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CLOSE THIS BOOKSolar Water Heaters in Nepal (SKAT, 1979, 142 p.)
PART IV EXAMPLES OF COST CALCULATION
VIEW THE DOCUMENT7. EXAMPLES OF COST CALCULATION

Solar Water Heaters in Nepal (SKAT, 1979, 142 p.)

PART IV EXAMPLES OF COST CALCULATION

7. EXAMPLES OF COST CALCULATION

7.1 SOLAR SYSTEM

One hotwater storage tank 100ltr.

Two solar collectors SC-85

Pos.

Article

Qty.

Rate

Amount


Summary material




1-8

Material cost for hot water storage tank 100 Itr. net

1



10-13

Material cost for two solar collectors SC-85 and accessories, net

2









Sub total










Summary working hrs., labour charge









1-8

Hotwater storage tank 100 Itr. working hrs., and labour cost

163 hrs.








10-13

Two solar collector SC-85 and accessories





Working hrs., and labour cost

173 hrs.









Sub total





Overhead on material %





Overhead on labour charge %





Transportation charge









1-13

Total cost of one solar system one hotwater storage tank 100 Itr. two solar collectros SC-85




7.2 HOTWATER STORAGE TANK 100 LTR.

Pos.

Article


Qty.

Rate

Amount

1

MS-tank 100 ltr. (inside)





1.1

Cylinder MS-sheet 3 mm






1277 x 800 mm






1.021 m²+ 10%*


1.23 m²



1.2

Disk up/down MS-sheet 3 mm






400 x 400 mm






0.16 m² + 10% = 1.76 m² x 2


0.352 m²



1.3

G.l. pipe (vent)

1/2"

0.1 m



1.4

G.l. hexagon nuts

1/2"

2 pcs.



1.5

G.l. socket

1/2"

1 pc.



1.6

G.l. cap

1/2"

1 pc.



1.7

Red. Socket

1 /2" -3/8"

1 pc.



1.8

Welding rods 0 3 mm


40 pcs.



1.9

Tar-paint (2-coats)


1.2 Itr.



1.10

Cement (inside lining, corrosion production)


5 kg



1.11

Electric charge





1.12

Tool and machine charge





1

Material cost for MS-tank 100 ltr. net





1

Working hrs. and Labour charge for






cutting, rolling, welding, pressure






testing, painting and cement coating


24 hrs.









2

Flange with water and solar connection





2.1

Flangeringg MS

10 mm





outside 220, inside 155


4.25 kg



2.2

Flange MS 10 mm

220 mm

4.25 kg



2.3

Flange pipe MS-sheet 3 mm






471 x 90 mm = 0.042 m² + 10%


0.046 m²



2.4

G.l. pipe (hot water)

3/4"

0.2 m



2.5

G.l. pipe (hot water)

3/4"

0.712 m



2.6

G.l. pipe (cold water)

3/4"

0.1 m



2.7

G.l. pipe (solar inlet warm)

1 "

0.53 m



2.8

G.l. pipe (solar outlet cold)

1 "

0.1 m



2.9

Baffle plate G.l. sheet 18 gauge






60 x 70 mm


0.0046 m²



2.10

G.I. elbows

3/4"

2 pcs.



2.11

G .I. elbows

1 "

2 pcs.



2.12

G.I. unions

3/4"

2 pcs.



2.13

G.I. unions

1 "

2 pcs.



2.14

Nipple 2 x 120 mm

3/4"

0.24 m



2.15

Nipple 2 x 100 mm

1 "

0.2 m



2.16

G.I. socket

3/4"

1 pc.



2.17

Steam packing washers for union

¾”

2 pcs.



2.18

Steam packing washers for union

1"

2 pcs.



2.19

Steam packing washer 3 mm






180 outside, 145 inside






180 mm² = 0.032 m² + 10%


0.035 m²



2.20

Hexagon screws, galv.

M8 x 40

12 pcs.



2.21

Hexagon nuts, galv.

M8

12 pcs.



2.22

Threaded rod, galv. L= 100 mm

M8

1 pc.



2.23

Washers, galv.

M8

12 pcs.



