Repairs of roofs of CBM building, MB-1, MB-2, and CWS Store building during monsoon, epoxy flooring at Sub-assembly Shop, and some other minor miscellaneous works in these buildings at Workshop premises of CWS Tadali

SCHEDULE-B (Items from CPWD DSR-2021): Item no. 1.01 to 1.22

Cleaning of roof sheets & their valley gutters, minor works for leak-proofing, etc. on roofs of MB-1, MB-2, CWS Store, and CBM building. The job includes: (A) Cleaning dead vegetation (such as leaves) and other garbage from roof sheets, their valleys gutters, funnels, mouths of rain-water pipes, etc; (B) Cleaning chokages in rain-water pipes; (C) Leak-proofing joints/ overlaps of sheets & their valley gutters & holes in them, by applying joint sealants, coatings, welding, replacement of washers, etc. as per requirement; (D) Fixing M.S. funnels on mouths of rain-water pipes by cutting holes in G.I. valley gutters & fixing M.S. funnels in them, ensuring that both these joints/ overlaps should be leak-proof; (E) Trimming branches of trees near/ over these buildings; and (F) Other allied jobs. Note: (i) All these jobs are to be carried out by the contractor as per instructions of the department (Engineer-in-charge or his representative(s) as well as the respective Shop Incharge or his/her representative(s)); (ii) The contractor is required to deploy 4 skilled workers daily for this job in first shift. The contractor has to deploy such workers which are trained, experienced, and suitable for the job. Providing leaves to the workers is the responsibility of the contractor and the contractor is also required to deploy suitable substitute(s) in case the worker(s) is/are on leave/ absent. In measurement, number of days shall be calculated as total number of manshifts (actual attendance) divided by 4. (iii) Daily attendance shall be maintained at the designated place. Each worker is required to carry an ID card of some government authority (aadhaar card, voter's card, driver's licence, PAN card, etc.). (iv) The contractor's workers shall be equipped with all the safety gear/ accessories required for the job including safety harnesses, helmets, safety shoes, gloves (washable & re-usable), welding screen, face masks (if required) (washable & re-usable), etc. They shall also be equipped with all the tools & equipment required for the jobs in this item, such as tools for cleaning dead vegetation, tools for cleaning chokages, tools for leak-proofing joints & overlaps (including portable welding machine & electric cable), tools for fixing M.S. funnels in G.I. valley gutters, axe (for trimming branches), etc. All these personal safety accessories and tools are to be provided by the contractor to the workers, and there shall be no separate measurement/ payment for them. (v) Other materials/ consumables, such as joint sealants, coatings, welding rods, etc. required for these jobs & M.S. funnels shall be supplied by the contractor (details, quantities, & costs covered separately in item no. 3). Water & electricity shall be made available by WCL without any cost to be charged from the contractor.

Supplying the following materials of quality & brand as approved by the department, and putting them at designated places as per instructions of the department. Full quantities of each item to be supplied at the beginning of the work.

Multipurpose sealant in semi-solid putty form (such as M-seal or equivalent) for sealing, joining, & fixing.

Polyurethane elastomeric sealant (liquid) such as Polydee or equivalent) for leak-proofing of G.I. valley gutters etc.

Fiberglass/ polyester mat for repair of G.I. valley gutters etc.

Suitable welding rods (ISI marked) for welding works required in item no. 2.

M.S. funnels of approved design, of 80 mm nominal dia, 4 mm wall thickness, and 0.5 metre length.

Renewing glass panes, with putty and nails wherever necessary including racking out the old putty: Transparent wired glass panes of nominal thickness 6 mm, with specifications as per IS 5437:1994 (with up-to-date amendments). Note: (i) The places accessible through available ladders & mechanisms in these shops are covered in this item. Front wall of MB-2, rear wall of MB-1, rear wall of CWS Store, & front wall of CBM building, which are not accessible with these available means are not included in this item. (ii) The contractor's workers shall be equipped with all the safety gear/ accessories required for the job including safety harnesses, helmets, safety shoes, gloves (washable & re-usable), face masks (if required) (washable & re-usable), etc. They shall also be equipped with all the tools & equipment required for the work in this item. All these personal safety accessories and tools are to be provided by the contractor to the workers, and there shall be no separate measurement/ payment for them. (iii) Water shall be made available by WCL without any cost to be charged from the contractor.

Renewing glass panes, with putty and nails wherever necessary including racking out the old putty: Transparent wired glass panes of nominal thickness 6 mm, with specifications as per IS 5437:1994 (with up-to-date amendments). Note: (i) Front wall of MB-2, rear wall of MB-1, rear wall of CWS Store, & front wall of CBM building, which are not accessible through available ladders/ mechanisms in these shops, are included in this item. (ii) The contractor is required to provide stable scaffolding of sufficient height with steel mechanical props and stable working platform during execution of work in this item. Alternatively, wherever possible, instead of scaffolding, the contractor may deploy mobile basket crane of sufficient height for execution of work in this item. (iii) The contractor's workers shall be equipped with all the safety gear/ accessories required for the job including safety harnesses, helmets, safety shoes, gloves (washable & re-usable), face masks (if required) (washable & re-usable), etc. They shall also be equipped with all the tools & equipment required for the work in this item. All these personal safety accessories and tools are to be provided by the contractor to the workers, and there shall be no separate measurement/ payment for them. (iv) Water shall be made available by WCL without any cost to be charged from the contractor.