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T1090(E)(N14)T NOVEMBER EXAMINATION

NATIONAL CERTIFICATE

PLATING AND STRUCTURAL STEEL DRAWING N1

(8090091) 14 November 2016 (X-Paper)

09:00?13:00

REQUIREMENTS: One A2 drawing sheet Calculators may be used.

This question paper consists of 5 pages and 2 diagram sheets.

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T1090(E)(N14)T

DEPARTMENT OF HIGHER EDUCATION AND TRAINING REPUBLIC OF SOUTH AFRICA

NATIONAL CERTIFICATE PLATING AND STRUCTURAL STEEL DRAWING N1

TIME: 4 HOURS MARKS: 100

INSTRUCTIONS AND INFORMATION

1.

Answer ALL the questions.

2.

Read each question carefully, plan your work and answer only what is

required.

3.

Number the questions according to the numbering system used in this

question paper.

4.

ALL the construction lines MUST be shown.

5.

Add ALL the dimensions and descriptions unless otherwise stated.

6.

Marks will be allocated for neatness.

7.

Only ONE drawing sheet may be used.

8.

Draw on both sides of the drawing sheet.

9.

A 15 mm wide border line must be drawn on both sides of the drawing sheet.

10.

Print neatly and legibly.

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T1090(E)(N14)T

QUESTION 1

FIGURE 1, DIAGRAM SHEET 1 (attached), shows the front view of a solid pentagonal cone with a 60? cut.

Draw, in first-angle orthographic projection, to scale 1 : 2, the following views:

1.1

The front view of the cone

1.2

The top view of the cone

1.3

The true shape of the cut as shown in the direction of arrow A

Use the symbol to indicate the projection.

The completed drawings must clearly indicate all the construction lines. The following title and scale must be printed centrally below the finished drawing:

CONE

SCALE 1 : 2

[15]

QUESTION 2

FIGURE 2, DIAGRAM SHEET 1 (attached), shows an elbow made from two oblique pipes. The elbow will be used as part of a modification to the exhaust pipe of a motorbike.

Draw, to scale 1 : 1, the following views:

2.1

The given view of the elbow

2.2

A view on the arrow A

2.3

The pattern of the plate to manufacture part B of the elbow (the joint of the

pattern must be at X?X)

ALL the construction lines must be clearly indicated on the completed drawing. The following title and scale must be printed centrally below the completed drawing:

OBLIQUE PIPE ELBOW

SCALE 1 : 1

[20]

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T1090(E)(N14)T

QUESTION 3

FIGURE 3, DIAGRAM SHEET 1 (attached), shows the front view of a 45? offset pipe arrangement. The offset pipe is part of the dust-extraction plant of a cigarette manufacturing company.

Draw, to scale 1 : 2, the following views:

3.1

The given views of the offset pipe

3.2

The pattern of the plate to manufacture part A of the offset pipe (the joint of

the pattern must be at X?X)

ALL the construction lines must be clearly indicated on the completed drawing. The following title and scale must be printed centrally below the completed drawing:

OFFSET PIPE

SCALE 1 : 2

[15]

QUESTION 4

FIGURE 4, DIAGRAM SHEET 2 (attached), shows two views of a T-junction between a right cone and a right cylinder. The T-junction will be used as part of the ducting in the ventilation system of a shopping complex.

Draw, to scale 1 : 1, the following views:

4.1

The two given views of the T-junction and show the line of interpenetration

4.2

The pattern of the plate to manufacture the cone (the joint of the pattern must

be at X?X)

ALL the construction lines must be clearly indicated on the completed drawing. The following title and scale must be printed centrally below the completed drawing:

CONE CONNECTION

SCALE 1 : 1

[15]

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