Annual Rate Contract for Repairing of AC DI CI and PVC HDPE pipe line leakages under City Sub Dn. R and D Barmer for Urban Water Supply Scheme Barmer

Maintenance of pipelines irrespective of size & material which includes repairing of bursts & leakages pollution control, survey & removal of choking, disconnection of illegal connections, collection & recording minimum 10 nos. residual chlorine samples during daily supply timings, interconnections and all works related to pipe line network in existing distribution/rising main pipe lines of all sizes by digging out suitable size of pit in soft and loose soil/hard soil including cutting of black top, WBM & CC top of road of any size at work site. this will also include cutting of pipe ends, fixing of pipe piece with jointing material to make repair leak proof and then refilling of excavated tench/pit/road shall be done properly i.e after a layer of 20 cm with proper watering and ramming in layers. for entire job contractor will use their own T&P. Contractor with his own resources shall arrange de-watering ,JCB & Tractor compressor if any and restore any amenity at his own cost damaged while performing the work in this item. The work inculdes daily patrolling and repair the leakages within stipulated time and complete maintenance pipeline network of rising and distribution pipeline network with in the scope of work for per km pipe line per month. Jointing material shall be provided by the department. 50mm to 500mm. Minimum labour for a following kms pipelines to be deployed 401km to 500km- Five fitter-II & 10 beldar

Providing and laying in position cement concrete M10 grade nominal mix 1:3:6 (1 Cement : 3coarse sand : 6 graded stone aggregate 40 mm nominal size) in base course complete including all material, labour, machinery, lighting, guarding for road restoration work in trenches of pipe line and chamber work. Measurement for CC work to be made as per standard trench width specified in tender document and no extra payment shall be made be made for trench width more than specified, complete work as per technical specification and scope of work.