2
b) 10.4
c) 15.6
d) 20.8
Answer: c
Clarification: R= 5.2(d_s + d_h).

5. Which out of the following is the static head?
a) d_s
b) d_h
c) d_s + d_h
d) d_s – d_h
Answer: a
Clarification: Static head is the depth of water on the undeflected roof up to the inlet of the secondary drainage system when the primary one is blocked.

6. What will be the flow rate (in gallons per minute) if A is 10 ft² and rainfall intensity is 2 inches per hour?
a) 0.208
b) 0.0208
c) 2.08
d) 20.8
Answer: a
Clarification: Q = 0.0104Ai, where I is the intensity of rainfall in inches per hour.

7. 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
Answer: c
Clarification: 20psf for 0-100 and 30psf for ht. > 100ft.

8. In which type of roofs are scuppers used?
a) Large area
b) Small area
c) Large width
d) Small width
Answer: a
Clarification: Scuppers are holes which are used to drain out extra clogged rain water.

9 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
Answer: c
Clarification: This method is applied in low rise structures along with enclosed, regular shaped and that with s roof height <=60ft.

10. What will be the wind pressure (p_s) if adjustment factor (λ) is 2, importance factor is 5, while p_s30 is 80N/m²?
a) 600 N/m²
b) 700 N/m²
c) 800 N/m²
d) 900 N/m²
Answer: c
Clarification: p_s = λIp_s30.

11. What will be the velocity pressure at a height of 80ft. if k₈₀ = 0.5, k_80t = 1.2, k_d = 1.3, V = 120mph and I = 1.67?
a) 45.019
b) 46.019
c) 47.019
d) 48.019
Answer: d
Clarification: q_z = 0.00256 k_z k_zt k_d v²I, where q_z is wind pressure at height z.

Structural Analysis for Interviews,