COMPREHENSIVE MAINTENANCE OF SEWAGE LINE INCLUDING CLEANING OF MAN HOLES FILTER BED AND SEPTIC TANK ETC AND REPAIRS TO SEWAGE LINE IN ZONE A AND C AREA OTM ACCN AT ZONE B AND MD ACCN AT ZONE B IN INS RAJALI NAS ARAKKONAM

Comprehensive maintenance of sewage line of various diameter and depth and floor/Nahani gully traps, water closet of various size in buildings located with the following :- (a) Cleaning and removal of blockage/clogging in sewer lines including rodding by manual / machineries. (b) -ditto- all as per item 1(a) hereinbefore but in floor/Nahani/Gully traps. (c) Removal of blockage/clogging in all water closets. (d) Removal of sludge obtained from Item Ser No 1(a) to 1(c) hereinbefore shall be taken as credit complete all as specified and as directed by Engineer-in-Charge. Notes :- (i) The unit rate quoted by the tenderer is inclusive of requirement of number of persons for attending day to day maintenance of sewer lines etc. The requirement shall be assessed by the tenderer and accordingly the unit rates shall be arrived at. No extra cost whatsoever shall be admissible on this account. (ii) The contractor shall provide the sufficient labourers for the above works and they should report daily including sundays and holidays in the morning at 09:00 AM to AGE B/R - II of GE (M) NAS Arakkonam 1.01 (ii) The following areas shall be maintained by the contractor under the item No 1 mentioned above:- (aa) NORA (ab) Technical Area (ac) Defence Civilian accommodation at poigaipakkam (ad) TS, Arakkonam and other buildings in Zone `A’ area (iii) The contractor shall provide the daily minimum 02 Nos of labourers for the above works and they should report daily in the morning at 09.00 AM to AGE B/R II NAS Arakkonam

Pumping out sludge including water from the soak pit/septic tank/Manholes depth more than 2 M at main sewage line (i.e) not covered above Item No.1.etc. mechanically by using tipper with tanker and non clog sewage pump set arrangement including foot valve, necessary draining out pipe etc and removing all foreign materials, sludge, water including cleaning the soak pit/septic tank/manholes etc complete all as specified and directed by Engineer-in-Charge. Note : (a) The sludge removed shall be taken outside MD land for disposal as and when removed from the soak pit/septic tank/manholes. The cost of disposal shall be inclusive of the unit rate quoted by the tenderers under this item. No extra cost on this account is admissible. The credit offered by the department for the sludge removed shall be deducted from the payment made to the contractor for the entire quantity. (b) Pumping shall be carried out in the presence of MES authorised representative.

Taking off existing manholes covers & cleaning of manholes by using mechanical high pressure sewer cleaning machines or similary machineries to Depth not exceeding 1 metre by de-watering and taking off the rubbish / sludge etc., removing the same up to 50 m distance and put into newly excavated pits of suitable size and covering with excavated earth and placing back in position the removed covers complete all as specified and directed.

All as per item No 3 as above but Depth exceeding 1 metre and not exceeding 3 metre complete all as specified and as directed.

All as per item No 3 as above but Depth exceeding 3 metre complete all as specified and as directed.

Excavation in trenches not exc. 1.50 m wide and not exc. 1.50 m in depth for foundation etc. or for manholes, cesspits, shafts etc not exceeding 10 Sqm on plan and getting out in soft/loose soil complete all as specified and directed.

All as item No 6 above but depth exceeding 1.50 metre but not exceeding 3.00 metre and getting out in hard/dense soil complete all as specified and as directed

All as item No 6 above but depth exceeding 3 metre but not exceeding 4.50 metre and getting out in hard/dense soil complete all as specified and as directed.

Returning, filling in, including spreading, leveling, watering and well ramming in layers not exceeding 25 cm thick in each layer as in hard / dense soil complete all as specified and directed.

Removing surplus excavated material (SOIL) to distance not exc. 50 m and depositing where directed at a level not exceeding 1.50 m above the starting point complete all as specified and directed

Demolition of brick work or stone/boulder masonry, built in cement mortar or cement lime mortar including all quoins, arches, pillars, etc but excluding ashlars facings dressed stone work and pre cast concrete articles complete all as specified and directed

Material and Labour for brick work with sub class ‘B’ old size bricks straight or curved on plan exc. 6.00 m mean radius built in cement mortar 1:4 complete all as specified and directed.

