Question: If the loaded length of span in meters of a railway steel bridge carrying a single track is 6 m, then impact factor is taken as_________________?

• 1. 0
• 2. 0.5
• 3. between 0.5 and 1.0
• 4. 1.0

Question: The diameter of base of conical flare of a steel stack is_____________________?

• 1. less than d
• 2. equal to d
• 3. more than d
• 4. any of the above

Question: The capacity of the smallest pressed steel tank is__________________?

• 1. 1000 litre
• 2. 1650 litre
• 3. 1950 litre
• 4. 2450 litre

Question: Steel tanks are mainly designed for_______________________?

• 1. weight of tank
• 2. wind pressure
• 3. water pressure
• 4. earthquake forces

Question: Minimum pitch provided in riveted steel tanks is________________?

• 1. 1.5 d
• 2. 2.0 d
• 3. 2.5 d
• 4. 3.0 d

Question: As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided into_____________________?

• 1. 4 zones
• 2. 5 zones
• 3. 6 zones
• 4. 7 zones

Question: The external wind pressure acting on a roof depends on__________________?

• 1. degree of permeability of roof
• 2. slope of roof
• 3. both (A) and (B)
• 4. none of the above

Question: The basic wind speed is specified at a height ‘h’ above mean ground level in an open terrain. The value of’h’ is__________________?

• 1. 10 m
• 2. 20 m
• 3. 25 m
• 4. 50 m

Question: The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as_______________?

• 1. 0.65 kN/m2
• 2. 0.75 kN/m2
• 3. 1.35 kN/m2
• 4. 1.50 kN/m2

Question: To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be_______________?

• 1. 1
• 2. 2
• 3. 3
• 4. 4