Ministry of Road Transport and Highways

SPECIFICATIONS FOR ROAD AND BRIDGE WORKS (Up-gradation of Third Revision) UPGRADED SECTION 500 AND ITS RELATED ASPECTS IN SECTIONS 900 AND 3000 (Addendum to Third Revision) Published by the Indian Roads Congress on behalf of the Govt. of India, Ministry of Road Transport and Highways Copies can be had from the Secretary, Indian Roads Congress, Jamnagar House, Shahjahan Road, New Delhi-110 011. NEW DELHI 2000 Price Rs. 200/- Plus packing & postage charges

published : November, 2000

(Rights of Publication and of Translation are reserved)

Printed at Dee Kay Printers, New Delhi-110015 2000 Copies

PREFACE TO THE THIRD REVISION

Specifications for Road and Bridge Works'' first published in 1973 has, already undergone two revisions in the past. With the advent of the externally aided projects based on international contract documents and modernisation of Highway Construction, it became necessary to revise the Specifications to be consistent with equipment based construction tech- niques. Many of these revised specifications were included in the bidding documents of individual projects. The specifications have now been completely revised incorporating all the changes required to take into account the latest construction practices and the suggestions received from various users, A few additional chapters on topics not covered earlier have also been added.

Revision of these specifications could be carried out in a short time only due to the concerted efforts of officers of the Roads Wing and the consultants who were intimately connected with this work, 1 wish to record my appreciation of the efforts put in by all concerned.

As with all specifications, the Third Revision of the Specifications will also no doubt need further updating in course of time. Feed back and suggestions for improvement would be welcome from all users of the document. New Delhi M. V, SASTRY November, 1994. Director General ( Road Development)

CONTENTS

SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO.100 GENERAL 101 INTRODUCTION 3 102 DEFINITIONS 3 103 MATERIALS AND T EST STANDARDS 6 104 SIEVE; DESIGNATIONS 6 105 SCOPE OF WORK 7 106 CONSTRUCTION EQUIPMENT 8 107 CONTRACT DRAWINGS 9 108 SIT E INFORMATION 9 109 SETTING OUT 10 110 PUBLIC UTILITIES 11 111 PRECAUTIONS FOR SAFEGUARDING 13 T HE ENVIRONMENT 112 ARRANGEMENT FOR TRAFFIC 14 DURING CONSTRUCTION 113 GENERAL RULES FOR THE 17 MEASUREMENT OF WORKS FOR PAYMENT 114 SCOPE OF RATES FOR 19 DIFFERENT ITEMS OF WORK 115 METHODOLOGY AND SEQUENCE OF 21 WORK 116 CRUSHED ST ONE AGGREGATES 21 117 APPROVAL OF MATERIALS 21 118 SUPPLY OF QUARRY SAMPLES 21 119 USE OF SURFACES BY 22 CONSTRUCTION TRAFFIC 120 SITE OFFICE FOR ENGINEER AND 22 OTHER SUPERVISORY STAFF 121 FIELD LABORATORY 26 122 SITE RESIDENTIAL 30 ACCOMMODATION FOR ENGINEER AND OTHER SUPERVISORY STAFF 123 PROVIDING AND MAINTAINING 32 WIRELESS COMMUNICATION SYSTEM 124 PROVIDING AND MAINTAINING 33 VEHICLES FOR THE ENGINEER 125 SUPPLY OF COLOUR RECORD 35 PHOTOGRAPHS AND ALBUMS 126 SUPPLY OF VIDEO CASSETTES 36

ii Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO.200 SIT E 201 CLEARING AND GRUBBING 41

CLEARANCE 202 DISMANTLING CULVERTS, 44 BRIDGES AND OTHER STRUCTURES/PAVEMENTS

3 00 EARTH WORK, 301 EXCAVATION FOR ROADWAY AN 49EROSION DRAINS

CONTROL AND 302 BLASTING OPERATIONS 57DRAINAGE 303 PRESPL1TTING ROCK EXCAVATION 61

SLOPES 304 EXCAVATION FOR STRUCT URES 63 305 EMBANKMENT CONSTRUCTION 67 306 SOIL EROSION AND 83 SEDIMENTATION CONTROL 307 TURFING WITH SODS 85 308 SEEDING AND MULCHING 87 309 SURFACE/SUB-SURFACE DRAINS 90 310 PREPARATION AND SURFACE 94 TREATMENT OF FORMATION 311 WORKS T O BE KEPT FREE OF WATER 95 312 WATER COURSES AT CULVERTS 95 313 CONSTRUCTION OF ROCK FILL 96 EMBANKMENT