2.24

Red oxyde paint


0.1 ltr.



2.25

Welding rods 0 3 mm

5 pcs.




2.26

Electric charge





2.27

Tool and machine charge





2.28

Oxygen and gas











2

Material cost for flange with water and solar connection, net





2

Working furs. and labour charge for gas cutting, filing, drilling, preparation of pipes, welding and assembling


32 hrs.



3

Side flange for thermostat and electro heating element





3.1

Flangeringg MS 10 mm






220 outside, 0 155 mm inside


4.25 kg



3.2

Flange, MS 10 mm 0 220 mm


4.25 kg



3.3

Flange pipe, MS-sheet 3 mm






0 150 mm, length 90 mm






471 x 115 mm






0.054 m² + 10%


0.059 m²



3.4

G.l. pipe

1½ ''

0.42 m



3.5

Disk MS-sheet 3 mm






48 x 48 mm


0.002 m²



3.6

MS-pipe

1/4"

0.42 m



3.7

Connectorr sheet 2 mm






60 x 40 mm


0.0024 m²



3.8

Electro element holder 2 mm






58 x 10 mm


0.0006 m²



3.9

Slotted pan head screw

M6 x 5

1 pc.



3.10

Steam packing washer 3 mm






180 outside, 0 145 inside






180 mm² = 0.034 m² + 10%


0.038 m²



3.11

Threaded rod + nut

M8 x 100

1



3.12

Hexagon screws, galv.

M8 x 40

12 pcs.



3.13

Hexagon nuts, galv.

M8

12 pcs.



3.14

Washers, galv.

M8

12 pcs.



3.15

Welding rod 3 mm


5 pcs.



3.16

Electric charge





3.17

Tool and machine charge





3.18

Oxygen and gas





3.19

Red oxyde paint


0.1 ltr.









3

Material cost for one side flange for thermostat and electro






heating element, net





3

Working furs. and labour charge for gas cutting, filing, drilling,






preparation of pipes, welding and assembling


24 hrs.



4

Insulationn 100 mm (for tank 100 ltr.)





4.1

Fibreglasss insulation 50 mm






First layer






1550 x 800


1.24 m²



4.2

Second layer






1900 x 800


1.52 m²



4.3

Top and bottom






600 x 600 = 0.36 m² x 4


1.44 m²



4.4

Pe-bag 1900 x 1000 mm


1



4

Material cost for insulation 100 mm thick for one 100 ltr. hotwater storage tank, net





4

Working furs. and labour charge for






cutting, fixing of the insulation


8 hrs.









5

Outside cover, (for tank 100 ltr.)





5.1

Alu. cover up, prefabricated






600 mm.


1 pc.



5.2

Alu. cover down, prefabricated






600 mm


1 pc.



5.3

Alu. cover for side flange






(250 mm), prefabricated 10"


1 pc.



5.4

Alu. cover for bottom flange






(230 mm), prefabricated 0 9"


1 pc.



5.5

Washers, galv.

M8

2 pcs.



5.6

Hexagon nuts

M8

2 pcs.



5.7

G.l. sheet, cylinder 24 gauge






1903 x 780 mm






1.48 m² + 10%


1.59 m²



5.8

Cover belts, G.l. sheet 24 gauge






(2 pieces)






50 x 1910 mm






0.095 m² + 10% = 0.1 x 2


0.2 m²



5.9

Screw plates, 4 pieces






size: 50x20 x 3 mm






MS-flat 0.08 m (1.8 kg/m)


0.094 kg



5.10

Hexagon screws, galv.

M8 x 25

4 pcs.



5.11

Hexagon nuts, galv.

M8

4 pcs.



5.12

Washers, galv.

M8

4 pcs.



5.13

Nameplate alu.

190 x 70 mm

1 pc.



5.14

Soldering mat. Tin

40/60

0.05 kg



5.15

Pop rivets alu.

3

30 pcs.



5.16

G. I. sheet watershild 20 gauge






400 x 40 mm






0.016 + 10%


0.017 m²



5.17

Red oxide paint


1.5 ltr.



