Heightening Widening of existing drift, Demolishing R.C.C. wall and coal gallery and Roof and Side blasting in coal for Preparation of roadway for marching of 01 nos. LHCM in Dip Panel of Burhar VI Bottom Seam an 01 nos. LHCM in Burhar V Seam at Damn

Dismantling steel work manually/ by mechanical means in built up sections without dismembering and stacking within 50 metres lead as per direction of Engineer-in-charge. ISMB (200X100) Girder - 40 Nos. X 5.50m. X 25.40kg/m. = 5588.00 kg M.S. Plate (8mm) 35.00 X (3.50+4.00)/2 X 62.80kg/m. = 8242.50 kg

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge. Drift - 0L VI Bottom Seam to V Seam 35 m. RCC Wall – 2( 35.00X3.00X0.30) = 63.00 m3

Extra for cutting reinforcement bars manually/ by mechanical means in R.C.C. or R.B. work (Payment shall be made on the cross sectional area of R.C.C. or R.B. work) as per direction of Engineer-in-charge. 2( 35.00X3.00) = 210.00 m2

Groove cutting in stone for foundation, manhole/duggi hole/pits and excavated material to be removed and stacked separately within 50m.distance. Drift - 0L VI Bottom Seam to 5L V Seam – 60.00 X(0.85+0.65+0.70+0.55+0.60+0.55) /6 (0.65) X 2.65 = 103.35 m3

Roof & Side blasting including labour for drilling, blasting & mucking manually in Stone/coal (drilling by hand). (A) Drift - 31L/7DE V Seam to 31L/8DE VI Bottom Seam – (1) Widening- 25.00 X(0.70+0.65+0.60 +0.75+0.50+ 0.85+0.50+ 0.60+0.55 +0.65) /10 (0.64) X 2.50=40.00 m3 (2) heightening 10.00 X(0.20+0.25+0.30 +0.20+0.35) /5(0.64) X 3.90= 10.14 m3 Total - 50.14 m3 (B)For Widening of Existing gallery Seam VI Bottom 0L /4DE TO 6L/4DE, 6L/4DE TO 6L/1DE, 6L/1DE TO 16L/1DE, 16L/1DE TO 16L/0D, 0D/16L TO 0D/32L, 32L/0D TO 16DW/32L, 16DW/32L TO 42L/16DW, 38L/16DW TO 50DW/39LC (C) For Widening of Existing gallery Seam V 5L/0D TO 31L/0D, 31L/0D TO 7DE/31L & 8D/31L TO 13 DE, 31LE/13D TO 31L/23DE (Seam VI Bottom)– Total length of gallery -3056.00 M. and Lenght for widening of Existing gallery- 1230.00 M.- 1566.00 x (0.40+0.55+0.35+0.65+0.50+0.55 +0.60+0.30+0.70+0.35+0.50+0.45+0.65+0.40+0.45+0.50+0.45+0.70+0.35+0.50+0.25+0.60+0.65+0.55+0.45+0.30+0.65+0.70+0.50+0.45+0.30+0.45+0.30+0.55+0.450+0.30+0.40+0.75+0.40+0.65+0.40+0.65+0.35+0.40+0.35+0.40+0.80+0.35+0.45+0.65+0.40+0.50+0.35+0.55/54 = 1566.00 x 0.48M.(Ave.) x 2.60M. (Ave.) = 1954.37 m3 (C) For Widening of Existing gallery corner- (1) 4DE/6L- 1/2 X (7.00X7.00X2.65)= 64.93 M3 (2) 1DE/6L- 1/2 X (7.00X7.00X2.65)= 64.93 M3 (3) 1DE/16L-1/2 X (7.00X7.00X2.70)= 66.15 M3 (4) 0D/16L- 1/2 X (7.00X7.00X2.70)= 66.15 M3 (5) 0D/32L- 1/2 X (7.00X7.00X2.60)= 63.70 M3 (6) 16DW/32L- 1/2 X (7.00X7.00X2.60)= 63.70 M3 (7) 16DW/39L- 1/2 X (7.00X7.00X2.60)= 63.70M3 (8) 20DW/39L- 1/2 X (7.00X7.00X2.65)= 64.93 M3 (9) 20DW/39LC- 1/2 X (7.00X7.00X2.65)= 64.93 M3 (10) 21DW/39LC-1/2 X(7.00X7.00X2.65)= 64.93 M3 (11) 21DW/39LC- 1/2 X (7.00X7.00X2.65)= 64.93 M3 (12) 1DE/31L-1/2 X(7.00X7.00X2.50)= 61.25 M3 Total - 710.53 m3 GRAND TOTAL- 50.14+1954.37+710.53 =2715.04 m3

Roof bolting in u/g including drilling by power drill manually with wet drilling arrangement (1.50m – 1.80m length with 27mm dia, drill bit for anchoring 20/22 mm dia roof bolts with resin capsules and fitting of bearing plates and W-strap (as and when required) and tightening of nuts etc complete. {(Including material cost as per Item no. 20 of GMSOR'24 i.e. Cost of drill rod, drill bit ( Rs. 27.49/Bolt) & jet pressure pump (Rs. 1.18/Bolt)] Total 25+1566=1591 M. lenght /1.20 m.= (1325 m. X 2Row = 2650 Nos. + additional re- support, Side support for drift & Corner support of Existing gallery- 550 Nos. of Bolt Total - 3200 Nos. )