400 SUB-BASE S, 401 GRANULAR SUB-BASE 101BASES (NON- 402 LIME TREATED SOIL FOR IMPROVE 105

BIT UMINOUS) SUB-GRADE/SUB-BASE AND 403 CEMENT TREATED SOIL SUB- 109

SHOULDERS BASE/BASE 404 WATER BOUND MACADAM 112 SUB-BASE/BASE 405 CRUSHED CEMENT CONCRETE 121 SUB-BASE/BASE 406 WET MIX MACADAM SUB-BASE/ 123 BASE 407 SHOULDERS, ISLANDS AND MEDIAN 128 408 CEMENT CONCRETE KERB AND 130 KERB WITH CHANNEL 409 FOOT PATHS AND SEPARATORS 132 410 CRUSHER-RUN MACADAM BASE 133

500 BASES AND 501 PREPARATION OF SURFACE 139SURFACE 502 PRIME COAT OVER GRANULAR BASE 145COURSES 503 TACK COAT 148

(BI T UMINOUS)

504 BITUMINOUS MACADAM 149

505 BITUMINOUS PENETRATION 157 MACADAM 506 BUILT -UP SPRAY GROUT 160

iii Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO. 507 DENSE BITUMINOUS MACADAM 163 508 SURFACE DRESSING 170 509 OPEN GRADED PREMIX CARPET 177 510 MIX SEAL SURFACING 185 511 SEMI-DENSE BITUMINOUS 186 CONCRETE 512 BITUMINOUS CONCRETE 189 513 SEAL COAT 192 514 SUPPLY OF MINERAL AGGREGATES 194 FOR PAVEMENT COURSES 515 BITUMEN MAST IC 197 516 SLURRY SEAL 202 517 RECYCLING OF BITUMINOUS 204 PAVEMENT 600 CONCRETE 601 DRY LEAN CEMENT CONCRETE 211 PAVEMENT SUB-BASE 602 CEMENT CONCRETE PAVEMENT 220 603 ROLLED CEMENT CONCRETE BASE 247 700 GEOSYNTHETICS 701 GEOSYNTHETICS IN ROAD AND 255 AND BRIDGE WORKS REINFORCED 702 GEOTEXTILES IN SUB-SURFACE 257 EARTH DRAINS 703 REINFORCED EARTH 259 704 GEOSYNTHETICS FOR HIGHWAY 263 PAVEMENTS 705 PROTECTION WORKS WITH 266 GEOSYNTHETICS 800 TRAFFIC SIGNS, 801 TRAFFIC SIGNS 273 MARKINGS & 802 OVERHEAD SIGNS 27S OTHER ROAD 803 ROAD MARKINGS 282 APPURTENANCES 804 HECTOMETRE/KILOMETRE STONES 288 805 ROAD DELINEATORS 289 806 BOUNDARY STONES 289 807 FENCING 289 808 TUBULAR STEEL RAILING 290 809 CONCRETE CRASH BARRIER 291 810 METAL BEAM CRASH BARRIER 292 811 ROAD TRAFFIC SIGNALS 295 900 QUALITY 901 GENERAL 299 CONTROL 902 CONTROL OF ALIGNMENT LEVEL 301 FOR ROAD AND SURFACE REGULARITY WORKS 903 QUALITY CONTROL TESTS DURING 305 CONST RUCTION

iv Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO.1000 MATERIALS 1001. GENERAL 323 FOR 1002. SOURCES OF MATERIAL 323 STRUCTURES 1003. BRICKS 323 1004. STONES 323 1005 CAST IRON 324 1006. CEMENT 324 1007. COARSE AGGREGATES 323 1008. SAND/FINE AGGREGATES 326 1009. STEEL 326 1010. WATER 329 1011. TIMBER 330 1012. CONCRETE ADMIXTURES 330 1013. REINFORCED CONCRETE PIPES 331 1014. STORAGE OF MATERIALS 331 1015. TESTS AND STANDARD OF 334 ACCEPTANCE 1100 PILE 1101. DESCRIPTION 339 FOUNDATIONS 1102. SUB-SURFACE INVESTIGATION 339 1103. TYPE OF PILES 340 1104. MATERIALS 340 1105. TEST PILES 341 1106. PRECAST CONCRETE PILES 341 1107. CAST-IN-SITU CONCRETE PILES 344 1108. STEEL PILES 347 1109. TIMBER PILES 348 1110. DRIVING EQUIPMENT 348 1111. DRIVING 349 1112. RAKER (INCLINED) PILES 352 1113. PILE TESTS 353 1114. PILE CAP 353 1115. IMPORTANT CONSIDERATIONS, 354 INSPECTION/PRECAUTIONS FOR DIFFERENT TYPES OF PILES 1116. TOLERANCES 356 1117. TESTS AND STANDARDS OF 357 ACCEPTANCE 1118. MEASUREMENTS FOR PAYMENT 357 1119. RATE 358 1200. W ELL 1201. DESCRIPTION 361 FOUNDATIONS 1202. GENERAL 361 1203. SETTING OUT AND PREPARATIONS 362 FOR SINKING 1204. CUTTING EDGE 364 1205. WELL CURB 364 1206. WELL STEINING 365 1207. WELL SINKING 366

v Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO. 1208. BOTTOM PLUG 375 1209. SAND FILLING 376 1210. TOP PLUG 376 1211. WELL CAP 376 1211. TOLERANCES 377 1213. TESTS AND STANDARDS 377 OF ACCEPTANCE 1214. MEASUREMENT FOR PAYMENT 377 1215. RAT E 377 1300 BRICK 1301. DESCRIPT ION 381 MASONRY 1302. MATERIALS 381 1303. PERSONNEL 3S1 1304. CEMENT MORTAR 381 1305. SOAKING OF BRICKS 382 1306. JOINT S 382 1307. LAYING 382 1308. JOINTING OLD AND NEW WORK 383 1309. CURING 3S3 1310. SCAFFOLDING 384 1311. EQUIPMENT 384 1312. FINISHING OF SURFACES 384 1313. ARCHITECTURAL COPING FOR 386 WING/RET URN/PARAPET WALL 1314. ACCEPTANCE OF WORK 386 1315. MEASUREMENTS FOR PAYMENT 386 1316. RATE 387

140 0 STONE 1401. DESCRIPTION 391 MASONRY 1402. MATERIALS 391 1403. PERSONNEL 391 1404. TYPE OF MASONRY 391 1405. CONSTRUCTION OPERATIONS 391 1406. ARCHITECTURAL COPING FOR 397 WING/RETURN/PARAPET WALLS 1407. TESTS AND STANDARD 397 OF ACCEPTANCE MEASUREMENTS FOR PAYMENT 397 RATE 398

15 00 FORMWORK 1501. DESCRIPT ION 401 1502. MATERIALS 401 1503. DESIGN OF FORMWORK 401 1504. WORKMANSHIP 402 1505. FORMED SURFACE AND FINISH 403 1506. PRECAUTIONS 404 1507. PREPARATION OF FORMWORK 404 BEFORE CONCRETING

vi Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO. 1503. REMOVAL OF FORMWORK 405 1509. RE-USE OF FORMWORK 406 1510. SPECIALISED FORMWORK 406 1511. TESTS AND STANDARDS 407 OF ACCEPTANCE 1512. MEASUREMENTS FOR PAYMENT 407 1513. RATE 407 1600 STEEL REINFOR- 1601. DESCRIPTION 411 CEMENT 1602. GENERAL 411 (UNTENSIONED) 1603. PROTECTION OF REINFORCEMENT 411 1604. BENDING OF REINFORCEMENT 411 . 1605. PLACING OF REINFORCEMENT 412 1606. BAR SPLICES 413 1607. TESTING AND ACCEPTANCE 415 1608. MEASUREMENTS FOR PAYMENT 415 1609. RATE 415 1700 STRUCTURAL 1701. DESCRIPTION 419 CONCRETE 1702. MATERIALS 419 1703. GRADES OF CONCRETE 419 1704. PROPORTIONING OF CONCRETE 421 1705. ADMIXTURES 424 1706. SIZE OF COARSE AGGREGATE 424 1707. EQUIPMENT 425 1708. MIXING CONCRETE 426 1709. TRANSPORTING, PLACING AND 427 COMPACTION OF CONCRETE 1710. CONSTRUCTION JOINTS 428 1711. CONCRETING UNDER WATER 428 1712. ADVERSE WEATHER CONDITIONS 430 1713. PROTECTION AND CURING 431 1714. FINISHING 432 1715. TOLERANCES 433 1716. TESTS AND STANDARDS OF 433 ACCEPTANCE 1717. MEASUREMENTS FOR PAYMENT 435 1718. RATE 435 1800 PRESTRESSING 1801. DESCRIPTION 439 1802. MATERIALS 439 1803. TESTING OF PRESTRESSING 441 STEEL AND ANCHORAGES 1804. WORKMANSHIP 441 1805. SUPERVISION 445 1806. TENSION1NG EQUIPMENT 445 1807. POST-TENSIONING 446

