GF 2024_25 Providing Decanting arrangements in Sewage Treatment Plant at Thiruporur Town Panchayat

Amount

Earth work open excavation and depositing on bank with in the initial lead of 10m and a lift of 2m in hard stiff clay, stiff block cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders etc., as per SS 20 A. TNDSS NO: 23 & 24 VI (S2) VI,VII 9,10 with standard specifications.

Supply and filling of Stone Dust in layer of not more than 15cm thick including watering with all layers and consolidation complying with standard specification including cost and conveyance of sand at Site and all labour charges and all other incidential charges etc., complete as per standard specification

Plain Cement Concrete 1:4:8 using 40mm gauge hard broken including cost and conveyance of all materials to site including labour charges, transporting and placing in position including shoring, strutting forming protective bunds, cofferdams bailing out of water labour for mixing compacting, finishing and curing, working at depths, tools and plants and incidental charges such as sheeting, shoring and bracing and their subsequent removal etc., complete as per standard specification.

Providing and laying in position Standardised Concrete Mix M-20 Grade in accordance with IS 456 - 2000 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement contenet of 325Kg/ cum and maximum water cement ratio of 0.55 including admixture (Plasticiser / super plasticiser) in recommended proportions as per IS 9103 to accelerate, related setting of concrete, improve workability without imparing strength and durability with about (5.0cum), 7730Kg of 20mm machine crushed stone jelly and with about (3.3 cum), 5156kg of 10 - 12mm machine crushed stone jelly and with about (4.79cum) 7670 kg of Crushed Stone Sand (M- Sand), but excluding cost of reinforcement grill and fabricating charges centering and shuttering but including laying, vibrating with mechanical vibrators, finishing, curing, etc and providing fixtures like fan clamps in the RCC floor / roof slabs wherever necessary without claiming extra cost etc., complete complying with standard specification and as directed by the departmental officers -

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 1:5 (One part of Cement and Five part of Plastering Sand (P- Sand)) 12mm, thick in all floors including cost and conveyance of all materilas to site and labour charges etc,complete as per standard specifications

Supplying and erecting centering to sides and soffits including supports and strutting with necessary cross bracing for plain surface such as RCC slabs rectangular beams all beams lintels etc., centering for soffits upto 3 meter height using mild steel sheet of size 90 cm x 60 cm x 10 mm gauge with MS angles of size 25mm x 25mm x 3mm laid over silver oak (CW) joists of size 10cm x 6cm spaced upto 90cm c/c and casurina props or 10 cm to 13 cm dia spaced at 0.750 cm c/c complying with standard specifications as per TNDSS NO : 30 & 86. With out strutting

With strutting

Supply & delivery of 200mm Dia PVC 6ksc Pipe SOR II PG.NO 5

Supply & delivery of 90mm Dia PVC 6KSC Pipe WD-M0012 SOR II PG.NO 5

Supply & Delivery GI SPECIALS of Following Materails 80mm Dia GI Pipe WD-M0491 SOR II PG.NO 27

80mm Dia GI Bend SOR II PG.NO 32

80mm Dia Flange Set SOR II PG.NO 32

90mm Dia PVC 6ksc Bend SOR II PG.NO 10

Earth work open excavation and depositing on bank with in the initial lead of 10m and a lift of 2m in hard stiff clay, stiff block cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders etc., as per SS 20 A. TNDSS NO: 23 & 24 VI (S2) VI,VII 9,10 with standard specifications.

Lowering PVC/ DWSC rigid pipes and specials to trench and laying to proper grade and alignment, jointing with PVC couplers with cement paste. SOR II PG.NO 171 11b (i)

Refilling the excuvated Earth for pipe Laying woks including cost of Labour Charges watering Consaltation etc Complete As per Standard Specifications SOR II PG.NO 191

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.(Sor II page 136 WD-M2090)

Supply and delivery of PVC includes and sheeted 3 core flat type 4.00sq.mm castle conformists (sor II page 124 WD-M1975)

Supply and fixng of TNEB meter board suitable for 3 phase 200A service connection made up of suitable angle iron (Electrical Sor Page 60 SD 134)