Material and Labour for 15 mm thick rendering on fair faces of brick work or concrete surfaces with cement mortar 1:4 finished even and smooth without using extra cement complete all as specified and directed.

Demolition of reinforced cement concrete in ground floors and pavings n exc 15cm thickness including cutting of reinforcement bars to facilitate demolition complete all as specified and directed.

Material and Labour for providing pre-cast cement concrete as in cover slabs for manholes and similar items with plain faces in cement concrete 1:2:4 type B-1, using 20 mm graded crushed stone aggregate and setting in cement mortar 1:6 including necessary form work complete all as specified and directed.

Material and Labour 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 and binding with and including mild steel wire (annealed) not less than 0.9 mm dia or securing with clips complete all as specified and directed.

Material and Labour for mild steel TMT bars 6 to 8 mm dia, cut to length, bent to shape required including cranking, bending spirally for hooping for columns and binding with and including mild steel wire (annealed) not less than 0.9 mm dia or securing with clips complete all as specified and directed.

Demolition of cement concrete (unreinforced) of any description in bed concrete not exceeding 15 cm thick below ground level complete all as specified and as directed

Material and Labour for providing plain cement concrete, type D-2, 1:4:8 (using 40 mm graded crushed stone aggregate) as in sub base of floor, foundation, filling and mass concrete complete all as specified and directed.

Material and labour for plain cement concrete 1:2:4 type B1 using 20 mm graded stone aggregate as in surface channels and drains complete all as specified and as directed

Extra for forming fair finished drain or channel 45cm inner girth in cement concrete, using extra cement, including forms, moulds, mitred/stopped ends etc complete all as specified and as directed

Material and labour for PCC 1:3:6 type C1 using 20 mm graded stone aggregate as in coping including necessary form work etc complete all as specified and as directed.

Demolition and breaking up drain pipes internal dia of pipe in 150mm (salt glazed ware, AC or reinforced concrete ) set in cement mortar complete all as specified and as directed.

Demolition and breaking up drain pipes internal dia of pipe in 200mm (salt glazed ware, AC or reinforced concrete ) set in cement mortar complete all as specified and as directed

Material and Labour for reinforced concrete pipes 150mm dia class NP-2 for following dia of pipe laid and jointed complete with collars all as specified and directed.

All as per item No 26 hereinbefore but 200mm dia complete all as specified and as directed

Material and Labour for cement concrete 1:3:6, type C-2 (using 40 mm graded crushed stone aggregate) for 150mm pipe concrete bed to drain pipes of including packing under and haunching against the sides of pipe after they are laid and tested including necessary form work for the following bore of drain complete all as specified and as directed.

All as per item No 27 hereinbefore but 200mm dia

Material and Labour for cutting into existing manhole for connecting new drain, making good to pipe and rendering, cutting out existing benching for and forming branch channel (½ round or ¾ section) in cement concrete 1:2:4 type B-1 smooth finished, and reforming benching as required for 150 mm dia pipe complete all as specified and directed.

All as per item No 29 here-in-before but 200 mm internal dia of pipes

Material and labour for "M" sand filling in trenches as a cushioning/bedding and haunching to PVC/UPVC pipe including watering complete all as specified and as directed.

Material and labour for UPVC (SWR) Type B, 200mm Nominal outer dia pipe laid and jointed complete with all fixtures and fiiting complete all as specified and as directed.

Material and labour for UPVC (SWR) Type B, 250mm Nominal outer dia pipe laid and jointed complete with all fixtures and fiiting complete all as specified and as directed.

Supply and fix in repairs PVC (SWR) pipes 110 mm dia single socketed, in any length with rubber ring joints, laid in trenches or in floors complete all as specified and as directed.

Supply and fix in repairs PVC (SWR) pipes 75 mm dia single socketed, in any length with rubber ring joints, laid in trenches or in floors complete all as specified and as directed

Taking down soil / waste and rainwater pipes (any size or pattern) including all fittings and cleaning complete all as specified and as directed

Supply and fix in repairs 75 mm bore PVC (SWR) pipes single socketed, in any length with rubber ring joints fixed to walls complete all as specified and as directed.

