tender for repair and maintenance of ibb fence (bfl no.34 -106 and bp no. 1053 mp to 1058 12-t) in aor of 183 bn bsf under shq bsf dhubri; 1 earth work in excavation by mechanical means (hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.all kinds of soil. 2 filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m. 3 supplying and stacking at site. good earth. 4 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level : 1:5:10 (1 cement : 5 coarse sand (zone-iii) derived from natural sources: 10 graded stone aggregate 40 mm nominal size derived from natural sources). 5 reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. above plinth level up to floor five level, excluding cost of centering, shuttering, finishing and reinforcement1:1.5:3 (1 cement: 1.5 coarse sand (zone-iii) derived from natural sources: 3 graded stone aggregate 20 mm nominal size derived from natural sources). 6 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level :1:3:6 (1 cement : 3 coarse sand(zone-iii) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources). 7 centering and shuttering including strutting, propping etc. and removal of form for. walls (any thickness) including attached pilasters, buttresses, plinth and string courses etc. 8 steel reinforcement for r.c.c. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. thermo-mechanically treated bars of grade fe-500d or more.80 kg/cum 9 demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of engineer - in - charge. nominal concrete 1:3:6 or richer mix (i/c equivalent design mix) 10 dismantling barbed wire or flexible wire rope in fencing including making rolls and stacking within 50 metres lead. 11 modified estimated cost @ 0.973 12 add 16.82 % cost index 13 providing & fixing g.i. barbed wire of size 2.50 x 2.00 mm (weight to be not less than 108 gms per metre length) conforming to is-278-1978 and stretching with existing ms hooks / tightening bolts to angle iron posts in holes already drilled with spilt cotter pins 5 x 22 (confirming to is 549 steel) i/c necessary painting by dipping in paint twice with anticorrosive bitumastic paint (is-158) of approved brand and manufacture in black shade to give a smooth and even surface complete as per direction of engineer-in-charge.(single length of barbed wire to be measured for payment).