tapping of upper stream of thokchu source water and injecting to existing main source at thokchu khola for kalimpong town. , removal of rubbish earth ,mixed with moorum, kankar, pebbles, rock, boulders etc.(a) removel of spoils within a lead of 150m , earthwork in excavation in all sorts of soils but excluding stony and moorum soil including removing spreading of stacking the spoils within a laed of 150m as per directed & including triming the sides of trenches levelling dressing and bailing or pumping out water etc. required complete depth of excavation,exceeding 1 m and not exceding 2m below average bed level at the site of excavation and notrequiring shorting. , hire and labour charge for shuttering with centreing and necessary staging upto 4 m. using approved stout props and thick hard wood planks of approved thickness with required bracing for concrete slabs, beams,columns, lintels curved or staight including fitting fixing and striking out after complection of works. (upto roof of ground floor). (a) 25 mm. to 30 mm. thick wooden shuttering as per decision & direction of the engineer-in-charge. , cement concretewith 30 mm down graded shinglesexcluding shutteringand reinforcementwith n.b variety. (a) 1:3:6 propotion. , ordinary cement concretem15(mix 1:2:4) withgraded stone chips 20 mmnominal size (excluding shuttering and reinforcement if,any (b) river bazree. , plum concrete work with cement concrete with 30 mm down graded stone metal 40% and stone boulder of size 150mm and above placed in position as directed excluding shuttering if any (i) (1:3:6) proportion , providing weep holes (150x75)in abutmentor wing wall including packing with brick bats or boulders of approved quality and size at the back side. , rubble masonary in cement mortar (6:1) with hard dressed stone from approved and clean washed coarse sand including cost and carriage of all materials to site (in roadss and jhora works) rate provided excludes cost and carriage of stone.constn wing is to add cost and carriage of stones obly to arrive at the complete rate.a) random. , m.s structural work in column beams etc. with simple rolled structural members e.g joints angle. channel sections confirming to is: 226,is:808 & sp(6)-1964 connected to one another with bracket, gussets cleats as per design, direction of engineer-in charge complete including cutting to requisite shape and length fabrication with necessary bolting metals arc welding conforming to is :816-1956& is 1995 using electrodes of approved make and brand conforming to is 814-1957 haulage ,hoisting and erection all complete. the rates including the cost of rolled steel section, consumables such as electrodes, gas and hire charge of all tools and plants and labour required for the work including all incidental charges such as electricity charges, labour insurance charges ect. i)charges etc. for structural member of specified section weighing not less than 22.5 kg/m9 , supply of pvc pipes and fittings schedule 80 (medium duty) conforming astmd - 1785 and threaded to match with gi pipes. pipes as per is: 1239 (part-i). (a) pvc pipes (ii) 100 mm. dia. , carriage of cement g.i. pipes etc. from kaliompong upto working site. , a) cement , b) pipes , c) stone boulder/chips