Explanation

• EXTRUDE converts a 2D closed object into a 3D solid or surface.
• It extends the object along the Z-axis.
• It is commonly used to create 3D models from 2D profiles.
• For example, a 2D circle can be extruded to create a 3D cylinder.

Explanation

• The alias of the Object Snap command in AutoCAD is OS .
• Typing OS and pressing Enter opens the Drafting Settings dialog box to manage your running object snaps.

Explanation

Joint venture: Two or more companies form a temporary partnership to pool resources and complete a specific job together.

Additional information

• Subcontracting: One main contractor hires another independent company to do a small part of their project
• Tendering: The process where companies submit competitive price offers (bids) to win a construction contract.
• Negotiation: Direct business discussions between an owner and a contractor to agree on project costs and terms without open bidding.

Explanation

• DPC stands for Damp Proof Course.
• It is a water-resistant layer in a building.
• It prevents moisture from rising through walls.
• It is usually provided near plinth level.

Explanation

• Catch drain: Built high up on the hill slope to intercept rainwater before it reaches the road.

Additional information 

• Side drain: Located directly at the edge of the pavement to collect water from the road surface
• Cross drain: Structures like culverts that carry water across and underneath the width of the road.
• Valley drain: Channels used to drain low points where two sloping terrains intersect.

Explanation

• Dedicated tracks: Metrobus (Bus Rapid Transit) systems run on their own separate lanes, allowing them to bypass regular road traffic.
• Time savings: This separation results in higher speeds and predictable schedules, significantly shortening commute times for passengers.

Explanation

• Branch lines: These use smaller pipes (under 0.6 m) which clog easily, requiring closer spacing for cleaning tools.

Additional information:

• Standard codes: Civil engineering guidelines recommend spacing between 30 m and 75 m for small pipes, making 50–100 m the best fit.
• Larger pipes: Spacing increases up to 300 m only for very large sewers that humans or heavy machines can enter.

Explanation

Direct Pumping System — Short Points

• Treated water is directly pumped into distribution mains.
• No elevated/high-level reservoir is used.
• Suitable for small water supplies.
• Best for low-population areas.
• Not suitable for large communities due to lack of reserve storage.

Explanation

• Waste stack: The specific term for a vertical main pipe conveying wastewater from sinks, showers, and baths.

Additional information:

• Soil pipe: Carries human waste containing fecal matter from toilets.
• Vent pipe: Conveys air and gases, not liquid waste
• Drain pipe: A generic term for any pipe carrying water away.

Explanation

• Floor trap: Drains wastewater directly from bathroom and shower floors.

Additional information

• Gully trap: Connects external waste pipes to the main buried sewer lines.
• P-trap: Mounts behind walls under fixtures like sinks and toilets.
• Intercepting trap: Blocks public main sewer gases at the building boundary.