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
1.1.1 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
1.1.2 What is the minimum measurement of the foundation bottom below ground at 1.1.B?
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The minimum measurement of the foundation bottom below ground at 1.1.B is 150 mm.
Step 3
1.1.3 What is the thickness of the wall construction in FIGURE 1.1?
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The thickness of the wall construction in FIGURE 1.1 is 220 mm.
Step 4
1.1.4 What type of material is the floor at 1.1.C manufactured from?
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The floor at 1.1.C is manufactured from concrete.
Step 5
1.1.5 What is part 1.1.D called?
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Part 1.1.D is called hardcore filling.
Step 6
1.1.6 Name TWO purposes of part 1.1.D.
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It acts as a solid base for the concrete floor.
It provides a level surface.
Step 7
1.2 Briefly motivate why the water table level must be determined when an effective foundation for a structure is planned.
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Determining the water table level is essential to avoid sinking of sub-soil and foundations. High water levels can lead to damp issues, affecting the overall stability and durability of the structure.
Step 8
1.3 Describe the advantage of holes in clay bricks during the baking process.
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Holes in clay bricks allow for even heat distribution during baking, preventing cracking. This practice also enables steam to escape, ensuring the brick achieves the desired strength.
Step 9
1.4 Name THREE properties of face bricks.
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Face bricks are hard and durable.
They are strong and can withstand external pressures.
They do not absorb water easily.
Step 10
1.5 Describe in point form the manufacturing process of clay bricks.
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Clay is extracted and shaped into bricks.
The bricks are air-dried.
They are then fired in a kiln at high temperatures.
Finally, they are cooled and can be used for construction.
Step 11
1.6.1 Briefly describe the method of building door frames into walls.
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Door frames are built into walls by first creating openings in the wall structure. The frame is then fixed into this opening, ensuring it is level and aligned before securing it with fastening methods.
Step 12
1.6.2 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
1.6.3 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
1.6.4 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, providing stability and ensuring that the frame maintains its position.
Step 15
1.7 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
