CLEANING / REPAIRS OF SEWAGE LINE, MANHOLES, SEPTIC TANK AND MINE ITEMS IN DOMESTIC AREA AT AFS THANJAVUR

Cleaning of existing SGSW / CI / PVC (SWR) sewage line blockage by rodding from manhole to manhole, removing and disposing the sludge, silt, debris, solid materials etc, any diameter of pipe, off domestic area premises testing of sewage line by flushing with water complete all as specified and as directed.

Cleaning of manholes of any size and depth by removing MH covers, removing of accumulated liquid, sludge / sediments by manually / mechanical means, transporting the fluid / sludge etc in covered containers by manually or mechanically and burying the same in pits where directed including necessary excavation refill and disposal of surplus soil etc complete, cleaning with fresh water, placing the MH covers intact in position complete all as specified and as directed.

Cleaning of blockage in nahani trap / floor trap in ground floor and upper floors upto junction of down take pipe, flushing with water including removing the grating, oval access door/cleaning eye etc and refixing the same in position after removing the sludge, silt, debris etc, and disposal off the same domestic area premises complete all as specified and as directed. Note:- The rate quoted for srl item No 02 & 03 shall deemed to include cost for any excavation, RFR etc that may be necessary for cleaning the blockage. However any pipe requiring replacement will only be measured under appropriate item here-in-after.

Clearing of blockage in gully trap and / or upto first manhole, flushing with water including removing the top cover and refixing the same in position after removing the sludge, silt, debris etc and disposal off the same outside domestic area premises complete all as specified and as directed.

Clearing of blockage in water closet (any type) in ground floor including “P” or “S” trap upto junction of down take pipe and / or upto first manhole including removing the access door of bend and refixing the same in position after removing the sludge, silt, debris, solid materials etc, flushing with water and disposal of sludge silt debris, solid materials etc outside domestic area premises complete all as specified and as directed.

Clearing of blockage in water closet (any type) in upper floor including in “P” or “S” trap upto junction of downtake pipe including removing the access door of bend and refixing the same in position after removing the sludge silt, debris, solid materials etc, flushing with water and disposal of sludge, silt, debris, solid materials etc outside domestic area premises complete all as specified and as directed.

Cleaning of Grease trap any type and size desilting and dewatering by mechanical means by using sewage tanker vehicles fitted with suction pumps, clearing off shrubs/bushes/vegetation found around 3 mtrs from external edge on all sides of Grease trap and making good to reuse the Grease trap including disposing the sludge, silt, debris, solid materials etc outside defence land premises for grease trap complete all as specified and as directed. Note :- Cleaning of grease trap shall be carried out in every month before sanitary inspection.

Cleaning of septic tank by desilting and dewatering by mechnical means by using sewage tanker vehicles fitted with suction pumps, clearing off shrubs / bushes / vegetation found around 3m from external edge on all sides of septic tank and making good to reuse the septic tank including disposing the sludge, silt, debris, solid materials etc outside defence land premises for the following sizes of septic tanks complete all as specified and as directed:- Note:- Safety precaution should be taken before cleaning of septic tank during the period of contract. If any casualty contractor is fully responsible and no claim whatsoever will be entertained due to non-compliance of safety precautions.

Masonry septic tank of 10 users capacity

Masonry septic tank of 25 users capacity

Masonry septic tank of 50 users capacity

Masonry septic tank of 100 users capacity

Masonry septic tank of 150 users capacity

Masonry septic tank of 200 users capacity

Masonry septic tank of 250 users capacity

Masonry septic tank of 350 users capacity

Hume pipe septic tank of 50 users capacity

Cleaning of soak well by removing the aggregate of filter media by mechanical means or by manual lifting and screening the material obtained from soak well, washing and refilling in filter bed, including making good by filling new aggregate, clearing off shrubs / bushes / vegetation found around 3m from external edge on all sides of the soak well and making good to reuse the soak well including disposal of powdered aggregate / silt / sludge outside domestic area premises of soak wells of the following sizes of all as directed. Note:- Safety precaution should be taken before cleaning of soak wellduring the period of contract. If any casualty contractor is fully responsible and no claim whatsoever will be entertained due to non-compliance of safety precautions.

Masonry soak well 1200mm dia and 3000 mm deep

Masonry soak well 1800mm dia and 4500mm deep

Masonry soak well 2400mm dia and 3000mm deep

Masonry soak well 2400mm dia and 4500mm deep

Masonry soak well 2700mm dia and 3000 mm deep

Masonry soak well 3000mm dia and 4500mm deep

Cleaning of septic tank/ manholes by dewatering by mechnical means by using sewage tanker vehicles fitted with suction pumps complete all as specified and as directed. (capacity of 8000kg per load). Note (for srl item No 01 to 10) :- (i) Safety precaution should be taken before cleaning of septic tank during the period of contract. If any casualty contractor is fully responsible and no claim whatsoever will be entertained due to non-compliance of safety precautions. (ii) The contractor should deploy his rep to collect complaint slips at the O/o AGE B/R-I at 0900hrs daily. The complaint slips will be deposited by 1700hrs on the same day. The contractor will deploy two labourers on daily basis to attend complaints and shall be available at Thanjavur Air base between 0900hrs to 1700hrs daily. (iii) For removal of sewage mucks, no manual labour will be allowed. Only mechanical means is authorised / permitted.

Excavation in trenches n.exc. 1.5m wide and n.exc. 1.5m in depth for foundation etc. and getting out in hard / dense soil complete all as specified and as directed.

Returning, filling in, including spreading, watering and well ramming in layers n.exc 25cm thick using soils complete all as specified and as directed.

Removing excavated material n.exc 50m and depositing where directed at a level n.exc 1.5m above the starting point as in soils complete all as specified and as directed.

M&L in repairs Concrete bed to 150 mm bore drain pipes in PCC 1:3:6 type C-2 incl packing under and haunching against the sides of pipes after they are laid and tested complete all as specified and as directed.

S&Fin repair 150mm bore PVC (SWR) pipes single socketed, in any length , laid in trenches or in floors complete all as specified and as directed.

Demolition of brick work, stone / boulder masonry built in cement mortar including all quoins, arches, pillars, etc, but excluding ashlar facings, dressed stonework and precast concrete articles complete all as specified and as directed.

M&L brick work with subclass ‘B’ old size bricks straight or curved on plan exc 6 m mean radius built in CM 1:6 complete all as specified and as directed.

M&L cement concrete type B1 1:2:4 (using 20 mm size graded stone aggregate) as in benching/copings including necessary use and waste of form work complete all as specified and as directed.

Rendering 15mm thick in CM 1:4 on fair faces of brick or concrete surfaces finished even and smooth without using extra cement complete all as specified and as directed.

Cutting in to existing manholes for connecting new drains, making good to pipe and rendering cutting out existing benching for and forming branch channel (1/2 round or 3/4 section) in cement concrete 1:2:4 type B1 smooth finished and reforming benching as required for bore of pipe 100/150 mm complete all as specified and as directed.