5.18

White paint,enamel


1.0 ltr



5.19

Blue paint,enamel


0.2 ltr



5.20

Thiner


1.0 ltr



5.21

Tool and machine charge





5.22

Electric charge/gas











5

Material cost for G. l. outside






cover for one hotwater storage






tank 100 ltr., net





5

Working furs. and labour charge for






cutting, of alu. covers and G.l.






sheets, folding, bending,






assembling and painting


35 hrs.









6

Electric heating/thermostat





6.1

Heating element removable






L = 280 mm, 37 mm, 230 V


1 pc.



6.2

Thermostaat, L = 280 mm, 8 mm






230 V, 20 A






range 30 -80°C


1 pc.



6.3

Connectorr


1 pc.



6.4

Control lamp


1 pc.



6.5

Wiring


1



6.6

Cable shoes


3 pcs.



6.7

Slotted pan head screws

M4 x 20

3 pcs.









6

Material coast for electro






heating/thermostat ,net





6

Working furs. and labour charge for






fixing of heating element, thermostat,






wiring and testing


5 hrs.









7

Boiler stand SE 100 ltr.





7.1

Belt for boiler stand, MS 3 mm






1305 x 115 mm






0.15 m² + 10%


0.165 m²



7.2

G.l. pipe, support legs (3 pcs.) 1"






length 1000 mm x 3


3 m



7.3

G.l. pipe, support nipples






(3 pcs.) 1 "






length 250 mm x 3


0.75 m



7.4

Baseplate MS-sheet


5 mm




100 x 100 mm






0.01 m²+ 10%

0.011 m²




7.5

Gl-socketss

1"

3 pcs.



7.6

Hexagon screws, galv.

M10 x 50mm

2 pcs



7.7

Hexagon nuts, galv.

M10

2 pcs.



7.8

Washers, galv

M10

2 pcs



7.9

Welding rods 3 mm


3 pcs



7.10

Red oxyde paint


0.3 ltr.



7.11

Electric charge





7.12

Tool and machine charge











7

Material cost for one boiler






stand, net





7

Working furs. and labour charge for






cutting, drilling, rolling, thread






cutting, welding, painting, and assembling


14 hrs.



8

Wall-hangeers 100 ltr.





8.1

Belt for boiler wall-hangers






MS 3 mm (2 pcs.)






1305 x 115 mm






0.15 ²2 + 10% x 2


0.33 m²



8.2

Insulatingg strip, tarfelt






1265 x 115 mm (up only)


0.145 m²



8.3

Reinforceement up, MS-sheet 3 mm






95 x 55 mm (2 pcs.)






0.0052 m² + 10% x 2


0.002 m²



8.4

Reinforceement down, MS-sheet 3 mm






95 x 55 mm (2 pcs.)






0.0052 m² + 10% x 2


0.002 m²



8.5

Hexagon screws, galv.

M10 x 50 mm

4 pcs.



8.6

Hexagon nuts, galv.

M10

4 pcs.



8.7

Washers, galv.

M10

8 pcs.



8.8

Spacing sheets, MS 3 mm






220 x 195 mm (2 pcs.)






0.043 + 10% x 2


0.094 m²



8.9

Hangers, MS-flat






410 x 50 x 5 mm (2 pcs.)






L = 0.41 m (1.96 kg/m)


0.8 kg



8.10

Wall plugs, Mod. Fischer S12






(plastic dowel 0 12 mm)


4 pcs.



8.11

Square head wood screws, galv.






100 x 10 mm, (4" x 3/8")


4 pcs.



8.12

Welding rods 0 3 mm


3 pcs.



8.13

Red oxyde paint


0. 3 ltr.



8.14

Electric charge





8.15

Tool and machine charge











8

Material cost for two wall hangers






net





8

Working furs. and labour charge for






cutting, drilling, rolling, welding,






painting and assembling


21 hrs.



7.3 Hotwater storage tank 100 Itr.,SUMMARY

Pos.

Article

Qty.

Rate

Amount


Summary Material




1.

MS-tank 100 ltr. (inside)

1



2.

Flange with water and solar connection

1



3.

