KERALA WATER AUTHORITY STATE PLAN 2017-18 : WSS TO KOLLAMULA VILLAGE IN VECHOOCHIRA PANCHAYATH, PERUNAD PANCHAYATH (Part) AND NARANAMOOZHY PANCHAYATH (Part) PHASE I- REMAINING COMPONENTS NOTICE INVITING TENDER VOLUME II Tender No. :12/2017-18/KWA/ PHC/TVLA (RT-1) DUE DATE : 17.07.2018 OFFICE OF THE SUPERINTENDING ENGINEER Public HealthCircle, Pathanamthitta Kerala Water Authority Thiruvalla, Pathanamthitta Tel: 0469 – 2600162 e-mail – [email protected] 1 CONTENTS 1. GENERAL INFORMATION ABOUT THE PROJECT AREA 2. GENERAL INFORMATION ABOUT THE PROJECT 3. SPECIFIC SCOPE OF THE WORK 4. OTHER GENERAL CONDITIONS 2 1. GENERAL INFORMATION ABOUT THE PROJECT AREA Kollamula village encloses areas of Vechoochira, Perunad and Naranamoozhy Panchayaths. The boundaries of this village are Perunad Village on South, Chethakkal and Athikkayam villages on West, Erumely Villages of Kottayam district and Kumily Village of Idukki District on North and east. River Pampa bifurcates this village into two parts; a portion of Vechoochira Panchayath on right side of River and that of Naranamoozhy and Perunad Panchayath comes on left side of river. The people depend mainly on shallow wells and small streams for their drinking water needs. Due to the impermeable rocks, presence of water in shallow depth is rare. During summer season, potable drinking water becomes an expensive item. Kollamula Village is identified as a quantity affected village and main quality problem is the presence of high iron content. The existing water supply schemes – RWSS to Vechoochira, RWSS to Arayanjilymon, RWSS to Kurumbanmoozhy are found inadequate to meet the present and future demand of the whole area due to the deficiencies and handicaps in the schemes. This project intended to distribute 2.36 MLD water taken from the 10MLD capacity Treatment Plant of RWSS to Erumely near MES College of Engineering Erumely which was commissioned last year. The completed Components of the present scheme are 1) Clear Water Gravity Main From WTP to Venkurinji Sump ( 250 mm DI K9 - 2300 mtr) 2) 3 LL Capacity Sump and Pumphouse The work of Clear Water Pumping Main From Venkurinji Sump to proposed OlikkalSump and Pumphouse (250 mm DI K9 -1300 mtr) already arranged and will start soon. 2. SCOPE OF WORK AND GENERAL REQUIREMENT Following are the general scope of the work a) Construction of 6.00 LL GLSR and pump house at Olikkal b) Construction of 3.20 LL GLSR at Thalamuttiyani c) Supply and laying 150 mm DI k9 clear water pumping main from Olikkal pump 3 house to Thalamuttiyani GLSR d) Supply, erection and commissioning of clear water pumpset at Venkurinji sump for Olickal Sump cum pumphouse.(100 HP C/F pumps with total head 119m) d) Supply, erection and commissioning of clear water pumpset at Venkurinji sump for Pampirikkumpara GLSR (30 HP C/F pumpset with total head of 170m) e) Supply, erection and commissioning of clear water pumpset at Olikkal sump for Thalamuttiyani ( 20HP C/F pumpsets with total head of 68m) 3. SPECIFIC SCOPE OF THE WORK The above project includes the execution of the below described items of work as per the standard specifications and directions from the Departmental Officers. 3.1. DESIGN CONSTRUCTION AND COMMISSIONING OF 6.00 LL GLSR, PUMP HOUSE AND COMPOUND WALL AT OLIKKAL The work includes the preparation and submission of design and construction after getting approval of a 6.00 Lakhs Litre capacity GLSR and a pump house of inside area of 22.40 m2 with an inside toilet provision of size 1.5 x 1.2 m. The entire structure should be protected by a compound wall with lockable Gate of length 3.60m and height 1.50 m. The scope of work includes; 1 The structure should be constructed over mat layer Cement Concrete 1:3:6 of required thickness. 2 Sufficient dowel bars should be provided for the stability of the structure. 3 The columns should be provided with RCC trapezoidal column footing with strength not less than M30 and size 1.5 x 1.5 m .The columns for the GLSR should be constructed in RCC with size 0.3 x 0.3 m and the same of the Pump House with size 0.3 x 0.2 m. 2 The minimum height of the pump house is 3.60 m. Floor slab of sump shall have a minimum thickness of 30 cm and roof slab have minimum thickness of 12 cm. 3 The foundation of the Pump House and Compound walls should be constructed with Random Rubble masonry in cement mortar 1:5 4 The structural members should be constructed in RCC as water retaining with strength not less than M30. 5 The RCC members should be reinforced with branded Thermo Mechanically Treated Bars, free of corrosion and rust. The steel reinforcement should be provided as per the approved drawing and directions from the Departmental Officers. 