Miscellaneous works related to monsoon preparation, such as roof repairs, providing missing glass panes, etc. at MB-1, MB-2, CWS Store, and CBM building at Workshop premises of CWS Tadali

Amount

Cleaning of roof sheets & their valleys 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 the above 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 3 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 3. (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 cutting valley gutters & fixing M.S. funnels, 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. 2). 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.

Sealant such as M-seal, Polyseal or equivalent for leak-proofing joints/ overlaps & holes in roofing sheets, valley gutters, fasteners, etc.

Polydee LM or equivalent flexible polyurethane coating to repair G.I. valley gutters etc.

Glass fiber/ polyster matt for flexible polyurethane coating to repair G.I. valley gutters etc.

Suitable welding rods (ISI marked) for welding works required in item no. 1.

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

Clearing chokages in underground drains & their chambers in MB-1, MB-2, CWS Store, & CBM building by removing covers from the chambers, cleaning the chokages using flexible rods & removing unwanted objects, refixing the covers, and putting the unwanted objects at designated places (as instructed) for disposal. Note: (i) The jobs in this item 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 2 cleaning workers per day, as & when required, for this job in first shift. The contractor has to deploy such workers which are trained, experienced, and suitable for the job. In measurement, number of days shall be calculated as total number of manshifts (actual attendance) divided by 2. (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 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 jobs in this item, such as flexible rods, phawda, ghamela, etc. All these personal safety accessories and tools are to be provided by the contractor to the workers, and their shall be no separate measurement/ payment for them. (v) Water shall be made available by WCL without any cost to be charged from the contractor.

Re-starting non-functioning turbo-ventilators by taking them out, diagnosing & rectifying the problems including changing bearings/ oiling/ greasing/ changing nut-bolts, etc. (as required), cleaning, and re-installing them with proper alignment, while ensuring that they are functioning again. Note: (i) Measurement shall be made as per the number of turbo-ventilators which are non-functioning (in idle state) become functioning again (freely rotating). (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 job 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) The palces 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, instead of scaffolding, the contractor may deploy 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.

Repair/ maintenance of jammed/ damaged rolling shutters (operated by electric motors) by taking them out,diagnosing & rectifying the problem including repairing/ replacing chain/ motor/ gears/ bearings/ nut-bolts etc. (as per requirement), oiling, greasing, and re-fixing them, while ensuring that they start functioning/ moving smoothly again. Note: (i) The job in this item is to be carried out by the contractor as & when required, 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) Measurement shall be made as per the number of shutters for which the contractor was instructed to do this job and after this job, they start functioning/ moving smoothly. (iii) The contractor's workers shall be equipped with all the safety gear/ accessories required for the job including 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 job 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.

Item code 15.28.1 Dismantling roofing including ridges, hips, valleys and gutters etc., and stacking the material within 50 metres lead of: G.S. Sheet.

Item code 12.47.1 Providing & fixing UV stabilised fiberglass reinforced plastic sheet roofing up to any pitch, including fixing with polymer coated 'J' or 'L' hooks, bolts & nuts 8mm dia. G.I plain/bitumen washers complete but excluding the cost of purlins, rafters, trusses etc. The sheets shall be manufactured out of 2400 TEX panel rovigs incorporating minimum 0.3% ultra-violet stabiliser in resin system under approximately 2400 psi and hot cured. They shall be of uniform pigmentation and thickness without air pockets and shall conform to IS 10192 and IS 12866.The sheets shall be opaque or translucent, clear or pigmented, textured or smooth as specified. 2 mm thick corrugated (2.5" or 4.2" or 6") or step-down (2" or 3" or 6" ) as specified.

Item code 12.5.1 Providing valleys of 90 cm wide overall in plain G.S. Sheet fixed with polymer coated J, or L hooks, bolts and nuts 8 mm dia G.I. limpet and bitumen washers complete : 1.60 mm thick with zinc coating not less than 350 gm/m².

Item code 15.42.1 Dismantling C.I. or asbestos rain water pipe with fittings and clamps including stacking the material within 50 metres lead : 75 to 80 mm dia pipe.

Item code 12.41.2 Providing and fixing on wall face unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes. 110 mm diameter.

Item code 12.42.5.2 Providing and fixing on wall face unplasticised – PVC moulded fittings/ accessories for unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion. Bend 87.5°. 110 mm bend.

Item code 14.5.1 Renewing glass panes, with putty and nails wherever necessary including racking out the old putty: Float glass panes of nominal thickness 4 mm (weight not less than 10kg/sqm).

Item code 15.60 Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-incharge, beyond 50 m initial lead, for all leads including all lifts involved.

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