construction/ repair of bordang ssk under labdah gram panchayat within r/r dev. block, takdah, darjeeling.-.s. structural works with hollow sections (square or rectangular shape) conforming to is: 806-1968 & is:1161-1998) connected to one another with bracket, gusset, cleat as per design, drawing & direction of engineer-in-charge complete including cutting to requisite shape & size, fabrication including metal arc welding conforming to is: 816-1969 & is: 9595 using electrodes of approved make and brand conforming to is:814- 2004, haulage, hoisting and erection all complete. the rate includes the cost of all m.s. hollow section, all consumables such as electrodes, gas and hire charges of all tools and plants and labour reqired for execution and all incidental chages (such as electricity, labour insurance) etc. complete. payment to be made on the basis of calculated weight of structural memebrs of ms holow section as specified in relevent is code in finished work. payment for gusset, bracket, cleat may be made by adding the actual weight of such items with weight of finished structural members. the rates are considered for a hight of erection 8 m. / 2nd floor level from the ground. add 1.5 % extra over the rate for each additional floor or 4m. beyond the initial 8 m. or part thereof. 2 galvanized corrugated iron sheet work (excluding the supporting frame work) fitted and fixed with 10 mm. dia j or lhook-bolts, limpet andbitumen washers and putty complete with150mm.endlapandonecorrugaion minimum side lap. ( payment to be made on area of finished work). (gci sheet to be supplied by contractor). ’t) in roof:-. 2b) with 0.63 mm.thick sheet. 3 galvanisedironsheetridgingfittedwithnecessarybolt, screws, washers etc complete. (22s mm end lapping). 4 galvanizedironsheeteavesgutterfittedandfixedwith necessary 50 mm x 6 mm.m.s.flat bar clamps bent to design, bolts. nuts,washersetc.complete.eavesguttermadeof 0.63 mm. sheets.(300mm end lapping). 19.q1 (a) 22s mm. wide gutter. 5 misc. items 6 add gst @ 18% 7 add cess @ 1%