5.1 Name FOUR machine tools used in the template loft. 5.2 FIGURE 5.2 below shows part of a roof truss. Label parts A–E. 5.3 Draw a neat sketch of a welding symbol indicating the following information on a T-joint done with arc welding: - The fillet weld on the other side is 6 mm in size. - The lengths of the weld beads are 40 mm each and the pitch of the weld is 90 mm. 5.4 Draw the following supplementary weld symbols indicating additional information about the weld: 5.4.1 Weld all round 5.4.2 Flush contour 5.4.3 Machine finish 5.5 A steel ring with an outside diameter of 600 mm must be fabricated from a 30 x 30 mm square bar. Calculate the mean circumference of the required.

NSC Mechanical Technology Welding and Metalwork Use of templates and roof trusses: 5.1 Name FOUR machine tools used

5.1 Name FOUR machine tools used in the template loft - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2022 - Paper 1

Question 5

5.1 Name FOUR machine tools used in the template loft. 5.2 FIGURE 5.2 below shows part of a roof truss. Label parts A–E. 5.3 Draw a neat sketch of a welding symbol... show full transcript

Worked Solution & Example Answer:5.1 Name FOUR machine tools used in the template loft - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2022 - Paper 1

Step 1

5.1 Name FOUR machine tools used in the template loft.

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Answer

Planer
Circular saw
Drilling machine
Jig saw
These tools are essential for shaping and cutting materials in a template loft.

Step 2

5.2 FIGURE 5.2 below shows part of a roof truss. Label parts A–E.

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Answer

A. Purlin
B. Rafter
C. Bracing member
D. Main tie / Tie beam
E. Gusset plate
These labels correspond to the structural components depicted in the roof truss diagram.

Step 3

5.3 Draw a neat sketch of a welding symbol indicating the following information on a T-joint done with arc welding:

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Answer

The welding symbol for a T-joint with the given specifications includes:

A fillet weld of 6 mm on one side.
Weld beads of length 40 mm and a pitch of 90 mm.
The symbol should indicate the arc welding process and dimensions clearly.

Step 4

5.4 Draw the following supplementary weld symbols indicating additional information about the weld:

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Answer

5.4.1 Weld all round - Indicated by a circular symbol around the weld line.
5.4.2 Flush contour - A flat line symbol indicating the flush finish of the weld.
5.4.3 Machine finish - Represented by an 'M' inside the welding symbol box, indicating a machine finish.

Step 5

5.5 A steel ring with an outside diameter of 600 mm must be fabricated from a 30 x 30 mm square bar. Calculate the mean circumference of the required.

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Answer

To calculate the mean circumference:

Mean Outside Diameter, $ext{Mean}ar{Ø} = 600 ext{ mm} - 30 ext{ mm} = 570 ext{ mm}$
Mean Circumference, $C = ext{π} imes ext{Mean}Ø = ext{π} imes 570 ext{ mm} ≈ 1790.71 ext{ mm}$ .
Thus, the mean circumference of the steel ring is approximately 1791 mm.

5.1 Name FOUR machine tools used in the template loft - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2022 - Paper 1

Worked Solution & Example Answer:5.1 Name FOUR machine tools used in the template loft - NSC Mechanical Technology Welding and Metalwork - Question 5 - 2022 - Paper 1

5.1 Name FOUR machine tools used in the template loft.

5.2 FIGURE 5.2 below shows part of a roof truss. Label parts A–E.

5.3 Draw a neat sketch of a welding symbol indicating the following information on a T-joint done with arc welding:

5.4 Draw the following supplementary weld symbols indicating additional information about the weld:

5.5 A steel ring with an outside diameter of 600 mm must be fabricated from a 30 x 30 mm square bar. Calculate the mean circumference of the required.

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