vii Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO. 1808. GROUTING OF PRESTRESSED 447 TENDONS 1809. PRE-TENSIONING 447 1810. SAFETY PRECAUTIONS 450 DURING TENSIONING 1811. TRANSPORTATION AND 451 STORAGE OF UNITS 1812. TOLERANCES 451 1813. TEST SAND STANDARDS 451 OF ACCEPTANCE 1814. MEASUREMENT S FOR PAYMENT 451 1815. RATE 452 1900 STRUCTURAL 1901. DESCRIPTION 455 STEEL 1902 GENERAL 455 1903. MATERIALS 455 1904. FABRICATION 458 1905. ERECTION 471 1906. PAINTING 481 1907. TESTS AND STANDARDS 488 OF ACCEPTANCE 1908. MEASUREMENTS FOR PAYMENT 4S8 1909. RATE 489 2000 BEARINGS 2001. DESCRIPTION 493 2002. GENERAL 493 2003. STEEL BEARINGS 493 2004. SPECIAL BEARINGS 498 2005. ELASTOMERIC BEARINGS 500 2006. POT BEARINGS 513 2007. INSPECT ION AND TESTING 519 2008. TESTS AND STANDARDS OF 519 ACCEPTANCE 2009. MEASUREMENTS FOR PAYMENT 519 2010. RATE 519 2100 OPEN 2101. DESCRIPTION 523 FOUNDATIONS 2102. MATERIALS 523 2103. GENERAL 523 2104. WORKMANSHIP 523 2105. TESTS AND STANDARDS OF 525 ACCEPTANCE 2106. TOLERANCES 526 2107. MEASUREMENTS FOR PAYMENT 526 2108. RATE 5262200 SUB-STRUCTURE 2201. DESCRIPT ION 529 2202. MATERIALS 529

viii Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO. 2203. GENERAL 529 2204. PIERS AND ABUTMENT S 529 2205. PIER CAP AND ABUTMENT CAP 530 2206. DIRT/BALLAST WALL, 531 RETURN WALL & WING WALL 2207. TESTS AND STANDARDS OF 531 ACCEPTANCE 2208. TOLERANCES IN CONCRETE 531 ELEMENTS 2209. MEASUREMENTS FOR PAYMENT 532 2210. RATE 532 2300 CONCRETE 2301. DESCRIPTION 535 SUPER- 2302. MATERIALS 535 STRUCTURE 2303. GENERAL 535 2304. REINFORCED CONCRETE 535 CONSTRUCTION 2305. PRESTRESSED CONCRETE 536 CONSTRUCTION 2306. TOLERANCES 53S 2307. TESTS AND STANDARDS OF 538 ACCEPTANCE 2308. MEASUREMENTS FOR PAYMENT 539 2309. RATE 539 2400 SURFACE AND 2401. GENERAL 543 SUB-SURFACE 2402. PRELIMINARY INVESTIGATION 544 GEOTECHNICAL 2403. DETAILED EXPLORATION 546 EXPLORATION 2404. EXPLORATION FOR BRIDGE 547 FOUNDATIONS RESTING ON ROCK 2405. BORING 550 2406. RECORDS OF BORINGS 550 AND TRIAL PITS 2407. METHODS OF SAMPLING 551 2408. PROCEDURE FOR 552 TAKING SAMPLES 2409. PROTECTION, HA NDLING 554 AND LABELLING OF SAMPLES 2410. TESTS FOR EXPLORATION 555 OF SHALLOW FOUNDATIONS OF BRIDGES 2411. TESTS FOR EXPLORATION 555 FOR DEEP FOUNDATIONS OF BRIDGES