Side flange for thermostat and electro heating element

1



4.

Insulation, 100 mm (tank 100 ltr.)

1



5.

Outside cover (tank 100 ltr.)

1



6.

Electro heating/thermostat

1



7.

Boiler stand

1



8.

Wall hangers (optional to boiler stand)


1


1-8

Material cost for hotwater storage tank 100 ltr. net





Working hrs., labour charge




1.

MS-tank 100 ltr. (inside)

24 hrs.



2.

Flange with water and solar connection

32 hrs.



3.

Side flange for thermostat and





electro heating element

24 hrs.



4.

Insulation 100 mm (tank 100 ltr.)

8 hrs.



5.

Outside cover (tank 100 ltr.)

35 hrs.



6.

Electro heating/thermostat

5 hrs.



7.

Boiler stand

14 hrs.



8.

Wall hangers (optional to boiler stand)

21 hrs.



1-8

Working hrs., labour charge total










Overhead on materials, %





Overhead on labour charge, %





Transportation charge





Total cost of one hotwater storage tank 100 ltr.




EXAMPLES OF COST CALCULATION

7.4 SOLAR COLLECTOR SC-85

Pos.

Article


Oty.

Rate

Amount

10

Solar collector SC-85






Size: 1810x 790x 110 mm,






effective area 1.2 m²






Weight: 47 kg





10.1

Collector box 24 gauge G. l. sheet






1000 x 2000 mm






2m² + 10%*


2.2 m²



10.2

Frame left 24 gauge G. l. sheet






1829 x 100 mm






0.182 m² + 10%


0.2 m²



10.3

Frame right 24 gauge G. l. sheet






1829 x 100 mm






0.182 m² + 10%


0.2 m²



10.4

Frame top 24 gauge G. l. sheet






782 x 100 mm






0.078 m² + 10%


0.086m²



10.5

Frame bottom

24 gauge G. l. sheet





782 x 150 mm






1.17 m² + 10%

1.3 m²




10.6

Hexagon head tapping






screws w. metal and rubber






washer 6.5 x 16


10 pcs.



10.7

G.l. pipes 1/2"






length = 1668 mm,

9 pcs.

15.012 m



10.8

G.I. pipes 1 /2"






length = 830 mm,

2 pcs.

1.66 m



10.9

Alu. fins 26 gauge Alu. sheet






412 x 120 mm 36 pcs.






1.78 m² + 10%


1.95 m²



10.10

Cresent rings 27.7 x 21.7 mm


72 pcs.



10.11

Insulation fibreglass

50 mm





1950 x 1000 mm






1.95 m²


2 m²



10.12

Glass, 4 mm thick






1800 x 772 mm


1.39 m²



10.13

Rubberseal,






U-channel


5.3 m



10.14

Pop-rivets copper 3.2


8 pcs.



10.15

Soldering mat. tin 40/60


0.05 kg



10.16

Black board paint


0.5 ltr.



10.17

Red oxyde


1.0 ltr.



10.18

Brown No. 403 or dark green No. 212






enamel paint


1.0 ltr.



10.19

Thinner


0.5 ltr.



10.20

Tool and machine charge





10.21

Electric charge











10

Mat. cost for one collector






type SC-85, net





10

Working hrs., and labour charge






for one collector type SC-85






marking, cutting, folding,






pressing, welding, soldering,






testing, painting and assembling.


53 hrs.









11

Support for two collectors SC-85





11.1

Hat rails, (G.l. sheets 20 gauge






1926 x 152 mm (3 pcs. )






0.292 m² + 10% = 0.32 x 3


1.0 m²



11.2

Hat rails, G.l. sheets 20 gauge






1638 x,52 mm (2 pcs.)






0.248 m² + 10% = 0.273 x 2


0.55 m²



11.3

Distance pipes (6 pcs.)






G.l. pipe 3/4"






L= 60 mm x 6


0.36 m



11.4

Hexagon screws, galv.

M8 x 70

6 pcs.



11.5

Hexagon nuts, galv.

M8

6 pcs.



11.6

Washers, galv.

M8

12 pcs.



