2.0
JOB # 1: CLEANING OF EXISTING GI DUCTs –
BOQ FOR CLEANING OF AHUs & DUCTs:
S.No.
Description
2.1
AHU (East Wing):
2.1.1
The acoustic insulation, if found
damaged or loose, it should be
replaced with new acoustic lining
having a perforated aluminum sheet
to hold it in position.
The air-handling unit (AHU)
cleanliness shall include components
within the unit, including filters,
cooling coil, condensate pans,
condensate drain lines, acoustic
insulation,
fans
and
fan
compartments, dampers, air box &
door gaskets.
Qty
(nos/lot)
Rate
(Rs.)
Total
Amount
(Rs.)
One lot
The approximate air box (plenum)
dimensions are: 4600 mm (L) x 1100
mm (W) x 915 mm (H). There is
acoustic insulation inside of the air
box.
(The air box is located just above the
AHU.)
Area for acoustic lining and
cleaning the inner surface area of the
air box and 1 meter deep of each
supply duct.
40 M2
Acoustic lining with resin bonded
glass wool (UP Twiga, Lloyd
Insulation), 25 mm, 32 kg/M3
density. Final finish with 0.5 mm
thick perforated aluminum sheet
with brass screws, having 3 mm
perforations at 6mm centers.
2.1.2
Overall Dimensions of AHU are:
2750 mm (L) x 1660 mm (H) x 3100
mm (W).
Area for cleaning, the inner surface
area of the AHU
40 M2
1
S.No.
2.2
Description
Qty
(nos/lot)
Rate
(Rs.)
Total
Amount
(Rs.)
East Wing Ground Floor Ducts:
The
supply/distributing/return
duct cleanliness shall include supply
components including, but not
limited to, both inside and outside
surface of the supply/distribution air
duct, inner side of the return air duct
(it is made in a box type around the
supply duct), return air shaft, controls,
mixing/control
boxes,
supply/return air grilles and other
internal components.
Approximate Duct Dimensions:
A. Main Supply DuctsThere are three supply air ducts from
AHU to Ground Floor:
Duct 1: 526 mm x 498 mm
Duct 2: 536 mm x 356 mm
Duct 3: 331 mm x 486 mm
Approximate average length of each
above duct is 17 meters.
Area for cleaning:
The inner surface area of the Ducts
The outer surface area of the Ducts
The inner surface area of the Return
air shaft passage.
102 M2
110 M2
50 M2
B. Distribution DuctsAt the floor level, air is distributed in
a ring form by the distributing
supply air ducts.
Average duct size is: 650mm x
350mm
Approximate overall length of the
above duct is 70 meters.
Area for cleaning:
The inner surface area of the Ducts
The outer surface area of the Ducts
155 M2
165 M2
2
S.No.
Description
Qty
(nos/lot)
The inner surface area of the Return
air passage.
280 M2
Rate
(Rs.)
Total
Amount
(Rs.)
C. Supply Air GrillesApproximate number of supply
Grilles = 30.
Area for cleaning:
Cross Section Area of Grilles
3.5 M2
D. Return Air GrillesThese are continuous slot typeArea for cleaning:
Cross Section Area of Return Air
Slots
2.3
AHU (West Wing):
2.3.1
The acoustic insulation, if found
damaged or loose, it should be
replaced with new acoustic lining
having a perforated aluminum sheet
to hold it in position.
The air-handling unit (AHU)
cleanliness shall include components
within the unit, including filters,
cooling coil, condensate pans,
condensate drain lines, acoustic
insulation,
fans
and
fan
compartments, dampers, air box &
door gaskets.
The approximate air box (plenum)
dimensions are: 4600 mm (L) x 1100
mm (W) x 915 mm (H). There is
acoustic insulation inside of the air
box.
(The air box is located just above the
AHU.)
Area for acoustic lining and
cleaning the inner surface area of the
air box and 1 meter deep of each
supply duct.
9 M2
One lot
40 M2
3
S.No.
Description
Qty
(nos/lot)
Rate
(Rs.)
Total
Amount
(Rs.)
Acoustic lining with resin bonded
glass wool (UP Twiga, Lloyd
Insulation), 25 mm, 32 kg/M3
density. Final finish with 0.5 mm
thick perforated aluminum sheet
with brass screws, having 3 mm
perforations at 6mm centers.
2.3.2
Overall Dimensions of AHU are:
2750 mm (L) x 1660 mm (H) x 3100
mm (W).
Area for cleaning, the inner surface
area of the AHU
2.4
40 M2
West Wing Ground Floor Ducts:
The
supply/distributing/return
duct cleanliness shall include supply
components including, but not
limited to, both inside and outside
surface of the supply/distribution air
duct, inner side of the return air duct
(it is made in a box type around the
supply duct), return air shaft, controls,
mixing/control
boxes,
supply/return air grilles and other
internal components.
Approximate Duct Dimensions:
A. Main Supply DuctsThere are three supply air ducts from
AHU to Ground Floor:
Duct 1: 585 mm x 470 mm
Duct 2: 435 mm x 320 mm
Duct 3: 630 mm x 275 mm
Approximate average length of each
above duct is 17 meters.
Area for cleaning:
The inner surface area of the Ducts
The outer surface area of the Ducts
The inner surface area of the Return
air shaft passage.
105M2
115M2
50 M2
4
S.No.
Description
Qty
(nos/lot)
Rate
(Rs.)
Total
Amount
(Rs.)
B. Distribution DuctsAt the floor level air is distributed in
a ring form by the distributing
supply air ducts.
Average duct size is: 650mm x
350mm
Approximate overall length of the
above duct is 70 meters.
Area for cleaning:
The inner surface area of the Ducts
The outer surface area of the Ducts
The inner surface area of the Return
air passage.
155 M2
165 M2
280 M2
C. Supply Air GrillesApproximate number of supply
Grilles = 30.
Area for cleaning:
Cross Section Area of Grilles
3.5 M2
D. Return Air GrillesThese are continuous slot typeArea for cleaning:
Cross Section Area of Return Air
Slots
2.5
9 M2
West Wing Basement Ducts:
The
supply/distributing/return
duct cleanliness shall include supply
components including, but not
limited to, both inside and outside
surface of the supply/distribution air
duct, inner side of the return air duct
(it is made in a box type around the
supply duct), return air shaft, controls,
mixing/control boxes, supply/
return air grilles and other internal
components.
Approximate Duct Dimensions:
5
S.No.
Description
Qty
(nos/lot)
Rate
(Rs.)
Total
Amount
(Rs.)
A. Main Supply DuctsDuct 1: 305 mm x 205 mm
Duct 2: 330 mm x 125 mm
Duct 3: 305 mm x 185 mm
Approximate average length of each
above duct is 12 meters.
Area for cleaning:
The inner surface area of the Ducts
The outer surface area of the Ducts
40 M2
42 M2
B. Distribution DuctsAt the floor level air is distributed in
a ring form by the distributing
supply air ducts.
Average duct size is: 450mm x
300mm
Approximate overall length of the
above duct is 70 meters.
Area for cleaning:
The inner surface area of the Ducts
The outer surface area of the Ducts
The inner surface area of the Return
air passage.
115 M2
120 M2
280 M2
C. Supply Air GrillesApproximate number of supply
Grilles = 25.
Area for cleaning:
Cross Section Area of Grilles
3 M2
D. Return Air GrillesThese are continuous slot typeArea for cleaning:
Cross Section Area of Return Air
Slots
9 M2
6