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How to make waterproof roofing from leaves, bark, or woven - Test
Contributed by: Kay
  • 1. Which type of leaf is generally unsuitable for roofing due to rapid decay?
A) Large, waxy leaves
B) Dry, brittle leaves
C) Soft, thin leaves
D) Needle-like leaves
  • 2. What is the primary purpose of overlapping roofing materials?
A) To prevent water penetration
B) To reduce weight
C) To allow for expansion
D) To add visual appeal
  • 3. What is a common method of securing bark roofing sections?
A) Gluing with sap
B) Using commercial nails
C) Lashing with natural fibers
D) Welding
  • 4. What type of grass is best suited for thatched roofs?
A) Spiky grasses
B) Long, stiff grasses
C) Short, soft grasses
D) Grasses that grow in clumps
  • 5. Which of these factors is most crucial for a durable leaf roof?
A) The time of year leaves are collected
B) Tight packing and secure fastening
C) The color of the leaves
D) The smell of the leaves
  • 6. What natural substance can be used to seal gaps in a bark roof?
A) Clay
B) Gravel
C) Dust
D) Sand
  • 7. Why is it important to dry roofing materials before installation?
A) To make them more flexible
B) To increase their weight
C) To improve their color
D) To prevent rotting and mold
  • 8. What is the recommended roof pitch for a leaf or thatch roof?
A) Slightly sloped (20-30 degrees)
B) Steep (at least 45 degrees)
C) Shallow (less than 15 degrees)
D) Flat (0 degrees)
  • 9. What is the primary function of the roof ridge?
A) To seal the top seam of the roof
B) To provide structural support
C) To collect rainwater
D) To improve ventilation
  • 10. Which of the following tools is essential for thatched roof construction?
A) Thatching needle
B) Screwdriver
C) Welding torch
D) Soldering iron
  • 11. Which of these materials offers the best natural water repellency?
A) Leaves
B) Grass
C) Bark
D) Clay
  • 12. What can be added to grass thatch to prevent insect infestation?
A) Salt
B) Sugar
C) Sand
D) Wood ash
  • 13. How often should a leaf roof be inspected and maintained?
A) Regularly (e.g., every few months)
B) Never
C) Only after heavy storms
D) Every few years
  • 14. What is a wattle and daub structure often used for in conjunction with a natural roof?
A) Foundation
B) Chimney
C) Drainage system
D) Walls
  • 15. What is an important consideration when harvesting bark for roofing?
A) Harvest all the bark from a single tree
B) Harvest sustainably to avoid harming trees
C) Harvest only in the winter
D) Harvest only after the tree is dead
  • 16. Which direction should overlaps face to best shed water?
A) Alternating directions
B) Downwards
C) Upwards
D) Sideways
  • 17. What can be used as an alternative to natural fiber for lashing?
A) Elastic bands
B) Metal wire
C) Thin strips of bark
D) Plastic rope
  • 18. What helps prevent wind uplift on a leaf roof?
A) Bright colors
B) Weight and secure fastening
C) Lightweight materials
D) Gaps for airflow
  • 19. Which of the following can extend the lifespan of a natural roof?
A) Planting trees directly on the roof
B) Rough installation
C) Proper drainage
D) Neglecting repairs
  • 20. What is a key factor when choosing leaves for roofing in a snowy climate?
A) Strength to withstand snow load
B) Bright color to reflect sunlight
C) Sweet smell to attract animals
D) Soft texture for insulation
  • 21. What is the best time of year to harvest grasses for thatching?
A) Winter
B) Any time is fine
C) Late summer or early fall
D) Spring
  • 22. What is the danger of loose thatch or leaf on a roof?
A) Increased insulation
B) Reduced weight
C) Improved aesthetics
D) Fire hazard
  • 23. Why is a smoky fire sometimes built under thatch during construction?
A) To discourage insects
B) To keep the workers warm
C) To help the thatch dry
D) To provide light
  • 24. Which tree's bark is best known for its waterproof qualities?
A) Birch
B) Pine
C) Maple
D) Oak
  • 25. What should be considered when harvesting materials from protected lands?
A) That the forest won't mind
B) That the best materials are always available
C) Regulations and permits
D) That no one is watching
  • 26. What technique can improve water runoff with leaf roofing?
A) Punching holes in the leaves
B) Spreading the leaves out flat
C) Creating a layered, shingled effect
D) Using only one layer of leaves
  • 27. What type of knot is most secure for lashing roofing materials?
A) Slip knot
B) Overhand knot
C) Square knot
D) Granny knot
  • 28. What is an advantage of using natural materials for roofing?
A) Lowest cost
B) Easiest installation
C) Sustainability
D) Highest durability
  • 29. What can be used to create a smoke hole in a thatched roof?
A) Missing thatch
B) Carefully planned opening
C) A window
D) Random hole
  • 30. What is the first step in building a waterproof roof?
A) Buying expensive tools
B) Starting at the top
C) Planning and material gathering
D) Installing flashing
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