Supply and fix in repairs 110 mm dia bore PVC (SWR) pipes single socketed, in any length with rubber ring joints fixed to walls complete all as specified and as directed.

Supply and fix in repairs 75 mm bore PVC (SWR) bends with access door complete all as specified and as directed

Supply and fix in repairs 75 mm bore PVC (SWR) bends complete all as specified and as directed

Supply and fix in repairs 75 mm dia bore PVC (SWR) branch piece,single (single Y) equal or unequal with access door complete all as specified and as directed.

Supply and fix in repairs 75 mm dia bore PVC (SWR) branch piece,double (double Y) equal or unequal with access door complete all as specified and as directed.

Supply and fix in repairs 75 mm dia bore PVC (SWR) junction single,(single T) equal or un equal with access door complete all as specified and as directed.

Supply and fix in repairs 75 mm dia bore PVC (SWR) vent cowl complete all as specified and as directed.

Supply and fix in repairs 110 mm dia bore PVC (SWR) bends any radius with access door complete all as specified and as directed

Supply and fix in repairs 110 mm dia bore PVC (SWR) bends any radius complete all as specified and as directed

Supply and fix in repairs 110 mm dia bore PVC (SWR) branch piece, single (single Y) equal or un equal with access door complete all as specified and as directed.

Supply and fix in repairs 110 mm dia bore PVC (SWR) branch piece, double (double Y) equal or un equal with access door complete all as specified and as directed

Supply and fix in repairs 110 mm dia bore PVC (SWR) junction single, (single T) equal or un equal with access door complete all as specified and as directed

Supply and fix in repairs 110 mm dia bore PVC (SWR) vent cowl complete all as specified and as directed

S&F in repair water closet white vitreous china ware Orissa pattern of size 580x440mm with integral foot rest ‘P’ or ‘S’ trap 100mm dia front or back inlet incl provision of PCC bedding type B1, 1:2:4 ( 20 mm graded aggregate) and connection pipes ( excluding flushing cistern but including flushing pipe 32 mm dia MS chromium plated) (rate also include for taking off unhygienic of WC) complete all as specified and as directed

Supply and fix in repairs vitreous china wash down water closet pedestal pattern white including trap connections to drain and to flush pipe anti-syphonic pipe etc., complete all as specified and as directed

Supply and fix in repairs 32/ 40 mm flexible PVC waste pipe suitable for wash hand basin, urinals and Kitchen Sink complete all as specified and as directed

Supply and fix in repairs stainless steel grating doom 100mm dia complete all as specified and as directed

Supply and fix in repairs plastic water closet seat, black, closed pattern with flat bottom, and cover and mild steel chromium plated or aluminium hinging device complete all as specified and as directed

Dismantling wrought iron or mild steel work of any description not otherwise provided for complete all as specified and directed

S&F for mild steel framed work such as grills, Angles, guard bars etc with ends of bars shouldered and/or riveted or forged into spikes framed guard bars and similar work conforming to Fe-290. Gde E-165 complete all as specified and as directed.

Supply and fix for plates (plain or chequered) channels, square cut or notched (ordinary or counter sunk) forming holes includinjg MS butt hinges and handle, confirming Fe-290 (Gde E-165) complete all as specified and as directed

Supply and fix in repairs clamp out of 50mm by 5mm flat iron and 16 mm dia round iron stay, including bolts and nuts and securing ends of stay to wall or roof for 110 mm bore cast iron/ PVC pipe including dismantling complete all as specified and as directed

All as per item No.60 here-in-before but for 75mm bore of pipe complete all as specified and as directed

S&F in repairs of 20mm Low density poly ethylene pipes (LDPE) of pressure rating 6 kg/ cm2 pipe Fixing to sunken floors, Washout pipe etc… as spouts, complete all as specified and as directed by Engr-in-charge. (Note: rate Incl of cutting holes, fixing pipes, packing with CM 1:4 with Water proof liquid, making good to the surface and leak proof etc...(Ht. of the bldg may vary from Ground floor to 5th Floor (Approx Ht 26m)) complete all as specified and as directed

Site clearance and removal of the spoil to a distance exceeding 50 meter but not exceeding 250 meter complete all as specified and directed

S & F in repair Grating doom 100mm dia of PTMT (Minimum weight 25 gms) complete all as specified and directed

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