ix Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO. 2412. TESTING OF MATERIAL FOR 556 GUIDE BUND AND HIGH EMBANKMENT AND ITS FOUNDATIONS. 2413. MEASUREMENTS FOR PAYMENT 559 2414. RATE 559 2500 RIVER TRAINING 2501. DESCRIPTION 563 WORK AND 2502. GUIDE BUND 563 PROTECTION 2303. APRON 564 WORK 2504 PITCHING/REVETMENT 566 ON SLOPES 2505 RUBBLE STONE/CEMENT 569 CONCRETE BLOCK FLOORING OVER CEMENT CONCRETE BEDDING 2506. DRY RUBBLE FLOORING 570 2507. CURTAIN WALL AND 570 FLEXIBLE APRON 2508. TESTS AND STANDARDS OF 571 ACCEPTANCE 2509. MEASUREMENTS FOR PAYMENT 571 2510. RATE 571 2600 EXPANSION 2601. DESCRIPT ION 575 JOINTS 2602 GENERAL 575 2603. REQUIREMENTS 576 2604. STEEL PLATE SLIDING 577 EXPANSION JOINTS 2605. FILLER JOINTS 578 2606. ELASTOMERICS LAB 578 SEAL EXPANSION JOINT 2607. STRIP SEAL EXPANSION, JOINT 583 2608. TESTS AND STANDARDS OF 587 ACCEPTANCE 2609. MEASUREMENTS FOR PAYMENT 587 2610. RATE 587 2700 WEARING 2701. DESCRIPT ION 591 COAT AN D 2702 WEARING COAT 591 APPURTENANCES 2703. RAILINGS 592 2704. APPROACH SLAB 593 2705. DRAINAGE SPOUT S 594 2706. WEEP HOLE 595 2707. TESTS AND STANDARDS OF 595 ACCEPTANCE 2708. MEASUREMENTS FOR PAYMENT 595 2709. RATE

x Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO.2800 REPAIR OF 2801. DESCRIPTION 599 STRUCTURES 2801. GENERAL 599 2803. SEALING OF CRACKS 599 BY INJECTION OF EPOXY RESIN 2804. EPOXY MORTAR FOR 606 REPLACEMENT OF SPALLED CONCRETE 2805. EPOXY BONDING OF NEW 609 CONCRETE T O OLD CONCRETE 2806. CEMENT GROUTING 609 2807. GUNITING/SHOTCRETE 612 2808. REPLACEMENT/RECTIFICATION 614 OF BEARINGS 2809. DISMANTLING OF CONCRETE 615 WEARING COAT 2810. EXTERNAL PRESTRESSING 616 2811. TESTS AND STANDARDS OF 617 ACCEPTANCE 2812. MEASUREMENTS FOR PAYMENT 617 2813. RATE 618 2900 PIPE 2901. SCOPE 621 CULVERTS 2902. MATERIALS 621 2903. EXCA VATION FOR PIPE 621 2904. BEDDING FOR PIPE 622 2905. LAYING OF PIPE 622 2906. JOINTING 623 2907. BACKFILLING 623 2908. HEADWALLS AND OT HER 624 ANCILLARY WORKS 2909. OPENING TO TRAFFIC 624 2910. MEASUREMENTS FOR PAYMENT 624 2911. RATE 624 3000 MAINTENANCE 3001. GENERAL 627 OF ROAD 3002. RESTORATION OF RAIN-CUTS 627 3003. MAINTENANCE OF EARTHEN 628 SHOULDERS 3004. BITUMINOUS WORK IN 629 CONNECTION WITH MAINTENANCE AND REPAIRS 3005. MAINTENAINING OF CEMENT 631 CONCRETE ROAD

xI Contents SECTION SECTION CLAUSE CLAUSE TITLE PAGENO. TITLE NO. NO.APPENDICES APPENDIX 1. LIST OF I.R.C, PUBLICATIONS 637 REFERRED TO IN THE SPECIFICATIONS CODES & STANDARDS APPENDIX 2. LIST OF INDIAN AND FOREIGN 640 STANDARDS REFERRED TO IN THE SPECIFICATIONS APPENDIX 3 METHOD OF SIEVING FOR 647 WET SOILS TO DETERMINE THE DEGREE OF PULVERISATION APPENDIX 4. GUIDELINES ON SELECT ION 648 OF THE GRADE OF BITUMEN APPENDIX 5. ANT I-STRIPPPING AGENTS USED FOR 650 BITUMINOUS MATERIALS AND MIXES APPENDIX 1000-1 DRAFT DOCUMENT ON ISC 9077-1979 CODE 655 OF PRACTICE FOR CORROSION PROTECTION OF STEEL REINFORCEMENT IN RB AND RCC CONSTRUCTION (REVISED) APPENDIX 1200/I-1 HISTORY OF SINKING OF WELL 660 1200/I-2 PLAN OF WELL NOS. 661 1200/II TILT & SHIFT IN WELL NOS. 662 APPENDIX 1500/I INFORMATION TO BE SUPPLIED TO THE 663 MANUFACTURERS OF PROPRIETARY SYSTEMS APPENDIX 1700/I SPECIFICATION FOR CONSTRUCTION JOIN 665 1700/II PERMEABILITY TEST 667 APPENDIX 1800/I TESTS ON SHEATHING DUCTS 668 1800/II PRESTRESSING REPORT 674 1 800/III SPECIFICATIONS FOR GROUTING OF POST - 675 TENSIONED CABLES IN PRESTRESSED CONCRETE 1800/IV GROUTING RECORD 681

