Weight Calculation
Quan- Section Breadth Thickness Length Den- Weight
Item
tity Type (mm) (mm) (mm) sity (ton)
Keel Plate 1 Plate 1200 12 30000 7.85 3.39
Bottom Plate 1 2 Plate 1500 12 30000 7.85 8.48
Bottom Plate 2 2 Plate 1500 12 30000 7.85 8.48
Bilge Plate 2 Plate 600 12 30000 7.85 3.39
Side Shell Plate 1 2 Plate 1050 8 30000 7.85 3.96
Side Shell Plate 2 2 Plate 1050 8 30000 7.85 3.96
Deck Plate 1 2 Plate 2000 6 30000 7.85 5.65
Deck Plate 2 2 Plate 2000 6 30000 7.85 5.65
Bulkhead 5 Plate 2500 6 8000 7.85 4.71
Center Girder
1 I 250 7 30000 7.85 0.41
(Web)
Center Girder
1 I 80 7 30000 7.85 0.13
(Flange)
Side Girder
4 I 250 7 30000 7.85 1.65
(Web)
Side Girder
4 I 80 7 30000 7.85 0.53
(Flange)
Deck
Longitudinal 4 L 70 6 30000 7.85 0.40
(Web)
Deck
Longitudinal 4 L 60 6 30000 7.85 0.34
(Flange)
Deck Beam 1 I 100 6 8000 7.85 0.04
Main Frame
29 Plate 250 8 13000 7.85 5.92
(Web)
Main Frame
29 Plate 130 8 13000 7.85 3.08
(Flange)
Web Frame
14 Plate 250 8 13000 7.85 2.86
(Web)
Web Frame
14 Plate 130 8 13000 7.85 1.49
(Flange)
Total Weight 64.50
Surface Area Calculation
Length Breadth Area
Item Quantity
(m) (m) (m2)
Bottom Plate 1 23.65 8 189.2
Deck Plate 1 30 8 240
Side Plate 1 2 23.65 2.5 118.25
Side Plate 2 4 3.2 1.25 16
Side Plate 3 4 3.2 1.25 8
Inside Hull 571.45
Total Area 1142.9
Segmented Area Calculation
Segment Area
Deck 240.000
Under Water 256.325
Above Water 75.125
Total 571.450
Cost Estimation
Item Cost (tk) Unit
Plate 115 per kg
Electrode 1200 per packet
Sandblasting 300 per m2 plate
Paint 800 per liter
Labor 100 per manhour
Plate Cost:
Required amount of plate = 64500 kg
Market price of 1 kg of plate = 115 tk
So, cost due to procurement of plate = (64500 × 115) tk
= 74,17,500 tk
Consumable Cost:
Required amount of plate = 64500 kg
1 ton of plate can be welded by using 7 packets of electrode
Market price of each packet of electrode = 1200 tk
Total amount of electrode required = (64.5 × 7) packet
= 451.5 packet
So, consumable cost = (451.5 × 1200) tk
= 5,41,800 tk
Sandblasting Cost:
Surface area of required plate = 1143 m2
Sandblasting of 1 m2 plate costs = 300 tk
So, cost due to sandblasting of plate = (1143 × 300) tk
= 3,42,900 tk
Painting Cost:
Per liter of paint can cover plate surface area = 5 m 2
Market price of 1 L paint = 800 tk
I) Underwater:
Surface area of required plate = 256.325 m2
Paint required for underwater plate = (256.325 / 5) L
= 51.265 L
Cost due to underwater painting for each layer = (51.265 × 800) tk
= 41,012 tk
It requires at least 5 coats of paint in underwater portion
So, cost due to underwater painting = (41012 × 5) tk
= 2,05,060 tk
II) Above-water:
Surface area of required plate = 75.125 m2
Paint required for above-water plate = (75.125 / 5) L
= 15.025 L
Cost due to above-water painting for each layer = (15.025 × 800) tk
= 12,020 tk
It requires at least 3 coats of paint in above-water portion
So, cost due to above-water painting = (12020 × 3) tk
= 36,060 tk
III) Deck:
Surface area of required plate = 240 m 2
Paint required for deck plate = (240 / 5) L
= 48 L
Cost due to deck painting for each layer = (48 × 800) tk
= 38,400 tk
It requires at least 3 coats of paint in deck portion
So, cost due to deck painting = (38400 × 3) tk
= 1,15,200 tk
IV) Inside hull:
Surface area of required plate = 571.45 m2
Paint required for hull plate = (571.45 / 5) L
= 114.29 L
Cost due to inside hull painting for each layer = (114.29 × 800) tk
= 91,432 tk
It requires at least 2 coats of paint in inside hull portion
So, cost due to inside hull painting = (91432 × 2) tk
= 1,82,864 tk
So, total cost due to painting = (205060 + 36060 + 115200 + 182864) tk
= 5,39,184 tk
Labor Cost:
Required amount of plate = 64500 kg
1 ton of plate can be assembled in 200 manhours
Market price of each manhour of work = 100 tk
Total work required = (64.5 × 200) manhour
= 12900 manhour
So, total labor cost = (12900 × 100) tk
= 12,90,000 tk
Overhead Cost:
Net overhead cost = 20,00,000 tk
Mooring Cost:
Net mooring (anchor, chain, shackle) cost = 40,00,000 tk
Transportation Cost:
Net transportation cost = 15,00,000 tk
Installation Cost:
Net installation cost = 15,00,000 tk
Total manufacturing cost = (74,17,500 + 5,41,800 + 3,42,900 + 5,39,184
+ 12,90,000 + 20,00,000 + 40,00,000 + 15,00,000 + 15,00,000) tk
= 1,91,31,384 tk
Net profit = (1,91,31,384 × 10%) tk
= 19,13,138 tk
Value Added Tax (VAT) = (1,91,31,384 × 7.5%) tk
= 14,34,853 tk
Income Tax (IT) = (1,91,31,384 × 5%) tk
= 9,56,569 tk
Total cost = (1,91,31,384 + 19,13,138 + 14,34,853 + 9,56,569) tk
= 2,34,35,944 tk
Summary Table
Item Name Cost (tk)
Plate 74,17,500
Consumable 5,41,800
Sandblasting 3,42,900
Painting 5,39,184
Labor 12,90,000
Overhead 20,00,000
Mooring 40,00,000
Transportation 15,00,000
Installation 15,00,000
Profit 19,13,138
VAT 14,34,853
IT 9,56,569
Total 2,34,35,944
