Construction of storm water drain and pipeline at Arangasamy nagar, kumarasamy nagar and padmanaba nagarin ward no. 23 East Zone.

Amount

Earth work for drain to required depth, either by cutting and disposal of excavated soil to areas of fill or by filling with earth suitable for filling brought from areas of cutting or borrow pits in all kinds of soils except rock requiring blasting

Conveyance the excess earth or earth not suitable for refilling, dumping and spreading, levelling of the same at places of dump approved by departmental officers and as directed including lorry hire charges, labour for loading, unloading, spreading, leveling, making approaches for areas of dumps etc., complete.

Flooring with bed of cement concrete 1:4:8 (One part of cement, four parts of sand and eight parts of stone jelly by volume) using 40 mm thick granite hard broken stones, all machine mixed, laid to uniform thickness of 100mm and top left rought to receive floor finish including all labour charges for concreting, ramming, curing etc, and providing expansion joints, slopes & grades if any etc., complete complying with relevant standard specifications at all leads & lifts inside the building.

Fly ash Brick work in cement mortar 1:5 mix (one cement five sand) using II class table molded bricks chamber burnt bricks of size 9" X 4 1/2" X 3" for the following including curing etc., completed.

Supplying and erecting centering for sides and soffits including supports and strutting for plain surfaces such as Plain cement concrete walls etc., with all cross bracing etc., including decentering after curing period,complete complying with standard specifications, at all leads inside the building, at all heights.

Drain walls with of cement concrete 1:3:6 (One part of cement, three parts of sand and six parts of stone jelly by volume) using 20 mm thick granite hard broken stones, all machine mixed, laid to the specified thickness including all labour charges for concreting, ramming, curing etc, complete complying with relevant standard specifications

Plastering with C.M.1:5 mix with 12mm thick etc., complete as per the direction of departmental officers.

Supplying and erecting Centering for sides and soffits including supports and strutting upto 3.29m high for plane surfaces such as RCC Slabs, Rectangular beams, TEE or ELL beams, Lintels, Bed blocks, Staircase waist, Landing slab, Landing beam and Canopy etc., in all floors to centre etc., complete and as directed.

Reinforced Cement concrete 1:1.5:3 (one cement, one and a half sand and three aggregate) using 20mm hard broken granite stone jelly for all RCC items of work excluding centering, shuttering and cost of reinforcement grill but including curing finishing, vibrator charges etc., complete and also including fixing fan clamps and fixtures in RCC works wherever necessary as directed by departmental officer etc., complete

Supplying, fabricating and placing in position TMT/CTD rods for all RCC works including cost of steel and binding wire also in all floors complete complying with standard specification

Plain cement concrete 1:2:4 (One part of cement, two parts of sand and Four parts of stone jelly by volume) using 20 mm thick granite hard broken stones, all machine mixed, laid to the specified thickness including all labour charges for concreting, ramming, curing etc, complete complying with relevant standard specifications

Supply &Fabrication of Galvolume sheets complete direction as per the departmental officers

Supply &Fabrication of MS rods and angles complete direction as per the departmental officers

Supply & Fixing of 750mm dia SFRC man hole cover of heavy duty with frame as per the standard specification and instruction of departmental officers

Supply and delivery of submersible centrifugal sewage non-clog pumps, vertical spindle type pump , wear resistance with submersible motor for the various duty conditions. Pump shall be capable of handling min 100 mm solid size with sewage specific gravity of up to 1.05. Pump shall be of robust construction, Liquid passages shall be finished smooth and designed as to allow free passage to solids. Pump Impeller should be of Non-clog semi open type , single vane / multi vane preferably contra bloc or vortex impeller design. Double mechanical seal with silicon carbide faces should be provided to protect the motor from ingress of sewage along the shaft. The critical speed of the rotor shall be at least 30% above the operating speed. Pumps should have double bearings between the pump & motor. The bearings life shall be minimum 100,000 hrs of operation with greased for life. Pump should be provided with automatic coupling device including pedestal, duck foot bend, stainless steel guide pipe or related accessories of suitable size to facilitate lifting and lowering into guide rails for easy maintenance. Pump shall be provided with a stainless steel lifting chain conforming to BS 970 Gr 304. Pump speed shall be of 9600 rpm for high duty pumps and 960/1450 rpm for low duty pumpsets. Casing and impeller should be of CI Gr. FG 260:IS210 more preferably with hardened impeller.Shaft should be of stainless steel AISI 410. All the fasteners and bolts shall be of AISI 410.The submersible motor shall be operated with 3ph, 415 V(+or– 10%), 50Hz(+or-5 %) dry induction type. Motor shall be capable of giving rated output without reduction in the expected life span when operated continuously. The rotating assembly shall be dynamically balanced as per standards. The starting current of the motor shall not exceed 200% of rated full load current for Star / Delta or ATS starting under any circumstances .The motor shall be suitable for full voltage star delta / ATS starting. The locked rotor current of the motor shall not exceed 600% of full load current unless otherwise specified. Motor shall be designed to withstand 120% of rated speed for two minutes without any mechanical damage, in either direction of rotation. The motor vibration shall be within the limit specified in applicable standards . Motor should be of IE2, explosion proof compatible for VFD operation together with star-Delta /ATS starter, protection against increase in stator winding temperature (15 deg Celsius), bearing temperature, leakage in the stator housing and terminal box shall be provided and to be suitably interlocked with the control panel for tripping the pump in case of increase in temperature beyond set limit. Insulation class shall be of “Class H” and degree of protection shall be of IP 68 as per IS 4691. Motor shall be suitable for continuous operation in fully submerged or partially submerged condition.The pumpset shall be supplied with power cable of PVC insulated and PVC sheathed, copper, flexible, round type with required conductor size and number of cores as per starting method and of specified length for continuous use under water and air. The control cable of PVC insulated, PVC sheathed, flexible for stator winding temperature sensor 3core x 1.5 sq.mm copper conductor and for bimetallic switches 2core x 1.5 sqmm copper conductor shall be provided. Motor shall be supplied with 10m of round submersible copper cable of suitable size.The non clog submersible pumpset shall be provided with suitable starter control panel having all protections as mentioned above. (upto 5 HP - DOL Starter, above 5 HP to 25 HP -Star Delta Panel and beyond 25 HP shall be ATS) Unique Code Description Unit Rate for 2024- 25

Supply & Fixing of pvc pipes and specials complete direction as per the departmental officers

63mm pvc pipe

63mm pvc coupling

63mm pvc elbow

63mm pvc end cap

63mm pvc tee

90mm pvc pipe

90mm pvc coupling

90mm pvc elbow

90mm pvc end cap

90mm pvc tee

110mm pvc pipe

200mm HDPE tank

80mm Non-return valve