Tender Document - irpmu.railnet.gov.in

More documents

Recommendations

Info

18.6 Wherever chamfer or rounded corners are mentioned in the drawing formwork, should be such that no chiselling/ cutting is required. The surface of formwork should be clear, smooth and free of cement mortar. 18.7 The Contractor shall give the Engineer In-charge sufficient notice in advance before placing any concrete in the forms to permit him to inspect and accept the false work and forms as to their strength, alignment and general fitness but such inspection shall not relieve the contractor of his responsibility for safety of works, men, machinery, materials and for result obtained. 19.0 REMOVAL OF FORM WORK: 19.1 The Engineer-In-Charge shall be informed in advance by the contractor of his intention While fixing the time for removal of form work, due consideration shall be given to the local conditions, character of the structure, the weather and the other conditions that influence the setting of concrete and of the material used in the mixes to strike any formwork. 19.2 The period shall be suitably increased in case of temperature lower than 25 degree Celsius and for any other conditions tending to delay the setting of concrete. 19.3 These field operation are controlled by strength tests of concrete. The removal of the load supporting arrangements of soffit may commence when concrete has attained 70% characteristic strength, at the time of striking props including the effect of any further additions of loads. When field operations are not controlled by strength, test of the concrete, the vertical forms of beams, columns & walls may be removed as per orders of the Engineer- In-charge. 19.4 For pre-stressed units the side forms shall be released as early as possible after 12 hours of casting and so fit forms shall be permitted without restraint deformation of the member when pre-stressed is applied. 19.5 All formwork shall be removed without causing any damage to be concrete. Centring shall be gradually and uniformly lowered in such a manner as to avoid any shock or vibrations. Supports shall be removed in such a manner as to permit concrete to take stress due to its own weight uniformly and gradually. Where internal metal ties are permitted, their removable parts shall be extracted without causing any damage to the concrete and the remaining holes filled with mortar. No permanently embedded metal parts shall have less than 40mm cover to the finished concrete surfaces, where it is intended to re-use released form work, it shall be cleaned and make good to the satisfaction of Engineer-incharge. 20.0 MEASUREMENT: 20.1 All work will be paid for at the tendered rates on the basis of actual measurements taken at site. Individual rate for each non-schedule item should be fore complete finished work, inclusive of all operational charges. Nothing extra will be payable on any account. OS/Works 54
21.0 PLAIN/REINFORCED CEMENT CONCRETE WORKS: 21.1 The ISI and IRS code of practices for the structural use of reinforced concrete in bridges and building shall form part of the specifications for the above work. 21.2 The IS”456-2000 code of practice for the structural use of reinforced concrete in building shall form part of all RCC items as additional specifications and this code and standard practice in reinforced concrete construction involved by the adoption of this code shall be followed. 22.0 SPECIFICATIONS FOR CONCRETE WORKS: 22.1 (a) These specifications shall be read in conjunction with any other specifications for concreting work given elsewhere in tender document. (b) Clear Cover will be provided as per drawings & specifications or as directed by the Engineer –in-charge. 23.0 AGGREGATES FOR CONCRETING: 23.1 COARSE AGRGREGATES: Coarse aggregates shall be crushed gravel/ crushed quarry rock and shall conform to requirements of IS: 383/IS: 456 & IS: 1343. All coarse aggregate material shall be chemically inert, strong, hard, of limited porosity and free from adhering coatings, clay and corrosion of the reinforcement so as not to affect the strength and durability of the concrete. 23.2 FINE AGGREGATE: Fine aggregate shall be washed coarse sand of approved quality and grading conforming to IS: 383, IS: 456 & IS: 1343 standards. It shall be free from impurities and deleterious substances. The decision of Engineer-in-charge shall be final regarding approval of the coarse and fine aggregate for the construction work. The contractor shall be required to carry out washing and re-stacking of aggregates as directed by Engineer In-charge and the cost of the same deemed to be included in the quoted rates. 23.3 STORAGE OF AGGREGATES: Aggregates shall be delivered at site and stored in separate sizes as ordered by the Engineer-in-charge. The Engineer-incharge shall decide and direct the contractor to bring, stack and store aggregates in different sizes as he deems necessary for the proper quality control. Aggregates shall be stored or stock piled in such a manner that various sizes will not become intermixed before proportioning. These shall be stored, stock piled and handled in such a manner that will prevent contamination by foreign deleterious material. In the case of fine aggregates they shall be OS/Works 55
Page 1 and 2:
CONTENTS “Construction of 16 nos.
Page 3 and 4: Tender Notice INDIAN RAILWAY PROJEC
Page 5 and 6: c) I/We realize from my/our offer o
Page 7 and 8: Officer/IRPMU, Shivaji Bridge, New
Page 9 and 10: III. Cases where measurements have
Page 11 and 12: 2 lakhs plus ½ % (half percent) of
Page 13 and 14: laws, ordinance, rules and regulati
Page 15 and 16: 5.2 (a) The successful bidder may g
Page 17 and 18: 7.0 STUDY OF DRAWINGS AND LOCAL CON
Page 19 and 20: 9.3.1 The contractor shall work in
Page 21 and 22: the non-schedule items quoted by th
Page 23 and 24: him/them for plying his/their vehic
Page 25 and 26: may be for highly skilled, semi ski
Page 27 and 28: Land for setting up a workshop by t
Page 29 and 30: A minimum value addition of 20% by
Page 31 and 32: Annexure-B SUPPLEMENTARY AGREEMENT
Page 33 and 34: Annexure-D CONSTITUTION OF THE FIRM
Page 35 and 36: Annexure -F LIST OF ENGINEERS/PERSO
Page 37 and 38: Annexure - H Statement of works bei
Page 39 and 40: FORM NO.E-5 FORMS Electronic Cleari
Page 41 and 42: enforceable till all the dues of th
Page 43 and 44: with up to date correction slips, N
Page 45 and 46: 383-1970 and IS-515 & 516-1959. I.S
Page 47 and 48: iii) For the purpose of levy of ces
Page 49 and 50: 6.8 Railway may also take samples d
Page 51 and 52: incurred by the contractor in conne
Page 53: e so constructed that there are ade
Page 57 and 58: 25.1.2 Batch mixers will be tested
Page 59 and 60: place before the labour proceeds fo
Page 61 and 62: 31.8 The contractor/s shall keep/ma
Page 63 and 64: W - Index Number of wholesale price
Page 65 and 66: trailer tools and plants their spar
Page 67 and 68: 3) Steel Register: - Verify & ensur
Page 69 and 70: Verify the register recording the d
Page 71 and 72: Railways or nay other departments o
Page 73 and 74: NORTH CENTRAL RAILWAY SCHEDULE OF I
Page 75 and 76: suspended floors , roofs etc 14 042
Page 77 and 78: sand: 4 graded stone etc 44 108178
Page 79 and 80: Indian Railway Project Management U
Page 81 and 82: Hkkjrh; jsy ifj;kstuk izcU/ku bdkbZ
Page 83: 1 Lkfpo Ikh-lh-bZ-@,u-vkj-] lh-,-vk
show all

Tender Document - irpmu.railnet.gov.in

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?