Download - Kelantan-Skema P2
-
8/8/2019 Kelantan-Skema P2
1/6
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
-
8/8/2019 Kelantan-Skema P2
2/6
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
-
8/8/2019 Kelantan-Skema P2
3/6
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
-
8/8/2019 Kelantan-Skema P2
4/6
5. a) Parallel 2m
4 Tokngah/10
-
8/8/2019 Kelantan-Skema P2
5/6
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
-
8/8/2019 Kelantan-Skema P2
6/6
6 Tokngah/10