8/31/26, 3:13 PM Quiz: Building Materials and Construction Methods: ENGV380: Project and Construction Management (B03)
Quiz: Building Materials and Construction
Methods
Due Jul 6 at 11:59pm
Points 30
Questions 5
Time Limit 60 Minutes
This quiz is no longer available as the course has been concluded.
Attempt History
Attempt Time Score
LATEST Attempt 1 12 minutes 30 out of 30
(@ Correct answers are hidden.
Score for this quiz: 30 out of 30
Submitted Jun 30 at 9:06pm
This attempt took 12 minutes.
Question 1
6/ 6 pts
What is the water / cement ratio? What is its significance?
Your Answer:
What is the water/cement ratio?
It is the weight of water divided by the weight of cement:
wies Wéaidphiod foenantent
Example: 300 Ib water + 600 Ib cement = 0.50
What is its significance?
e Lower w/c (e.g., 0.45) = stronger, denser, more durable concrete (fewer voids).
* Higher w/c (e.g., 0.55) = weaker, more permeable, less durable concrete (more voids).
Math proof: Adding just 30 Ib of water changes 300/600 (0.50) to 330/600 (0.55), which reduces
strength and durability.
Bottom line: It is the most important factor controlling concrete strength and durability. Keep it as
low as possible while still allowing proper placement.
https://canvas.liberty.edu/courses/1026043/quizzes/4769855?module_item_id=105618545 1/4
Quiz: Building Materials and Construction
Methods
Due Jul 6 at 11:59pm
Points 30
Questions 5
Time Limit 60 Minutes
This quiz is no longer available as the course has been concluded.
Attempt History
Attempt Time Score
LATEST Attempt 1 12 minutes 30 out of 30
(@ Correct answers are hidden.
Score for this quiz: 30 out of 30
Submitted Jun 30 at 9:06pm
This attempt took 12 minutes.
Question 1
6/ 6 pts
What is the water / cement ratio? What is its significance?
Your Answer:
What is the water/cement ratio?
It is the weight of water divided by the weight of cement:
wies Wéaidphiod foenantent
Example: 300 Ib water + 600 Ib cement = 0.50
What is its significance?
e Lower w/c (e.g., 0.45) = stronger, denser, more durable concrete (fewer voids).
* Higher w/c (e.g., 0.55) = weaker, more permeable, less durable concrete (more voids).
Math proof: Adding just 30 Ib of water changes 300/600 (0.50) to 330/600 (0.55), which reduces
strength and durability.
Bottom line: It is the most important factor controlling concrete strength and durability. Keep it as
low as possible while still allowing proper placement.
https://canvas.liberty.edu/courses/1026043/quizzes/4769855?module_item_id=105618545 1/4
