FIGURE 1.1 shows the substructure of a structure - NSC Civil Technology Civil Services - Question 1 - 2017 - Paper 1
Question 1
FIGURE 1.1 shows the substructure of a structure. Answer the following questions with regard to the construction in FIGURE 1.1.
1.1.1 What is the minimum measuremen... show full transcript
Worked Solution & Example Answer:FIGURE 1.1 shows the substructure of a structure - NSC Civil Technology Civil Services - Question 1 - 2017 - Paper 1
Step 1
What is the minimum measurement of the damp-proofing above the ground level at 1.1.A?
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Answer
The minimum measurement of the damp-proofing above the ground level at 1.1.A is 150 mm.
Step 2
What is the minimum measurement of the foundation bottom below ground at 1.1.B?
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Answer
The minimum measurement of the foundation bottom below ground at 1.1.B is 150 mm.
Step 3
What is the thickness of the wall construction in FIGURE 1.1?
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Answer
The thickness of the wall construction in FIGURE 1.1 is 220 mm.
Step 4
What type of material is the floor at 1.1.C manufactured from?
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Answer
The floor at 1.1.C is manufactured from concrete.
Step 5
What is part 1.1.D called?
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Part 1.1.D is called a hard core filling.
Step 6
Name TWO purposes of part 1.1.D.
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Solid base for concrete floor.
Give level surface.
Step 7
Briefly motivate why the water table level must be determined when an effective foundation for a structure is planned.
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The water table level must be determined because high water levels can weaken sub-soil and cause foundations to sink. It also helps in preventing water accumulation against the walls.
Step 8
Describe the advantage of holes in clay bricks during the baking process.
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Holes in clay bricks reduce the risk of cracking during the baking process, as they allow for even heat distribution and prevent air pockets from forming.
Step 9
Name THREE properties of face bricks.
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Face bricks are hard.
They are strong.
They do not absorb water.
Step 10
Describe in point form the manufacturing process of clay bricks.
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Clay is dug out and mixed with water.
The mixture is then shaped into bricks.
They are air-dried before firing.
Finally, they are baked in kilns.
Step 11
Briefly describe the method of building door frames into walls.
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Door frames are built into walls by first creating an opening in the wall. The frame is then anchored using ties or bolts, ensuring it is level and securely positioned within the wall.
Step 12
Name parts 1.1.A to 1.1.C.
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1.1.A - Head
1.1.B - Strut
1.1.C - Frame stile
Step 13
What is the measurement of the door opening at 1.1.D?
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The measurement of the door opening at 1.1.D is 813 mm.
Step 14
What is the purpose of the pegs at 1.1.E?
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The pegs at 1.1.E are used to anchor the door frame to the floor, ensuring stability and alignment.
Step 15
Name the tools in FIGURES 1.7.1 to 1.7.3.
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1.7.1 - Plaster trowel
1.7.2 - Belt sander
1.7.3 - Line and pins