11.7

Flat iron (2 pcs.)






size: 50 x 150 x 5 mm






MS-flat 0.3 m (1.96 kg/m)


0.6 kg



11.8

Support sheets

3 mm





100 x 170 mm

(2 pcs.)





0.017 m² + 10%


0.019 m²



11.9

Reinforcement triangle sheet, 3 mm






50 x 50 mm (2 pcs.)





0.25

m² + 10%


0.0027m²



11.10

Hexagon screws, galv.

M8 x 20

4 pcs.



11.11

Hexagon nuts, galv.

M8

4 pcs.



11.12

Washers, galv.

M8

4 pcs.



11.13

G.I. pipes

(2 pcs.)





L = 600 mm

3/4"

1.2 m



11.14

G.l. pipes

(2 pcs.)





L = 170 mm

3/4"

0.34 m



11.15

G.I. sockets

3/4"

2 pcs.



11.16

Hexagon screws, galv.

M8 x 20

4 pcs.



11.17

Hexagon nuts, galv.

M8

4 pcs.



11.18

Washers, galv.

M8

4 pcs.



11.19

Red oxyde paint


0.2 llr.



11.20

Dark brown paint


0.2 ltr.



11.21

Tool and machine charge





11.22

Electric charge











11

Mat. cost support for two






collectors SC-85





11

Working hrs., and labour charge






support for two collectors SC-85






marking, cutting, punching,






folding, thread cutting, painting






and assembling


42 hrs.









12

Circulation G.l. pipes for two






collectors SC-85





12.1

G.I. pipe 1742 mm 1 "


1.742 m



12.2

G.l. pipes(2 pcs.)






L = 787 mm 1 "


1.574 m



12.3

G.I.pipes (2 pcs.)






L= 150 mm 1"


0.3 m



12.4

G.I. pipes 58 mm 1 "


0.058



12.5

G.l. elbows 1 "


6 pcs.



12.6

G.l. unions 1"


2 pcs.



12.7

Steam packing washers for






union 1"


2 pcs.



12.8

G.l. caps 1 "


2 pcs.



12.9

Fibreglass insulation 50 mm 1.0 m²











12.10

Red oxyde paint


0.3 ltr.









12.11

Tool and machine charge











12

Mat. cost circulation pipes for






two collectors SC-85





12

Working hrs., and labour charge,






circulation pipes for two






collectors SC-85






marking, cutting, thread cutting,






painting and assembling


14 hrs.









13

Panels for two collectors SC-85





13.1

Middle panel 24 gauge






1840 x 200 mm





0.368

m² + 10%


0.4 m²



13.2

Side panel 24 gauge






1950 x 265 mm (2 pcs.)






0.516 m² + 10% x 2


1.14 m²



13.3

Top panel 24 gauge






2018 x 265 mm






0.534 m² + 10%


0.59 m²



13.4

Pan head tapping screws, galv. 3.5 x 95


8 pcs



13.5

Red oxyde paint


1.0 ltr.



13.6

Dark brown paint.


1.0 ltr.



13.7 ´

Tool and machine charge











13

Mat. cost panels for two






collectors SC-85





13

Working hrs., and labour






charge panels for two collectors






marking, cutting, folding, drilling






painting, assembling


11 hrs.



7.5 SOLAR COLLECTOR SC-85, SUMMARY

Pos.

Article

Qty.

Rate

Amount


Summary Material




10

Material cost for two collectors SC-35

1 set



11

Support for two collectors SC-85

1



12

Circulation G. I. pipes for two





collectors SC-85

1



13

Panels for two collectors SC-35

1



10-13

Material cost for two solar collectors





SC-85 and accessories, net










Working hrs., labour charge














10

Solar collector SC-85





two pieces (2 x 53 hrs.)

106 hrs.



11

Support for two collectors SC-85

42 hrs.



12

Circulation G. I. pipes for two





collectors SC-85

14 hrs.



13

Panels for two collectors SC-85

11 hrs.



10-13

Working hrs., labour charge total

173 hrs.




Overhead on materials, %





Overhead on labour charge %





Transportation charge





Total cost for two solor collectors SC-85





and accessories




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