General

100 General

General Section 100

101. INTRODUCTION

These Specifications shall apply to all such road and bridge works As are required to be executed under the Contract or otherwise directed by the Engineer-in-charge (hereinafter referred to as the Engineer). In every case, the work shall be carried out to the satisfaction of the Engineer and conform to the location, lines, dimensions, grades and cross- sections shown on the drawings or as indicated by the Engineer. The quality of materials, processing of materials as may be needed at the site, salient features of the construction work and quality of finished work shall comply with the requirements set forth in succeeding sec- tions. Where the drawings and Specifications describe a portion of the work in only general terms, and not in complete detail, it shall be understood that only the best general practice is to prevail, materials and workmanship of the best quality or to be employed and instructions of the Engineer are to be fully complied with.

A list of Indian roads Congress Specifications and Recommended Codes of Practice which have been made use of in the preparations of these Specifications is given at Appendix-1. The latest edition of all Specifications/Standards till 30 (thirty) days before the final date of submission of the tender, shall be adopted.

102. DEFINITIONS The words like Contract, Contractor, Engineer (synonymous with Engineer-in-charge), Drawings, Employer, Government, Works and Work Site used in these Specifications shall be considered to have meaning as understood from the definitions of these terms given in the General Conditions of Contract.

The following abbreviations shall have the meaning as set forth below:

AASHTO : American Association of State Highway and Transportation Officials ASTM : American Society for Testing and Material BS : British Standard published by the British Standards Institution CBR : California Bearing Ratio IRC : Indian Roads Congress IS : Indian Standard published by the Bureau of Indian Standards

The various elements in the cross-section of a road referred to in

these Specifications are shown in the cross-sections in Figs. 100-1 and 100-2.

3

General Section 100

Fig.100.1: Terms used in the specifications to describe road cross-section elements with a flexible pavement.

4

General Section 100

Fig.100.2: Terms used in the specifications to describe road cross-section elements with a concrete pavement

5

General Section 100

Treated shoulders shown in the cross-section shall be of two types:- (i) Head shoulders which have select gravel/moorum, any other compacted

granular layer of bricks.

(ii) Paved Shoulders which have a bituminous surfacing over granular layers

103. MATERIALS AND TEST STANDARDS

The relevant standards for materials, as well as the testing procedures, have been indicated at appropriate places in the Specifi- cations. A list of these standards with their full title and the years of publication applicable is included at Appendix-2.

104. SIEVE DESIGNATIONS

The sieve designations referred to in the Specifications correspond to those specified by Bureau of Indian Standards in IS: 460. Table 100.1 gives the list of the commonly used IS sieves. TABLE 100.1 DESIGNATIONS OF TEST SIEVES

(in mm) (in micron) * 128

106 * 90

75 * 63

53 * 45

37.5 * 31.5

26.5 * 22.4

19.0 * 16.0

13.2 * 11.2

9.50 * 8.00

6.70

850

* 710 600

* 500

425 355 300

* 250

212

* 180 150

* 125

106

* 90 75

* 63

53

* 45

6

General Section 100

* 5.60 4.75

* 4.00

3.35

* 2.80 2.36

* 2.00

1.70

* 1.40 1.18

* 1.00

Note: 1. * are the principal sizes stated in ISO-565 and are preferred. 2. Sieve sizes given in BS:410 & ASTM-E 11 are same as in is:460. 3. Only sieves with square openings shall be used.

105. SCOPE OF WORK

105.1. The work to be carried out under the Contract shall consist

of the various items as generally described in the Tender Documents as Well as in the Bill of Quantities furnished in the Tender Documents.

105.2. The works to be performed shall also included all general works preparatory to the construction of roads, bridges, canal crossings, drainage and all other related works. The works shall include work of any kind necessary for the due and satisfactory construction, completion and maintenance of the works to the intent and meaning of the drawings and these Specifications and further drawings and orders that may be issued by the Engineer from time to time. The scope of work shall include whether specifically mentioned or not in the various clauses of these Specifications, all materials, apparatus, plant, equipment, tools, fuel, water, strutting, timbering, transport, offices stores, workshop, staff, labour and the provision of proper and sufficient protective works, diversions, temporary fencing and lighting. It shall also include: safety of workers, first-aid equipment, suitable accommodation for the staff and workmen with adequate sanitary arrangements, the effecting and maintenance of all insurances, the payment of all wages, salaries, fees, royalties, duties or other charges arising out of the erection of works and the regular clearance of rubbish, reinstatement and clearing-up of the site as may be required on completion of work, safety of the public and protection of the works and adjoining land.