6 The RCC members should be casted on a properly designed centering and shuttering framework after accounting the contraction and material properties of the formwork. 4 7 The pump house wall shall be constructed with solid concrete blocks masonry 20 cm tick in cement mortar 1:5 by using precast concrete solid blocks, exposed surface of all structures including compound wall has to be plastered with cement mortar 1:4 and concrete surface with CM 1:3.. etc. complete 8 The GLSR should be provided with 250 mm dia. Ductile Iron K9 Double Flanged Pipe (6 m) for Overflow arrangement, (6 m) for inlet arrangement 250 mm dia. Ductile Iron Wall casting pipe for inlet, overflow and distribution, 250 mm dia. PN 1.6 Sluice Valve (1 No.), 150 mm dia. PN 1.6 Sluice Valve (3 No.), 150 mm dia. Wall Casting Pipe ( 3Nos.) 9 The GLSR should be provided with GI ventilation at 14 points in the roof slab. 10 The GLSR should be provided with a KWA standard water level indicator. 11 The inside portions of the GLSR and all the RCC members should be plastered with Cement Mortar 1:3 with water proofing compound and all other plastering should be with Cement Mortar 1:4 12 The cement plastered surfaces should be finished with two coat of textured exterior paint of required shade over a coat of water thinnable cement primer of approved brand and manufacturer. The wood work, window grills, rolling shutter etc. should also be given a protective coating of two coats over a priming coat as per the direction of Engineer in Charge. 13 The GLSR should be provided with MS ladder both inside and outside, both of which fixed firmly to avoid accidents in the future. 14 The GLSR should be provided with 2 manholes over which suitable manhole cover of Cast Iron should be ensured. 15 Toilet door with UPVC door of size 0.75mx 2.1m and one glazed ventilator using 4 mm glass panes (with 12 mm MS rod @ 12 cm c/c for grill) of size 0.7x0.50m painting with enamel paint of approved quality over a priming coat as directed by dept. officers. 16 Toilet Floors are finished with vitrified/ceramic floor tiles of size not less than 300x300mm and 1st quality conforming to IS:1562 of approved make laid on 20 mm thick cement mortar 1:4 (1 Cement : 4 Coarse sand), including pointing the joints with white cement and matching pigment etc., complete. 17 Toilet walls up to 2.1 m are finished with 1st quality ceramic glazed wall tiles conforming to IS : 15622 (thickness to be specified by the manufacturer), of approved make, of any size as approved by Engineer-in-Charge, in skirting, risers of steps and dados, over12 mm thick bed of cement mortar 1:3 (1 cement : 3 coarse sand) and jointing with grey cement slurry@ 3.3 kg per sqm, including pointing in white cement mixed with pigment of matching shade complete. 5 18 Providing and fixing white vitreous China pedestal type W/C with seat and 10 litre low level flushing cistern including all fittings. Supply and installing readymade PVC septic tank of capacity 20 users per day including necessary connection from W/C pan with ventilation arrangements. Providing 300 litre capacity PVC tank, fixing 25 mm C P tap, 25mm GM gate valve, 1No Wash Basin and giving water connection from the near distribution line using 25 mm PVC pipe etc for water supply facility to the toilet 19 Providing gantry crane arrangements with 5T capacity with three dimensional movement shall be provided for lifting/erection of pump sets, with required number of RCC /Steel columns and Girder beams. 20 This work includes the supply and fitting of 1 no. rolling shutter of size 1.8 x 2.4m, 4 Nos. UPVC glazed windows with 12mm MS rods spaced @10 cm c/c for safety bars shall be provided. 21 Cement plastered surface shall be painted with 2 coat, textured exterior paint of best quality over one coat priming coat etc. complete. The window grills, rolling shutter etc. should also be given a protective coating two coats over a priming coat as per the direction of engineer in charge. 22 This work includes Pump house wiring, including supplying & fixing of minimum 8 Nos of LED tube light, 2 Nos. of fan, 2 plug points etc. as per the direction of departmental officers. These electrical items and installations shall be of approved brand and manufacturer. 23 The contractor shall carry out all the interconnection works with already laid gravity main/ pumping main as per the directions of departmental officers. 24 Maintaining components supplied installed and constructed as well as a part of this contract during the maintenance period from the date of commissioning of the scheme in a satisfactory Manner acceptable to the Executive Engineer in accordance with Clause 8.24 Vol.I.