Refurbishment of drainage network of MG MARG, Gangtok into modern drainage system by creating improvised service line network with rain water harvesting and allied facilities

Amount

Clearance of Debris, , head load etc by engaging casul labour, since the debris is accumulation of sewage waste, special protective gear and other safety features to be provided to the laboures working in difficult contidions

Excavation in foundation trenches in mixed soil I/c throwing of spoils within 30 m lead and 1.5 m lift all complete: NOTE( Since Excavation at Side and Front Drain Required dismantling of Existing footpath carefully by ensuring safety to the existing service line network, and since all these work need to be carried out during non public hour i.e mainly during night, hence we have to use the area twice as labour rates and night shift work make everything costilier)

P/L 1:3:6 c.c over the soling surface all complete

Providing and Laying Plum concrete in 1:2:4 c.c. (1cement, 2coarse sand, 4clean hard graded stone chips of 20 mm down nominal gauge) with 50% clean hard stone of sizes not exceeding 15cm including shuttering, compacting and curing complete, as per the direction of Engineer in Charge. Side wall for soil protection

Providing and Laying Mixed Earth with Ramming and watering all complete

REINFORCED CEMENT CONCRETE CAST IN SITU

1:1.5:3 Mix (1cement, 1.5 coarse sand 3 graded stone aggregate 20mm and down nominal gauge)

with provisions for chamber for sewage network as well

S/B/B and placing in position of steel reinforcement as per design, specification and direction of Engineer in Charge

Providing, Fixing and Removing form work for Casting RCC items

To be USE as plank to support the earth during placing of DWC PIPES

Supplying, fabricating, fitting and fixing tubular roof truss i/c. putty, hoisting, fixing in position and applying a coat of priming of approved steel primer welded and bolted i/c. special shape washers etc complete, to chanallise the rain water in the vacat area and to make proper discharge in drainage network

Providing Fittings and fixing 24 BWG GCI sheet Roofing as per SOR 2020

Providing/F/F Ridges of 60cm as per SOR 2020

P/F/F 16mm thick valley of 90cm as per SOR 2020

Providing fitting and fixing 30cm deep 24BWG GP sheet eaves board all completes

Providing and placing on terrace high density polyethylene water storage tank with man hole lid and suitable locking arrangement including making holes for inlet, out let and ball cock including testing etc. all complete: (Sintex or equivalent) 2000liters, for storage of rain water to be used in cleaning of drains as an when required or to be used in emergency

Providing/ Fitting /Fixing / of Various mineral filled multilayer polypropylene low noise drainage piping system, SWR drainage pipe and fittings from house to inspection chamber

110M, Silencio

160MM Silenco

Fittings, Silencio

Providing/ Fitting /Fixing / of Various size of double wall corrugated DWCpipe of polyethylene (PE)/polypropylene(PP) with smooth internal and corrugurated external surface for non pressure underground draiange and sewerage systems all complete as per the direction of Engineer -Incharge

with provisions for replacement of seware pipe during excavation/ execution of drain network/ relocation

800 MM D-REX

300 MM D-REX

200 MM D-REX

COUPLER WITH RUBBER RINGS

PIPIE JOINT LUBRICANT 500GM

RUBBLE RING

Providing/fitting/Fixing surface drainage system made up of modified polypropylene (PP)Channel for discharging the surface runoff all complete as per Direction of Engineer Incharge

HAURATON STANDARD 200 (1000X256X235)MM

Providing/fitting/Fixing inspection chamber and man hole made up of modified polypropylene (PP) to channalise the flow in drainage system all complete as per Direction of Engineer Incharge

DRAIN HULK (600X1250)

Providing/fitting/Fixing polyolefin cabel channel for service line network all complete as per Direction of Engineer Incharge

MULTIREX (340*230*1000)

Providing and Laying Chequers tiles in on flooring over 12mm thick cement plaster (1cement, 3coarsed sand) 1:3 bare and jointed with white cement slurry.

Carriage of stock Materials from store to work site . (Cement/Steel)

Carriage of non-stock materials i.e. Sand and stone from river bed to work site within 40 Km radius.

Carriage of non-stock materials I.e. Stone/Aggregates within 40 Km radius.

Providing and fixing chlorinated Polyvinyl Chloride (CPVC) Pipes, having thermal stability for hot & cold water supplu, including all CPVC plain and brass threaded fittings, including fixing the pipe with clamps at 1: 00 m spacing. This includes j

This provisions is kept in order to restored the supply line during execution of work for drainage network

Relocation/replacement of Electrical network for creation of passage for drainage network, to be executed by same contractor for smooth cordination and perfect implementation, payment to be made as per actual work

Sub Total (A)

Add for Labour Cess @1% on A

Add for GST @18% on A

MANOJ KUMAR AGARWAL

NLM Infra Projects