Complete the following sentence by filling in the TWO missing accessories for manholes - NSC Civil Technology Civil Services - Question 3 - 2019 - Paper 1
Question 3
Complete the following sentence by filling in the TWO missing accessories for manholes. Write only the word(s) next to the question numbers (3.1.1 to 3.1.2) in the A... show full transcript
Worked Solution & Example Answer:Complete the following sentence by filling in the TWO missing accessories for manholes - NSC Civil Technology Civil Services - Question 3 - 2019 - Paper 1
Step 1
3.1.1 Complete the following sentence by filling in the TWO missing accessories for manholes.
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 accessories used for a manhole are Step irons and Cast iron lid.
Step 2
3.2 Identify A.
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
A is identified as a Wedge.
Step 3
3.2.2 State the depth at which the sides of an excavation in saturated ground will start to cave in.
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
The depth at which the sides of an excavation in saturated ground will start to cave in is 300 mm.
Step 4
3.3.1 Use the drawing and deduce the number of sanitary fixtures needed for this house.
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 number of sanitary fixtures needed for this house is 3.
Step 5
3.3.2 Use the drawing and deduce the number of waste-water fixtures that will be needed for the drainage system.
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
The number of waste-water fixtures that will be needed is 3.
Step 6
3.3.3 Calculate the following: Volume of the tank in m³.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To calculate the volume of the tank in m³, use the formula:
V=limesbimesh
where length (l) = 2.7 m, breadth (b) = 2.7 m, height (h) = 2.7 m.
Thus,
V=2.7imes2.7imes2.7=19.68extm3
Step 7
3.3.3 Calculate the following: Volume of the tank in litres.
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
To convert cubic meters to litres, multiply by 1000:
19.68extm3imes1000=19680extlitres.
Step 8
3.4.1 Attached to the safety harness and lifeline.
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
D-Clip.
Step 9
3.4.2 Helps the worker to move down the lifeline at his/her own pace.
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
Rope grab.
Step 10
3.4.3 Must be worn when working in a deep manhole or confined spaces.
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
Breathing apparatus.
Step 11
3.4.4 Can be used to transfer levels over long distances.
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
Transparent pipe level.
Step 12
3.4.5 When the cover is removed, the area must be cordoned off and warning signs must be posted.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Manhole.
Step 13
3.5 Study the drawing and identify A, B and C.
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
A is the spirit level, B is the long straight edge, and C is the steel peg.
