supply and installation of 2 mt capacity single girder h.o.t crane with gantry girder and square rail for sarbori phase-2 water supply scheme.; 1 supply of 2 m.t. capacity x 3.6 meters span approx. x 4.1 meters lift approx. single girder construction hand operated overhead traveling crane incorporated with indef brand triple spur gear chain pulley block with gear travelling trolley. all the three motions to the crane shall be manual and to be operated from floor by hand chain. the crane shall be designed for class i duty indoor operation conforming to is: 807, is: 3177 and is: 3832 as and where applicable. the crane structure shall be supplied duly painted with two coats of red lead primer. the crane shall be tested with 25% overloadas per is: 807-2006. 2 supply of 4 nos columns to be fixed on operating floor with suitable fastners [ the columns shall be placed between the two ends of wall at a sutiable location ] and supply of 9.1 mtrs. x 2=18.2 mtrs. long steel gantry girder with 40 mm square rail suitable for the above crane and to be designed for a maximum column pitch distance of 3.00 meters [ the steel gantry girders shall be supported onproposed columns and shall be grouted at the two ends of the wall bysuitable joint plates and side tiesalongwith the gantry girder ] the column and gantry structure shall be supplied duly painted with two coats of red lead primer prior. 3 erection and commissioning of 2 ton capacity h.o.t crane complete with column and steel gantrygirder and square rail as offered above under sl. no. 01 ( a ) and 01 ( b ) at your site in purulia 4 add gst @ 18% 5 add cess @ 1%