Question: 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________________?

• 1. 0.75 H
• 2. 0.85 H
• 3. 1.0 H
• 4. 1.5 H

Question: Where a structural component or a system is providing lateral support to five or more walls or columns, the lateral load to be resisted may be taken as_______________?

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

Question: 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_________________?

• 1. 0
• 2. between 0 and 1
• 3. 1
• 4. greater than 1

Question: A good blast with a good yield is obtained if the cut hole is___________________?

• 1. normal to face
• 2. inclined at 45° to the face
• 3. inclined at 15° to the face
• 4. inclined at 30° to the face

Question: Drifters can be used to drill_________________?

• 1. only up holes
• 2. only down holes
• 3. horizontal or up holes
• 4. horizor„al, down or up holes

Question: The correct sequence of drilling equipment for increasing size of holes in tunnels is________________?

• 1. wagon drill, churn drill, shot drill
• 2. wagon drill, shot drill, churn drill
• 3. shot drill, churn drill, wagon drill
• 4. churn drill, wagon drill, shot drill

Question: In compressed air tunneling, the volume of free air provided is______________?

• 1. 6 mJ per second per m2 of face area
• 2. 6 m3 per minute per m2 of face area
• 3. 20 m3 per minute per m2 of face area
• 4. 6 m3 per hour per m2 of face area

Question: Which of the following lining material is useful for shield driven tunnels in sub aqueous regions ?

• 1. stone masonry
• 2. timber
• 3. cast iron
• 4. cement concrete

Question: Which one of the following tunnelling methods is used for laying under ground sewers ?

• 1. Needle beam method
• 2. Army method
• 3. German method
• 4. Italian method

Question: The most suitable soil for compressed air tunneling is________________?

• 1. silt
• 2. sand
• 3. clay
• 4. gravel