SECTION-E: TENDER AND CONTRACT FOR WORKS

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36 of 77 Item No.21 Providing & laying ( two level or slopes )and jointing with stiff mixture of cement mortar in proportion 1 : 1 salt glazed stoneware pipes 150 mm nominal internal diameters including testing of pipes and joints etc complete. Please refer Item description. Item No.22 Providing & laying cement concrete 1:5:10 ( 1 Cement : 5 Fine sand : 10 graded stone aggregate 40 mm nominal size ) bedding for stoneware pipes of 150 mm dia internal diameters with necessary formwork and curing etc complete.( 166 mm Avg. Bed thickness ) Please refer Item description. Item No.23 Providing salt glazed stoneware fitting bend of required degree ( Any redius of 150 mm internal diameters Please refer Item description. Item No.24 Providing & fixing 25 MM thick polished kotah Stone wall partitions 600 mm wide and required height and all sides polished machine cut and of approved quality including fixing the same in wall in line & level etc complete as directed by E.I.C. Materials : Water shall conform to Item-5. Cement mortar shall conform to Item-5. Kotah stone slab 25 mm. thick Polished kotah stone shall have the same specifications as per rough kotah stone except as mentioned below :The stones shall have machine polished smooth surface. When brought on site, the stones shall be single polished or double polished depending upon its use. The stones for paving shall generally be single polished. The stones to be used for dedo, skirting, platforms, sink, veneering, sills, etc. where machine polishing after the stones are fixed in site is not possible, shall be double polished. 2.0 Workmanship : 2.1 The relevant specifications of item No. 14.43(A) shall be followed except that the kotah stone shall be fixed for risers of steps dado or skirting in C. M. 1 : 3 and the polishing shall be done manually instead of machine polishing. 3.0 Mode of measurements & payment : The risers of steps, skirting or dado shall be measured in sq. meter length shall be measured along the finished faces of risers, skirting or dado, Height shall be measured from finished level of treads or floor to top. Lining of pillars shall be measured under this item. The rate shall be for a unit of one sq. meter. Item No.25 Providing & fixing galvanized mild steel tubes (medium grade)of 25 mm the following nominal bore tube fitting and clamps including making good the wall, ceiling and floor Materials : Galvanised mild steel tubes of specified dia. nominal bore shall conform to I.S. 1239-1968. The galvanized fittings, clamps, etc. required for specified dia. bore pipes shall be of best quality and make as approved by the Engineer-in-charge. 2.0. Workmanship : 2.1. Cutting, Laying and Jointing : 2.1.1. When the tubes are to be cut or rethreaded, the end shall be carefully filed out so that no obstruction to bore in offered. The ends of the tubes shall then be threaded conforming to the requirements of I.S. 554-1955 with pipe dies and taps carefully in such a manner as will not result in slackness of joints when the two pieces are screwed together. 2.1.21. The taps and dies shall be used only for straightening screw threads which have become bent or damaged and dies shall not be used for turning of the threads so as to make them slacks as the latter procedure may not result in a watertight joints. The screw threads for tube and fittings shall be protected from edge unit they are fitted. 2.1.3. In jointing the tubes, the inside of the socket and the screwed end of the tubes shall be oiled and smeared with white or red lead and wapping around with a few turns of fine spun yarn round the Signature of Contractor
37 of 77 screwed end of the tube. The end shall then be tightly screwed in the socket, tees etc. with a pipe wrench. Care shall be taken that all pipes and fittings are properly jointed so as to make the joints completely water tight and pipes are kept at all times free from dust, and dirt during fixing. Burr joints shall be removed after screwing. After laying, the open ends of the pipes shall be temporarily plugged to prevent access of water, soil or any other foreign matter. 2.1.4. Any threads exposed after jointing shall be painted or in the case of underground piping thickly coated with approved anti-corrosive paint to prevent corrosion. 2.2. Fixing of the tabe fitting to wall ceiling and floors: 2.2.1. In case of fixing of tubes and fittings to the walls or ceilings, these shall run on the surface of the wall or ceiling (not in chase) unless otherwise specified. The fixing shall be done by means of standard pattern, holder clamps keepings the pipes about 15 mm. clear of the wall. When it is found necessary to conceal the pipes and when specified so, chasing may be adopted or pipe fixed inducts or resesses etc. provided that there is sufficient space to work on the pipe with usual tools. The pipe shall not ordinarily be buried in walls or solid floors, where unavoidable, pipes may be buried for short distances provided the adequate protection is given against damage and where so required joints are not buried. Where required M.S. tube sleave shall be fixed at a place a pipe is passing through a wall or floor for expansion and contraction and other movements. In case the pipe is embedded in walls or floors, it should be painted with anti-corrosive bitumastic paint of approved quality. The pipe should not come in contact with lime mortar or lime concrete as the pipe is affected by lime. Under the floors, the pipe shall be laid in layer of sand filling. 