DE-SLUDGING OF SEPTIC TANKS CLEANING OF SEWAGE LINE, MANHOLES, REPAIRS/REPLACEMENT OF SEWAGE LINES, MANHOLES, MANHOLE COVERS, SEPTIC TANK AND CONNECTED WORKS IN TECHNICAL AREA AT AF STN YELAHANKA

Amount

Cleaning of blocked / chocked Nahani trap / floor trap/WC/ Wash basin/, including drain / sewer / sewage line of any description (SGSW / RCC / CI pipe/SWR Pipe) of 75mm/100 mm / 150 mm / 200 mm dia and any depth by rodding or by mechanical means and well flushing the complete drain / sewer line upto first manhole to the entire satisfaction of Engineer – in - charge with and including taking out and re-fixing of manhole covers where required complete all as specified and directed.

Cleaning of manhole to manhole, using high pressure water jetting machine, including cleaning/ clearing blockages with all tools and labours as per the site requirement pipe size 150 mm and over including man holes through chasis mounted Diesel run vehicles mounted hydraulic operated high pressure suction cum geting sewer cleaning machine KAMBI-10 LCHB fitted with imported international standard pumps having minimum of 3000 litres to 4500 litres sucking capacity including skilled operator supervising engineer for cleaning/partial desiliting of manholes and sewer line as per guide lines laid in IS -11972 (1987) and complete cleaning of site all as directed by Engineer in charge Note for item No 1 & 2 :- (a) Jetting of sewer line by high pressure jetting system of 2200w PSI/Suction. (b) The complaint has to be rectified with in 24 hrs from the complaint assign to the contractor failing which penalty will be imposed @500/- per complaint per day. (c) The rates quoted in the above shedule of items includes Cost of T&P like sever rods,bamboosand necessary cleaning items ,etc complete.

M&L for de-watering /de sluding of sewge well and septic tank of any size & approx 2 to 3 metre depth ,excavation of waste water from collection tank using 4500 litres to 5000 litres vaccum suction tanker, De watering of liquid or semi liquid waste by water sucking hydraulic pressure machine including cleaning of all sludge silt residue of both organic nature by manual labour or by mechanical scrappers etc in any position & disposal off all the waste outside the defeneland the de-sludging of sewage sump is to be carried out upto the bottom slab of sewage sump/ sewage well complete. The sewage well wall & bottom slab to be cleaned by water with high presurre up to entire satisfaction of Engr-in-charge , neccessary safety precaution to be adhere during working all as specified and directed. Note :- (a) Jetting of sewer line by high pressure jetting system of 2200w PSI/Suction. (b) The complaint has to be rectified with in 24 hrs from the complaint assign to the contracor failing which penalty will be imposed @500/- per complaint per day.

Taking off existing manholes covers & cleaning of manholes depth up to 2 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.

Taking off existing manholes covers & cleaning of grease pit (any type) not exceeding 3 metre depth 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.

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

M&L Pre-cast cement concrete block masonry with solid blocks, exc. 10 cm in width and setting in mortar, 1:6 type C1 1:3:6 (using 20 mm grared stone aggregate) complete all as specified and directed.

M&L for Brickwork with sub class ‘B’ bricks straight or curved on plan exc 6 m mean radius built in CM 1:4 all as specified and directed.

M&L 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.

M&L for providing factory made pre-cast cement concrete cover slabs of grade M-30 in Manholes with FI 90x1.35 thick outer cover and reinforcement of 8mm dia TMT bars @ 100mm c/c and 16mm MS bars for flushed handles as specified and directed for the following size.

(a) 750x600x90mm

(b) 600x600x90mm

(b) 600x600x90mm

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 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 directed

M&L for 150mm dia reinforced concrete pipes class NP-2 laid and jointed complete with collars all as specified and directed.

M&L for 200mm dia reinforced concrete pipes class NP-2 for following dia of pipe laid and jointed complete with collars all as specified and directed.

M & L for cement concrete 1:3:6, type C-2 (using 40 mm graded crushed stone aggregate) for 150mm dia 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 drain complete all as specified and directed.

M & L for cement concrete 1:3:6, type C-2 (using 40 mm graded crushed stone aggregate) for 200mm dia 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 for drain complete all as specified and directed.

Demolition of cement concrete (unreinforced) in ground floor and paving not exc 15 cm thick below or above ground level all as directed.

M & L 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.

M & L for providing plain cement concrete type B-1, 1:2:4, (using 20 mm graded crushed stone aggregate), as in benching, coping, channel of manholes and the like including weathering, slightly rounded or chamfered angles & throating as directed including necessary form work as required complete all as specified and directed.

M & L 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.

S & F in repairs 110 mm bore PVC (SWR) pipe single socketed, in any length with rubber ring joint laid in trenches or in floors/wall complete all as specified and directed.

S & F in repairs 75 mm bore PVC (SWR) pipe single socketed, in any length with rubber ring joint laid in trenches or in floors/wall complete all as specified and directed.

S&F in repairs PVC (SWR) gully trap size 125/110 mm setting and jointing with solvent cement all as specifed and directed.

S&F PVC in repairs (SWR) vent cowl 75mm dia including taking down old unsuitable vent cowl all as specified and directed.

S&F PVC in repairs (SWR) vent cowl 110 mm dia including taking down old unsuitable vent cowl all as specfied.

S&F PVC in repairs waste pipes 32/40 mm dia for urinal, WHB or sink, 600 mm long all as specified and directed.

S&F PVC in repairs (SWR) 110mm dia bend any radius all as specified and directed.

S&F PVC in repairs 75mm dia (SWR) bends any radius all as specified and directed

S & F in repairs PVC(SWR)110 mm singleT all as specified and directed.

S&F PVC in repairs (SWR) 75 mm single T all as specified and directed.

S&F PVC in repairs (SWR) 110mm dia branch pieces single (Single Y) equal or unequal all as specified and directed.

S&F PVC in repairs (SWR) 75 mm dia branch pieces single (Single Y) equal or unequal all as specified and directed.

M&L in repairs 75 MM PVC (SWR) floor trap, plain with grating including jointing with solvent cement all as spceified and directed.

S&F in repairs Grating dome 100 mm dia stainless steel with or with out hole all as specified and 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 exc. 10 Sqm on plan and getting out in soft / loose soil complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc. 25 cm thick in each layer as in soft / loose 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 exc. 1.50 m above the starting point complete all as specified and directed.

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