REPAIR MAINTENANCE TO SEWAGE LINES, MANHOLES GREASE TRAPS INCLUDING CLEANING OF SEWAGE LINES AT MAIN CAMP AND TECH AREA AT AFS TAMBARAM

Demolition of concrete of any description and in any position not otherwise specifically provided, complete all as specified and directed by Engineer-in-Charge.

Returning filling in incl spreading, leveling Watering and well ramming in layers n.exc 25cm, excavated hard/dense soil complete all as specified and directed by Engineer-in-Charge.

Removing excavated soil n.exc 250 m and depositing where directed at a level n.exc 1.5 m above the starting point complete all as specified and directed by Engineer-in-Charge.

Material and labour for providing Plain Cement Concrete 1:3:6, Nominal mix, type C2 using 40mm graded stone aggregate as in foundation including formwork complete all as specified and directed by Engineer-in-Charge.

Material and labour for providing Plain Cement Concrete 1:2:4 type B1 Nominal mix using 20mm graded stone aggregate for benching in manholes including formwork complete all as specified and directed by Engineer-in-Charge.

M&L providing Plain Cement Concrete 1:2:4, type B1 Nominal mix (using 20 mm graded aggregate) as in cills, steps, bands, copings, bed plates , etc including necessary form work, complete all as specified and directed by Engineer-in-Charge.

M&L for Mild steel TMT bars 10 mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips complete all as specified and directed by Engineer-in-Charge.

Taking down plaster of any type of description on brick walls including racking out joints, haunching for key scrubbing down in water inside manhole including taking out manholes cover and fitting back after the work is completed complete all as specified and directed by Engineer-in-Charge.

M&L for rendering 15mm thick on brick/ concrete surfaces with CM 1:4 in two coats (5mm thick settting coat with WP compound/liquid as per manufacturer's instructions over 10mm thick backing coat) finished even and smooth without using extra cement including mixing of liquid waterproofing compound as per manufacturers instructions on brick/concrete/masonry or in chajjas/parapet walls/manholes/drains etc complete all as specified and directed by Engineer-in-Charge.

Supply only Liquid water proofing compound as directed by Engr-in-Charge.

M&L Cement concrete bed to drain pipes 100mm dia including packing under, and haunching against the sides of pipes after they are laid and tested; in PCC 1:3:6, type C-2 complete all as specified and directed by Engineer-in-Charge.

Cleaning of choked water closet/Gully trap/Floor trap of bathroom/kitchen/wash basin up to first manhole complete all as specified and directed by Engineer-in-Charge. Note : (i) The supervisor shall collect of complaint slip from complaint cell from AGE B/R I Office and the time of completion of job is within 24 hours after detailment by JE/ Engineer-in-Charge. NOTE : (a) Cost of disposing of the waste / sludge etc in appropriate way shall deemed to be included in the unit quoted rate. (b) Any damage caused during cleaning shall be made good to entire satisfaction to Engr-in-Charge by the contractor without any extra cost.

Roding the sewage line with Jet rodding machine by Mechanical means with pressure Jet pump of 100 mm dia between manholes and gully trap /two adjointing manholes any depth and removing all foreign materials and sludge from the pipe line and making sewage line functional and disposing the waste in appropriate way complete all as specified and directed by Engineer-in-Charge.

All as per item ser No 30 above here-in-before but 150mm dia complete all as specified and directed by Engineer-in-Charge.

eported by 05:00 PM of every working day. (iii) Contractor or his representative shall report daily at 09:00 AM in the office of Engr-in-charge/ complaint cell to receive complaint slip and necessary directions. Complaints received from JE/Engr-in-charge through telephone message also shall be attended on the same day.

Cutting of bushes, vegetation, shrubs, brush wood, under growth etc. up to roots alround 4.00metre (in width) from the edges of existing Oxidation ponds, including surface dressing complete all as specified and directed by Engineer-in-Charge.

For septic tank of 500 users capacity.

For manholes upto 0.45metre deep from invert to top of manhole cover.

For manholes exceeding 0.45metre deep and not exceeding 1.5metre deep from invert to top of manhole cover.

For manholes exceeding 1.5metre deep to any depth with mechanical equipment.

Cleaning and De-sludging by removing semi solid sludge/solid sludge (Dry/wet condition) from the septic tank of any capacity at any depth mechanically in foul condition including necessary tools and plants required to removal of sludges and solid contents from the site complete all as specified and directed by Engineer-in-Charge. Note : The sludge obtained after de-sludging is contractors property as credit schedule contractor should remove the sludge out side defence land immediately in covered vehicle without any extra cost. Necessary safety precautions shall be provided by contractor and cost of the quoted rate shall deemed to be inclusive of above factor.

Cleaning of septic tank with mechanical equipment including bailing out water, from it and removing sludge and blockages from inlet and outlet of sewer lines including taking out the excavated sludge and carting away the same to a distance far away from residential/office area and cover the same with fresh earth disposing off by standard engineering practice as prescribed by local authority and recommissioning the septic tank including site clearance to a distance of 3 Metre around septic tank complete all as specified and directed by Engineer-in-Charge for the following capacity :-

Note for item No 01 to 63 : The following points should be adhered to:- (i) Contractor has to engage minimum two safaiwala with machineries and equipments and one supervisor with mobile phones without camera. The team must be reported in the complaint cell/ sub div in proper uniform and with all necessary T&P such as green female bamboo strips, iron rods, sewage rodding machine, buckets, rope, ladder, safety mask, etc for execution of the item. The quoted rate shall also be included the cost of conveyance of workers, supervisors, materials and T&P. (ii) Team of workers with T&P shall be attend the complaints of the entire area as directed by Engr-in-charge and the completion of work shall be r

(iv) Attendance register shall be maintained by Engr-in-charge at sub divn/ complaint cell. In case of absence of workers a penal recovery of Rs 600 per day per worker shall be imposed on contractor. (v) A complaint register shall be maintained by JE and proper record of complaints received and attended with date and time shall be recorded and shall be signed daily by both the parties. Complaint register shall be kept on record of Engr-in-Charge after completion of work. (vi) Complaint register shall be maintained by JE and proper record of complaints received and attended with date and time shall be recorded and signed by both the parties at the end of the day. (vii) Complaints of blockage of sewage line/ manhole/ nahani trap if unattended within 24 hours after issuance of complaint slips or telephonic direction a penalty of Rs 300/- per each complaint shall be imposed on contractor.

Cleaning, removing, deposited sludge, blockage from manholes, taking out the excavated sludge, cleaning the manholes neatly and carting away the same far away from buildings/living area and deposit at low lying area/ditches and cover with fresh earth on top and disposing off by standard engineering practice as prescribed by local authority all as directed by Engineer-in-Charge for the following capacity :-