Various options are given as possible answers to the following questions - NSC Civil Technology Construction - Question 6 - 2019 - Paper 1
Question 6
Various options are given as possible answers to the following questions. Choose the answer and write the letter (A–D) next to the question numbers (6.1.1 to 6.1.5) ... show full transcript
Worked Solution & Example Answer:Various options are given as possible answers to the following questions - NSC Civil Technology Construction - Question 6 - 2019 - Paper 1
Step 1
6.1.1 The striking of formwork for a deck depends on the ...
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The striking of formwork is influenced by various factors including the average temperature, thickness of the concrete, and properties of the concrete. Therefore, the correct answer is D: All the above-mentioned.
Step 2
6.1.2 The minimum thickness of a suspended reinforced concrete floor is ...
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The minimum thickness of a suspended reinforced concrete floor commonly recognized in construction is 150 mm. Hence, the correct choice is B: 150 mm.
Step 3
6.1.3 What type of foundation will be used where the site is NOT level?
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
For sites that are uneven or not level, a raft foundation provides a stable base and is able to distribute the load over a larger area. Therefore, the appropriate answer is D: Raft foundation.
Step 4
6.1.4 The internal walls that support a suspended concrete floor must be ...
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The internal walls supporting suspended concrete floors should ideally be vertically aligned with the external walls to ensure proper load distribution. The correct answer is A: vertically in line with the external walls.
Step 5
6.1.5 The minimum cover depth for concrete with reinforcement exposed to soft unpolluted air is ...
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Concrete exposed to soft unpolluted air requires a minimum cover depth of 20 mm to protect the reinforcement. Hence, the correct option is D: 20 mm.
