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 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 constructed from concrete.
Step 5
What is part 1.1.D called?
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Answer
Part 1.1.D is referred to as a hard core filling.
Step 6
Name TWO purposes of part 1.1.D.
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Solid base for concrete floor.
To provide a 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 to ensure the foundation does not weaken due to potential water erosion or affect stability. If the water table is too high, it might lead to water accumulation and structural issues.
Step 8
Describe the advantage of holes in clay bricks during the baking process.
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The advantage of holes in clay bricks during the baking process is that they allow heat to penetrate through the brick, ensuring even drying and reducing the risk of cracks.
Step 9
Name THREE properties of face bricks.
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Hard
Strong
Does not absorb water
Step 10
Describe in point form the manufacturing process of clay bricks.
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Clay / scale / brick soil are dug out.
Ground and mixed with water.
Cast in moulds.
Dried.
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 ensuring proper alignment and level. The frame is then secured with anchors or ties to the surrounding structure, ensuring stability.
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 frame to the floor, ensuring stability and proper positioning.
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