7

General Section 1007

105.3. The Contractor shall ensure that all actions are taken to build in quality assurance in the planning and execution of works The quality assurance shall cover all stages of work suc h as setting out, selection of materials, selection of construction methods, selection of equipment and plant, deployment of personnel and supervisory staff, quality control testing, etc. The work of building in quality assurance shall be deemed to be covered in the scope of the work.

105.4. The Contractor shall furnish, at least 15 days in advance, his programme of commencement of item of work, the method of working he intends to adopt for various items of work such as site clearance, construction for embankment, sub-base, base, surface, culverts, bridges, retaining walls, well-sinking, cast-in-situ piling, construction of cast-in- situ prestressed concrete simply supported girders, cantilever construction of prestressed concrete superstructure, and such other items for which the Engineer demands the submission of the method of working. He shall provide information regarding the details of the method of working and equipment he proposes to employ and satisfy the Engineer about the adequacy and safety of the same. The sole responsibility for the safety and adequacy of the methods adopted by the contractor will, however, rest on the Contractor, irrespective of any approval given by the Engineer.

106. CONSTRUCTION EQUIPMENT In addition to the general conditions indicated in the contract Docu- ments, the following conditions regarding use of equipment in works shall be satisfied.

(a) The Contractor shall be required to give a trial run of the equipment for establishing their capability to achieve the laid down Specifications and tolerance to the satisfaction of the Engineer before commencement of the work.

(b) All equipment provided shall be of proven efficiency and shall be operated

and maintained at all times in a manner acceptable to the engineer.

(c) All the plant equipment to be deployed on the works shall be got approved from the Engineer for ensuring their fitness and efficiency before commence- ment of work.

(d) Any material or equipment not meeting the approval of the Engineer shall be

removed from the site forthwith:

(e) No equipment will be removed from site without permission of the engineer;

(f) The Contractor shall also make available the equipment for site quality control work as directed by the Engineer.

8

General Section 100

107.1. The Contract Drawings provi ded fro tendering purposes shall be as contained in the Tender Documents and shall be used as a reference only. The Contractor should visualize the nature and type of work con- templated and to ensure that the rates and prices quoted by him in the Bill of Quantities have due consideration of the qualitative and quan- titative variations, as may be found at the site and complexities of work involves during actual execution/construction.

107.2. The tendered rates/prices for the work shall be deemed to include the cost of preparation, supply and delivery of all necessary drawings, prints, tracings and negative which the contractor is required to provide in accordance with the Contract.

107.3. Two copies of drawings, on the basis of which actual execution of the work is to proceed, shall be furnished free of cost to the Contractor by the Engineer progressively according to the work programme submitted by the Contractor and accepted by the en- gineer. Drawings for any particular activity shall be issued to the Contractor at least 30 days in advance of the scheduled date of the start of the activity.

107.4. Examination and/or approval by the Engineer of any drawings or other documents submitted by the Contractor shall not relieve the Con- tractor of this responsibilities or liabilities under the Contract.

108. SITE INFORMATION

108.1. The information about the site of work and site conditions in the Tender Documents is given in good faith for guidance only but the Contractor shall satisfy himself regarding all aspects of site conditions.

108.2. The location of the works and the general site particulars are as generally shown on the Site plan/Index plan enclosed with the Tender Documents.

108.3. Whereas the right-of-way to the bridge sites/road works shall be provide to the Contractor by the Engineer, the Contractor shall have to make his own arrangement for the land required by him for site offices, labour camps, stores, etc.

108.4. The quarry charts enclosed with the Tender Documents indicated the location of quarries and other sources from which naturally occurring the location are available, for guidance of the Contractor. The leads indicated in the said charts are only approximate. It is assumed

9

General Section 100 that the Contractor has inspected the quarries, borrow areas etc., before quoting his rates for the work to assess the availability of construction materials in required quantity and quality.

109. SETTING OUT

109.1. The Contractor shall establish working Bench Marks tied with the Reference Bench Mark in the area soon after taking possession of the site. The Reference Bench Mark for the area shall be as indicated in the Contract Documents and the values of the same shall be obtained by the Contractor from the Engineer. The working Bench Marks shall be at the rate of four per km and also at or near all drainage structures. over-bridges and underpasses. The working Bench Marks/levels should be got approved from the Engineer. Checks must be made on these Bench Marks once every month and adjustments, if any, got agreed with the Engineer and recorded. An up-to-date record of all Bench. Marks including approved adjustments, if any, shall be maintained by the Contractor and also a copy supplied to the Engineer for his record.

