PLATING AND STRUCTURAL STEEL DRAWING N2

T1220(E)(A1)T AUGUST EXAMINATION NATIONAL CERTIFICATE

PLATING AND STRUCTURAL STEEL DRAWING N2

(8090102) 1 August 2014 (Y-Paper)

13:00?17:00

REQUIREMENTS: ONE A2 drawing paper Calculators may be used.

This question paper consists of 4 pages and 2 diagram sheets.

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T1220(E)(A1)T

DEPARTMENT OF HIGHER EDUCATION AND TRAINING REPUBLIC OF SOUTH AFRICA

NATIONAL CERTIFICATE PLATING AND STRUCTURAL STEEL DRAWING N2

TIME: 4 HOURS MARKS: 100

NOTE:

If you answer more than ONE question in SECTION A only the first question will be marked. All work you do not want to be marked must be clearly crossed out.

INSTRUCTIONS AND INFORMATION

1.

Answer ONE question in SECTION A and ALL THREE questions in

SECTION B.

2.

Read ALL the questions carefully.

3.

Number the answers according to the numbering system used in this question

paper.

4.

Do TWO questions on the FRONT and TWO questions of the REVERSE side

of the DRAWING PAPER.

5.

ALL the construction lines must be shown.

6.

Add dimensions to the drawings.

7.

Write neatly and legibly.

8

The diagrams on the sheets are NOT to scale.

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SECTION A (Answer only ONE question in SECTION A.)

QUESTION 1

FIGURE 1, DIAGRAM SHEET 1 (attached) shows a junction between a hexagonal pipe and a round pipe.

1.1

Draw the given views

(3)

1.2

Determine by construction the line of penetration

(5)

1.3

Develop the pattern for the round pipe

(6)

1.4

Develop the shape of the hole in the hexagonal pipe

(6)

Mark allocation for any 2 dimensions

(2)

Mark allocation for line work

(3)

SCALE 1 : 1

[25]

OR

QUESTION 2

FIGURE 2, DIAGRAM SHEET 1 (attached) shows an isometric view of a welded structural connection between a 250 x 250 H-beam and a 250 x 90 channel iron.

Draw a third angle orthographic projection the following:

2.1

The front view in the direction of F

(4)

2.2

The right view in the direction of R

(6)

2.3

The top view in the direction of T

(7)

Mark allocation for line work.

(3)

Mark allocation for printing the title and scale

(2)

Mark allocation for showing the projection symbol

(1)

Mark allocation for any 2 dimensions

(2)

SCALE 1 : 5

[25]

TOTAL SECTION A: 25

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T1220(E)(A1)T

SECTION B (Answer ALL the questions in SECTION B.) QUESTION 3

FIGURE 3, DIAGRAM SHEET 2 (attached) shows a lobster-back bend made of oblique cylinders.

3.1

Draw the given view

(3)

3.2

Develop the pattern for segment A

(8)

3.3

Develop the shape of the pipe at section B?B

(9)

Mark allocation for any 2 dimensions

(2)

Mark allocation for line work.

(3)

SCALE 1 : 10

[25]

QUESTION 4

FIGURE 4, DIAGRAM SHEET 2 (attached) shows TWO views of a hopper.

4.1

Draw the front view

(1)

4.2

Draw the top view

(2)

4.3

Develop the pattern of the plate require to make the hopper.

(17)

Mark allocation for line work

(3)

Mark allocation for any 2 dimensions

(2)

SCALE 1 : 1

[25]

QUESTION 5

FIGURE 5, DIAGRAM SHEET 2 (attached) shows the front view of cylinders and a gusset plate forming a junction.

5.1

Draw the given view

(3)

5.2

Develop the pattern for the gusset plate marked L

(8)

5.3

Develop the pattern for the pipe marked M

(9)

Mark allocation for any 2 dimensions

(2)

Mark allocation for line work

(3)

SCALE 1 : 1

[25]

TOTAL SECTION B: 75 GRAND TOTAL: 100

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DIAGRAM SHEET 1

-5- -1-

Z?Z = JOINT

T1220(E)(A1)T

FIGURE 1

250 ? 250 H-BEAM

250 ? 90 ? 10 CHANNEL IRON

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FIGURE 2

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