CLEANING AND REPAIRS/REPLACEMENT OF DAMAGED SEWAGE LINES, MANHOLES, SUMPS AT MIL STN KANCHRAPARA UNDER GE BARRACKPORE

Cleaning and de-sludging solid/liquid sludge, excreta, night soil, waste water, etc from existing septic tank, soak well and sewage sump completely by mechanical pumping incl removal of sludge by closed container vehicles and dispose to screen chamber near STP for disposal. Note : 1. Rate shall deemed be included of using required capacity pumps, closed container vehicles, etc for disposal of waste. 2. Rate shall include washing and cleaning of de-sludged septic tank, soak well and sump walls and bed by clean water and bleaching powder. 3. Work shall be measured and paid for de-sludging of waster water (w/o cleaning) where required after an interval of 3 months from already de-sludged septic tank, soak well, etc due to accumulation of waste water from sanitary annexe due to raising of GWT.

De-sludging/de-silting and cleaning of existing manholes and gully traps etc of any depth and size including taking out sludge/ slit, other foreign materials, waste water, etc by mechanical pumping including removal of sludge by closed container vehicles and dispose to screen chamber near STP for disposal.

Systematically cleaning and de-silting/de-sludging of blocked sewage/ waste pipe of 100mm/110mm bore drain pipe by rodding with using steel rod or split bamboo sticks thoroughly from both sides between adjacent manholes still to get clear flow of sewage line is observed, passing knots, kamti and disc of required size or pumping out liquid waste /sewage, plugging and diverting the flow to the connected gully traps, manholes, etc for removal mechanically and dispose to screen chamber near STP for disposal complete all as specified and as directed.

All as per item No 03 here in before but 150mm bore drain pipe complete all as specified and as directed.

All as per item No 03 here in before but 200mm/300mm bore drain pipe complete all as specified and as directed.

Opening & cleaning of blockage from EWC/IWC/ kitchen & bath traps of any pattern by rodding or manually upto 1st manhole complete all as specified and as directed.

Demolition of cement concrete (Reinforced) of any description and in any position not otherwise specifically provided for complete all as directed.

M & L for precast RCC cover slab, 1:1.5:3 type A-1,(Using 20 mm graded crushed stone aggregate ) as in drain/manhole cover slab etc., and set in cement mortar 1:4 including necessary form work complete all as specified and as directed.

M & L for mild steel TMT bars 8 mm dia cut to length, bent to shape as required including cranking, bending spirally for hooping for columns,hooking ends and binding with mild steel wire(annealed) not less than 0.9mm dia as in reinforcement bar complete all as specified and as directed.

Demolition of brick or stone masonry work built in cement mortar including all quoins, arches, pillars etc complete all as specified and as directed.