Construction of 02 nos Air crossing in seam VII and reconstruction of 04 nos of Air Crossing in seam VIB of Khairaha UG Mine

Amount

Item Description/ Heading Part (A) labour Cost

Roof heightening- ( Drilling, blasting, dressing, mucking etc.) (a) ( Drilling, blasting, dressing, mucking etc.) Including mucking - i) 4(6.20 X 4.50 X 1.20) = 133.92 m³ ii) 2(6.75 X 5.00 X 1.80) = 121.50 m³ Total = 255.42 m3

(b) ( Drilling, blasting, dressing, etc.) Excluding mucking - i) 4[(2.75 X 4.50 X (1.20+0 /2)] = 29.70 m³ ( Rate for excluding mucking = Item No. 2(h) =2106.42 Item No. 1(d) = 528.47 2(h)-1(d)= 1577.95

Groove cutting in soft stone In roof –i) 4{2X(4.80m.x0.15m.X0.10 m.)}=0.58 m3 ii) 2{2X(5.30m.x0.15m.X0.10 m.)}=0.32 m3 In side – i) 4{4X(1.20m.x0.15m.X0.10 m.))=0.29 m3 ii) 2{4X(1.80m.x0.15m.X0.10 m.)}=0.22 m3 Total = 1.41

Groove cutting in coal/shale - In floor – 2{2X( 5.60m.x0.30m.X0.30 m.)}=2.02 m3 In side –i)2{4X (2.50m.x0.30m.X0.30 m.)}=1.80 m3 ii) 2{4X(0.50m.x0.15m.X0.10 m.)}=0.06 m3 Total = 3.88 m3

Reinforced cement concrete (1:2:4) in wall/roof ceiling of air crossing/stopping (any thickness) in u/g (Excluding centring, shuttering, reinforcement cutting, bending, placing in position and binding etc all complete as well as cost of RCC materials) Lower wall- 2{2X6.35m.X2.80m.X0.30m.} = 21.34 m3 Upper wall – i)4{2X5.10m.X2.50m.X0.15m.} = 15.30 m3 ii)2{2X5.90m.X2.50m.X0.15m.} = 8.85 m3 Roof slab of Air crossing- i)4{5.80m. X 4.50m. X 0.10m.}= 10.44 m3 ii)2{6.35m. X 5.00m. X 0.10m.}= 6.35 m3 Total = 62.28 m3

Centring, shuttering, finishing and reinforcement including cutting, bending, placing in position and binding and strutting, propping etc compleCentring, shuttering, finishing and reinforcement including cutting, bending, placing in position and binding and strutting, propping etc complete Lower wall- 2{2X5.75m.X2.50m.} = 57.50 m2 Upper wall – i) 4{2X4.80m.X2.20m.} = 84.48 m2 ii)2{2X5.60m.X2.20m.} = 49.28 m2 Roof slab of Air crossing- i)4{5.50m. X 4.50m. } = 99.00 m2 ii)2{6.05m. X 5.00m. } = 60.50 m2 Total = 350.76 m2

6 mm thick cement plaster along with making of Board (1:6) Lower wall- 2{2 X (5.75m. X 2.50m. )}= 57.50 m2 Upper wall i)4{2 X (4.50m. X 2.20m. ))= 79.20 m2 ii)2{2 X (5.30m. X 2.20m. ))= 46.64 m2 TOTAL = 183.34 m2

Loading of all kind building materials in to tub at Inc. mouth- a) Cement

b) Sand + stone chips (29.12+55.43 m³)

d) Steel rod(12 mm)

Transportation of all kind of building material from surface to ug through haulages with tramming and coupling/uncoupling etc for a distance every 1.0 km there of and bringing the empty tubs to surface a) Cement

b) Sand + stone chips (29.12+55.43 m³)

d) Steel rod(12 mm)

Unloading of all kind building materials in to tub at distination a) Cement

b) Sand + stone chips (29.12+55.43 m³)

d) Steel rod(12 mm)

Lead for transportation/carriage of all kinds building materials by manually in u/g. (46 to 60 mtr.)

Roof support including drilling of holes (stone) by providing of drill bit. drill rod, & jet pump by the contractor and installation of roof bolts (1.50m to 1.80m) with bearing plate & w-strap (where required) , Anchorage testing and carrying of support materials. Total length – 65.00/0.80=81.25X 5 nos. = 405 nos. Additional bolts required in 06 Junctions = 12 rows x 5 nos. = 60 No. Total = 465 nos

Part-B Material Cost supply and stacking of building materials Cement

Stone chips

Steel rod(12mm)

Total impact of GST for the purpose of CTC

VIKASH KUMAR VISHWAKARMA (BID ID -1103742)

UDAY RAJ SINGH (BID ID -1104293)