---
title: "Uses of copper"
subject: "Civil Engineering Materials"
chapter: 8
key: "semester_3/civil_engineering_materials:uses-of-copper"
source: https://www.bctengineer.com/q/semester_3/civil_engineering_materials/uses-of-copper
site: BCT Engineering
---

# Uses of copper

Civil Engineering Materials · Chapter 8: Metals and Alloys

- Asked in: 2081 Baisakh (new course), 1 marks
- Video: [Copper use in Building Design and construction](https://www.youtube.com/watch?v=8WXYcBpg9Kc) — Amir Saifuddin
- Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14
- Page: https://www.bctengineer.com/q/semester_3/civil_engineering_materials/uses-of-copper
- Whole chapter: https://www.bctengineer.com/md/semester_3/civil_engineering_materials/chapter-8

## Question

Write down the uses of copper as an engineering material.

## Short answer

Copper is used for electric wires, cables and bus bars due to high conductivity; earthing and lightning conductors; water supply pipes, fittings, roof sheets and flashings for corrosion resistance; heat exchangers and boilers; brass and bronze alloys; and ornamental work.

## Answer

Copper is used for: electric wires, cables and bus bars (high electrical conductivity); earthing and lightning conductors; water supply pipes and fittings, roof sheets and flashings (corrosion resistance); alloys such as brass and bronze; heat exchangers and boilers (high thermal conductivity); and ornamental work.

## Check yourself

The answer's key points as multiple-choice questions, with the correct option and why.

1. Copper is used for electric wires and bus bars mainly because of its:
   A. Low cost
   B. High electrical conductivity
   C. Magnetic nature
   D. High stiffness
   Answer: B. Excellent electrical conductivity makes copper the standard for wires, cables and bus bars. (Key point: Electrical use of copper)

2. Copper is used for water pipes and roof flashings because it:
   A. Rusts quickly
   B. Resists corrosion
   C. Is very light
   D. Is brittle
   Answer: B. Corrosion resistance gives pipes and roof sheets a long life. (Key point: Copper in plumbing and roofing)

3. Which pair of uses is correct for copper?
   A. Making brass and bronze; heat exchangers and boilers
   B. Making stainless steel; insulation
   C. Making cast iron; fire bricks
   D. Making duralumin; paint
   Answer: A. Copper is alloyed to brass and bronze and, with good thermal conductivity, used in heat exchangers and boilers. (Key point: Copper alloys and thermal use)

## Related in Civil Engineering Materials

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