FIGURE 6.1 below shows a sectional view of the eave of a roof - NSC Civil Technology Civil Services - Question 6 - 2016 - Paper 1
Question 6
FIGURE 6.1 below shows a sectional view of the eave of a roof. Study the drawing and complete the table on ANSWER SHEET 6.1.
FIGURE 6.2 below shows the incomplete f... show full transcript
Worked Solution & Example Answer:FIGURE 6.1 below shows a sectional view of the eave of a roof - NSC Civil Technology Civil Services - Question 6 - 2016 - Paper 1
Step 1
Identify the type of eave construction used in the drawing.
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Answer
The type of eave construction shown in the drawing is 'Open/exposed eave'.
Step 2
State the minimum pitch (slope) of number 1.
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Answer
The minimum pitch of the roof is 10°.
Step 3
Draw the drawing symbol for number 3.
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Answer
The drawing symbol for the window is represented as a rectangle with an opening, which is 114 mm x 38 mm.
Step 4
Name the colouring coding for number 3.
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The colouring coding for number 3 is 'Red'.
Step 5
Explain the purpose of number 4.
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Answer
The purpose of the fascia board is to spread the load of the roof evenly onto the supporting walls of the building.
Step 6
State the standard dimension of number 5.
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The standard dimension for number 5 is 50 mm x 76 mm.
Step 7
State the centre-to-centre spacing for number 5.
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Answer
The centre-to-centre spacing for number 5 is 900 mm to 1 200 mm.
Step 8
As a draughtsman, recommend a suitable roof truss for a building with a span of 4 metres.
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Answer
I recommend using a King post roof truss, suitable for spans up to 4 metres.
Step 9
State the width of the wall indicated by number 6.
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The width of the wall indicated by number 6 is 110 mm.
Step 10
Draw the top view of the layout of a gable roof for the proposed building indicated in the answer column.
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Answer
The top view of the gable roof layout should depict a triangular shape with the appropriate lengths as per the specifications given.
