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English for Building and Construction Engineering

English for Building and Construction Engineering. Unit Five Part One Section B (Ⅱ) Roof Construction. Learning Objectives. After learning this section, you will be able to know more professional words and expressions; know the types of roof;

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English for Building and Construction Engineering

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  1. English for Building and Construction Engineering Unit Five Part One Section B (Ⅱ) Roof Construction

  2. Learning Objectives After learning this section, you will be able to know more professional words and expressions; know the types of roof; explain the advantages and disadvantages of each type; use the correct terminology in the description of roof.

  3. Introduction

  4. There are many types of roofs of different shapes, materials and span.

  5. Types of Roofs What types of roofs are they?

  6. Pitched roof • 35°-40°minimum pitch • Flat roof • Less than 10°pitch

  7. Is flat roof really flat? No. flat roofs actually have a slight slope.

  8. Pitched Roof

  9. Pitched Roof Structure: timber Steel sections

  10. Pitched Roof Roof Coverings corrugated metal tiles plastic sheets slates

  11. corrugated metal corrugated: a.起波纹的 • durable • light weight • weather resistant • recyclable

  12. corrugated metal • Corrugated aluminum roofing • Corrugated steel roofing • Corrugated copper roofing

  13. plastic sheets plastic sheet: 塑料板 • energy efficiency • lower costs in life cycles • flexibility • ease in installation.

  14. tiles clay(黏土） tiles produced by baking molded clay into tile

  15. concrete tiles • mainly made of: • portland cement • sand • water

  16. slates slate: 板岩；石板

  17. Pros • appearance • fire resistance • environmentally friendly Cons • installation • weight • high cost

  18. Pitched Roof Advantages • 1. traditional and aesthetic look. • 2. more efficient in water evacuation • 3. energy-saving

  19. Pitched Roof Disadvantages • 1. high cost of roof construction • 2. no usage of roof surface

  20. Flat Roof Advantages 1.can be used as car-park, playground, garden and so on 2.cost-efficient 3.simpler to be constructed compared with pitched roof

  21. Flat Roof Disadvantages • poorer appearance • not good at disposing of rain water or snow

  22. Leaves collecting and starting to block outlets • Water pooling on a flat roof as a result of a blocked outlet

  23. VS

  24. Thank You

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