2.2.2. All pipes and fittings shall be fixed truly vertical and horizontal unless unavoidable. The pipes shall be fixed to walls with standard pattern clamps of required size and shape, one end of which shall be properly plugged or cemented into walls with cement mortar 1:3 (1 cement : 3 coarse sand) and the other tightened round the pipes to hold it securely. These clamps shall be spaced at regular intervals in straight length at 2 M.C./C interval in horizontal run and 2.5 M interval in vertical run. For pipe of 15 mm. dia. up to 25 mm. dia. the holes in the walls and floors shall be made by drilling with chisel or jumper and not by dismantling the brick or concrete. However for bigger diameter pipes, the holes shall be carefully made of the smallest required size. After fixing the pipe the holes shall be made good with cement mortar 1:3 (1 cement : 3 coarse sand) and properly finished to match the adjacent surface. 2.3. Testing of joints : 2.3.1.After laying and jointing, pipes and fittings shall be inspected under working conditions of pressure and flow. Any joints found leaking shall be redone, and all leaking pipes removed and replaced without extra cost. 2.3.2. The pipes and fittings as they are laid shall be tested to hydraulic pressure of 6Kg./sq. cm. The pipe shall be slowly and carefully charged with water allowing all air to escape and avoiding all stock and water hammer. The draw off takes and stop cock shall then be closed and specified hydraulic pressure shall be applied gradually. The pressure gauge must be accurate. The pipes and fittings shall be tested section as the work of laying proceeds keeping the joints exposed for inspection During the testing. 3.0. Mode of measurements & payment : 3.1. The description of each item shall unless otherwise stated, be held to include where necessary, conveyance, and delivery, handling, unloading, storing fabrication, hoisting, all labour for finishing to required shape and size; testing , fitting in position, straight, cutting and waste , return of packing etc. 3.2.The length shall be measured on running metre basis of finished work, the length shall be taken along the centre hine of the pipe and fittings . The pipes fixed to walls ceiling, floors etc. shall be measured and paid under this item. 3.3. All the work shall be measured in decimal system as fixed in its place, subject to tolerance given below unless otherwise Signature of Contractor
Page 1 and 2: Signature of Contractor WANAKBORI T
Page 3 and 4: Signature of Contractor SECTION-A:
Page 5 and 6: GUJARAT STATE ELECTRICITY CORPORATI
Page 7 and 8: Signature of Contractor SECTION-B:
Page 9 and 10: Signature of Contractor 9 of 77 11)
Page 11 and 12: 11 of 77 case of delay due to circu
Page 13 and 14: Name of work: “Providing Toilet b
Page 15 and 16: 15 of 77 GUJARAT STATE ELECTRICITY
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Page 19 and 20: 80 mm 63 mm 40 mm 20 mm 16 mm Signa
Page 21 and 22: 21 of 77 The crushing strength of t
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Page 29 and 30: 29 of 77 suitable sizes shall be us
Page 31 and 32: Quantity of concrete No. of samples
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Page 35: 35 of 77 The tiles shall not have s
Page 39 and 40: 39 of 77 company with necessary exc
Page 41 and 42: Signature of Contractor Special con
Page 43 and 44: Signature of Contractor U]HZFT :8[8
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Page 47 and 48: Signature of Contractor GUJARAT STA
Page 49 and 50: Signature of Contractor (APPLICABLE
Page 51 and 52: Signature of Contractor TENDER AND
Page 53 and 54: 53 of 77 means Superintending Engin
Page 55 and 56: 55 of 77 unaffected in the event of
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Page 59 and 60: 59 of 77 CHARGE as to the extension
Page 61 and 62: compromising any claim by any such
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Page 65 and 66: 65 of 77 at the rate of one day for
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Page 69 and 70: Signature of Contractor SCHEDULE
Page 71 and 72: Signature of Contractor SECTION-F P
Page 73 and 74: GUJARAT STATE ELECTRICITY CORPORATI
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Page 77: 77 of 77 The rates will be "Excludi

SECTION-E: TENDER AND CONTRACT FOR WORKS

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