Construction of Decanting Station at Sewerage Treatment Plant at Annaimadu STP in Salem City Municipal Corporation

Amount

Earth work excavation for foundation in Hard stiff clay, stiff black cotton, hard red earth, shales murram, gravel,stoney earth and earth mixed with small size boulders SS.20B and Sand, silt or other loose soil, wet sand,or silt not under water, light black cotton soil, sandy loam ordinary soil and to full depth as may be directed except in hardrock requiring blasting inclusive of shoring shuttering and baling out water and cleaning and levelling the site etc.,complete

Earth work excavation for foundation in Medium Rock and Dense Medium Rock not requiring blasting depositing the surplus earth at places as directed by the departmental officers

Removing hard rock by wedging chiselling and trimming to proper shape where blasting is prohibited.

Plain Cement Concrete 1:4:8 (one part of cement, four part of Crushed Stone Sand (M- Sand) and eight part of coarse aggregates) using 40mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, laying and labour charges and all incidential charges such as water providing etc., complete as per standard specification

Supplying and filling in foundation and basement with Well Gravel in layers of not more than 15cm thick well rammed watered and compacted etc., complete complying with standard specification.

Centering for soffits of RCC slabs of plane surface like lintels, beams ,etc.,including strutting 3m high using mild steel sheets of size 90cm X 60cm X and B.G 10 stiffened with M.S angles of size 25mm X 25mm X 3mm laid over silver Oak (C.W) joists of size 10cm X 6.5cm (spaced at about 90cm c/c )and supported dy casurina props of 10cm to 13cm dia (spaced of 75cm C/C) complying with standard specification and directed

Reinforced cement concrete 1:1½:3 mix (One cement one and half CS sand three aggregate) using 20mm ISS gauge HBBG metal from the approved quarry including mixing, laying, consolidating, curing cost and conveyance of all materials to site and all labour charges etc., complete as per standard specification

Suppling and fabricating and placing in position MS (or) R.T.S. bar for reinforcement to all RCC works as per the design given including cost of steel and binding wire also in all floors.

Plastering with cement mortar 1:3 mix, 20mm thick including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc. complete . complying with std. specifications

Supply and delivery of submersible centrifugal sewage non-clog pumps,(Discharge Upto 20m3/hour with 12m Head), vertical spindle type pump , wear resistancewith submersible motor for the various duty conditions. Pump shall be capable of handling min 100 mm solid size withsewage specific gravity of up to 1.05. Pump shall be of robust construction, Liquid passages shall be finished smoothand 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 beprovided to protect the motor from ingress of sewage along the shaft. The critical speed of the rotor shall be at least30% above the operating speed. Pumps should have double bearings between the pump & motor. The bearings lifeshall be minimum 100,000 hrs of operation with greased for life. Pump should be provided with automatic couplingdevice including pedestal, duck foot bend, stainless steel guide pipe or related accessories of suitable size etc., Complete.

Supply and delivery of PVC includes and sheeted 3 core flat type 4.00sq.mm castle conformists

Supply and fixng of TNEB meter board suitable for 3 phase 200A service connection made up of suitable angle iron

Supply and fixing of following pipes and materials

GI Pipe 100mm

GI Coupling 100mm

GI Bend 100mm

Supplying and delivery of DI Pipes Class K7 along the alignment of conveying main as directed officers.

10mm dia DI Pipe

Supply and delivery of DI Double Flanged specials to the site of work (such as bends,Tees & tapers etc.,) conforming to IS 9523/2000 and as amended from time to time including loading, freight, unloading, stocking at site,etc. complete and as directed by Departmental Engineers etc complete.

Lowering of D.I Pipes and specials in the trenches and laying to proper grade and alignment.

100mm dia Pipe

Jointing D.I-S/S pipes and specials with rubber gaskets (tyton joint) including cost of lubricants.

100mm dia Pipe

Labour charges for the erection of submersible pumpset in borewell/openwell including fixing and jointing submersible cable with proper clamps upto the starter to required depth and also fixing of riser pipes to the required depth valves erection clamps, pressure gauges upto the exterior wall of pump room and erection of panel board consisting of TPICN switches starter, Voltmeter, Ammeter, three pilot (indicating) lamps capacitor single phasing preventor, water level guard and laying and jointing the cables and twin earthing as per IE rules etc., complete and testing the pumpset and trail run for 10 days.

Sri Vaideeswara & Co