kelantan-skema p2

8/8/2019 Kelantan-Skema P2

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MARKING SCHEME

3764P2 Trial JPN 2010

1 a) Steps to produce Part B1 Measure and mark all the stated length by using steel ruler, L square

and scriber.

2 Mark with centre punch the line of U shape to be drill

3 Mark with centre punch the centre of hole for inner thread to be drill.

4 Clamp the work piece on bench vice

5 Cut all open line by using hacksaw

6 Dril the holes along the baseline of U shape using drill bit 5mm

7 Cut with cold chisel and hammer to remove the scrap in U shape

8 Drill the hole for inner thread using drill bit 10mm

9 Choose the suitable tap size and fit into the wrench.

10 Position the tap on the thread hole vertically and apply pressure.11 Turn the wrench clockwise and anti-clockwise 180 , drift the cutting

fluid while turning process

12 Continue turning process until the tap reach to the bottom.

13 Change the tapper tap to plug tap and repeat steps 11 and 12

14 Chang the plug tap to bottoming tap and repeat steps 11 and 12.

15 Test the thread using actual bolt.

16 Filr all cutting parts/edges using file.

Maximum 10 steps X 1m

Diagram 4 X 1m

Total

1m

1m

1m

1m

1m

1m

1m

1m

1m

1m1m

1m

1m

1m

1m

1m

10m

4m

14m

b) 1. Clean all parts to be joint using sand paper.

2. Clamp the work piece on bench vice

3. Mark the parts to be joint using steel ruler and scriber

4. Place part A on part B and hold them firmly using vice.

5. Prepare completely all welding equipments

6. Light up the welding torch and adjust the flame.

7. Heat up the metal (work piece) and filler metal together,

8. Attach filler metal to the joint part, apply for tapping weld.9. Apply the welding process along the joint parts

10. Let the joint cold down, and knock the slug with welding hammer.

Maximum 6 steps X 1m Total

Grand Total

1m

1m

1m

1m

1m

1m

1m

1m1m

1m

6m

20m

1 Tokngah/10


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3. a)

2 Tokngah/10

2. a) i) Close couple roof / Bumbung gading tertutup 1

ii) A Column / Tiang 1

B Tie joist / Alang Pengikat 1

C Tetulang perabung 1

D Rafter / Kasau 1

5m

b) Langkah pembinaan bumbung atap genting berkait panca.

1. Hamparkan felt /di atas kasau kerangka bumbung/ 1/1

2. Pasangkan kayu beroti/ bersaiz 25mm x 50mm/ dengan memaku

melintang.

Jarak beroti = panjang genting lekap/2

= 420mm 120mm/2

= 360mm

1/1/1

1

1

1

3. Kepingan genting disangkut pada kayu beroti /dan dipaku

/ bermula daripada beroti paling bawah.

Gunakan benang untuk mendapatkan barisan lurus.

1/1/1

1

4. Pada bahagian puncak, genting perabung digunakan /untuk

menutup lubang antara pertemuan dua bahagian bumbung

Mortar simen digunakan/ untuk menutup lubang di antara

kepingan genting dengan perabung.

Jumlah=16 mkh. Ambil maksima 11 mkh shj

1/1

1/1

11m

Diagram = 2 mkh

Label ( maximum 2 ) = 2 mkh

Grand Total

4 m

20 m


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Back sight

Pandangan

Belakang

Intermediate

sight

Pandangan

Antara

Fore sight

Pandangan

Hadapan

Rise

Naik

Fall

Turun

Reduce

level

Aras laras

Chain

Rantaian

Remark

Catatan

0.645 95.850 BA1 =

1.950 1.305 94.545 0 A

1.125 0.825 95.370 20 B

1.200 0.07 95.295 40 C

2.670 1.590 0.390 94.905 60 D

2.345 0.325 95.230 80 E

1.125 1.220 96.450 100 F

0.740 0.385 96.835 120 G

0.845 0.105 96.730 BA2 =

3.315 2.435 2.755 1.87 96.730 Ralat

2.435 1.875 95.850 = 96.73 -

0.880 0.880 0.880 = 0.03m

Back singt, intermediate sight, fore sight = 3 X 1m 3m

Rise and fall = 3 X 1m 3m

Reduced level = 3 X 1m 3m

Arithmetic check = 2 X 1m 2m

Error = 1m 1m

Total 12m

b) Marking

Reduce level = 2 X 1m 2m

Chainage / scale X = 1m 1m

Coordinate = 3 X 1m 3m

Plotting graph (Joining coordinates) = 2 X 1m 2m

Total 12m

Grand Total 20m

3 Tokngah/10


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5. a) Parallel 2m

4 Tokngah/10


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b) To automatically stop the control circuit ( or all circuit) when

overload occur in motors (or each motor) 2m

c)

Maximum 16m

Grand Total 20m

5 Tokngah/10


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6 Tokngah/10

kelantan-skema p2

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