Why some timber can float on water for some time before it sinks?
Dampness in Building

Quiz
•
Other, Education, Science
•
12th Grade - University
•
Hard
Nur Hamizah
Used 5+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Voids are not fully saturated
Solid mass of timber is quite low
Voids are readily filled with water
Solid density of timber is quite high
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the dampness find its way to the floor through the substructure?
Action of rain
Condensation
Exposed tops of walls
Raising moisture from ground
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT an effect of moisture on building materials?
Expansion
Contraction
Efflorescence
Timber damage
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a method of water entering during construction?
Poor site control of storage of materials
Residual water used in nearby settlements
Inadequate protection of partially built structures
Water used for mixing of mortar, concrete and plaster
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is formed when water and glass are in contact?
Meniscus
Hydration
Pores and voids
Cohesion forces
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of following is NOT a measure to prevent rotting of windows and doors?
Use of thicker glass
Use of anti-capillary grooves
Inward opening of external doors
Use of sealant around frame edges
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is NOT a measure to prevent water from penetrating roofs?
Spaces are made bigger between tiles
Adequate ventilation of the roof space
Tiles are curved to reduce capillarity between them
A minimum pitch, usually 35°, to reduce water absorption
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