design, fabrication, installation testing and commissioning of mechanism for hanging of chain pulley block for extraction of suction pipes and foot valves from sump tank at pumping station kheralaid..the job involves laying of rcc block of size of 1.25mx1.25mx1.5m adjacent to suction pipes for anchoring of vertical cantilever section. by way of excavation of trench of size (1.25mx1.25mx1.5m) by excavating soil, removal of excavated material and disposing of the same. laying of crushed stone 40 mm, laying of one layer of 1:4:8 concrete mass of 100 depth, providing and laying of tmt steel 10mm,250 mm square mesh throughout the block, providing and fabrication of 04 no. foundation bolts along with nuts as per site requirement and then grouting properly in the foundation block along with laying of cement concrete mass in the ratio of 1:1.5:3 and curing complete.
job further include providing and fabrication of one no.approx.3.5 meter vertical section from 4x4 ms pipe having minimum thickness of 4 mm ,fabrication of foundation plate of size 1x1from 10mm thick ms plate, drilling of 4 no.of holes of 25 mm dia to ms plate and welding the foundation plate to the vertical section pipe. providing and fabrication of cantilever section approx.3.5 mtrs. in length from 4x4 ms pipe, fitting of u shaped ms hook of round bar with one end of cantilever section for hanging of chain pulley block and fitting other end of cantilever section with vertical section with a suitable mechanism fabricated out of ms section with proper welding so as to allow the movement of the cantilever section more than 180 degree-for safe extraction of foot valve, suction pipe and and also welding one no brace/support to the cantilever section and then erection of whole fabricated vertical structure by bolting the foundation plate with anchoring bolts and tightening properly with nuts/washers including providing/fabrication of one no support to vertical structure/ section using ms channel/angle of suitable length and thickness. job further include repair to 2nos foot valves 10 dia along with suction pipes by way of extraction of suction pipe lines along with foot valve from the sump tank with the help of manual labour using tools and tackles, dismantling of foot valve and replacing the leather sheet cut to size along with flap, hinge pin including replacement of all damaged nuts /bolts and rubber sheet of 2 nos suction pipe and then fitting/ lowering of suction pipe / foot valves into the sump tank after proper assembling. job also includes providing and fitting of chain pulley block of 2t capacity conforming to isi standard and then testing on full load. complete job include cost of material, skilled/ unskilled charges. transportation/ headload charges, loading/unloading charges, hire charges of tools and tackles, shuttering/welding charges etc inclusive of all taxes.