109.2. The lines and levels of formation, side slopes, drainage works, carriageways and shoulders shall be carefully set out and frequently checked, care being taken to ensure that correct gradients and cross- sections are obtained everywhere.

109.3. In order to facilitate the setting out of the works, the centre lines of the carriageway or highway must accurately established by the Contractor and approved by the Engineer. It must then be accurately referenced in a manner satisfactory to the Engineer, every 50 m intervals in plain and rolling terrains and 20m intervals in hilly terrain and in all curve points as directed by the engineer, with marker pags and chainage boards set in or near the fence line, and a schedule of reference dimensions shall be prepared and supplied by the Contractor to the Engineer. The markers shall be maintained until the works reach finished formation level and are accepted by the Engineer.

109.4. On construction reaching the formation level stage, the centre line shall again in set out by the Contractor and when approved by the Engineer, shall be accurately referenced in a manner satisfactory to the Engineer by marker pegs set at the outer limits of the formation.

109.5. No reference peg or market shall be moved or withdrawn without the approval of the Engineer and no earthwork or structural work shall be commenced until the centre line has been referenced.

109.6. The contractor will be the sole responsible party for safe- 10

General Section 100 guarding all survey monuments, bench marks, beacons, etc. The Engineer will provide the Contractor with the data necessary for setting out of the centre line. All dimensions and levels shown on the drawings or mentioned in documents forming part of or issued under the Contract shall be verified by the Contractor on the site and he shall immediately inform the Engineer of any apparent errors or discrepancies in such dimensions or levels. The Contractor shall, in connection with the staking out of the centre line, survey the terrain along the road and shall submit to the Engineer for his approval, a profile along the road centre line and cross-sections at intervals as required by the Engineer.

109.7. After obtaining approval of the Engineer, work on earthwork can commence and the profile and cross-sections shall form the basis for measurements and payment. The Contractor shall be responsible for ensuring that all the basis traverse points are in place at the commencements of the contract and if any are missing, or appear to have been disturbed, the Contractor shall make arrangements to re-establish these points. A Survey File containing the necessary data will be made available for this purpose. If in the opinion of the Engineer, design modifications of the centre line or grade are advisable, the Engineer will issue detailed instructions to the Contractor and the Contractor shall perform the modification in the field, as required, and modify the ground levels on the cross-sections accordingly as many times as required. There will be no separate payment for any survey work performed by the Contractor. The cost of these service shall be considered as being included in the cost of the items of work in the Bill of Quantities.

109.8. The work of setting out shall be deemed to be a part of general works, preparatory to the execution of work and no separate payment shall be made for the same.

109.9. Precision automatic levels, having a standard deviation of 2 mm per km, and fitted with micrometer attachment shall be used for all double run leveling work. Setting out of the road alignment and measurement of angles shall be done by using theodolite with traversing target, having an accuracy of one second. Measurement of distances shall be done preferably using precision instruments like Distomat.

110. PUBLIC UTILITIES 110.1. Drawings scheduling the affected services like water pipes, sewers, oil pipelines, cables, gas ducts etc owned by various authorities including Public Undertakings and Local Authorities included in the

11

General Section 100 Contract Documents shall be verified by the Contractor for the accuracy of the information prior to the commencement of any work.

110.2. Notwithstanding the fact that the information on affected serviced may not be exhaustive, the final position of these servi ce within the works shall be supposed to have been indicated based on the information furnished by different bodies and to the extent the bodies and familiar with the final proposals. The intermediate states of the works are, however, unknown at the design stage, these being dictated by the Contractors methods of working. Accordingly, the Contractors pro- gramme must take into account t the period of notice and duration of diversionary works and each body as given on the Drawings and the Contractor must also allow for any effect of these services and altera- tions upon the Works and for arranging regular meetings with the various bodies at the commencement of the Contract and throughout the period of the Works in order to maintain the required co-ordination. During the period of the Works, the Contractor shall have no objection if the public utility bodies vary their decisions in the execution of their proposals in terms of programme and construction, provided that, in the opinion of the Engineer, the Contractor has received reasonable notice thereof before the relevant alternations are put in hand.

110.3. No clearance or alterations to the utility shall be carried out unless specially ordered by the Engineer.

110.4. Any services affected by the Works must be temporarily supported by the Contractor who must also take all measures reasonably required by the various bodies to protect their services and property during the progress of the works.

110.5. The Contractor may be required to carry out certain works for and on behalf of the various bodies and he shall also provide. with the prior approval of the Engineer, such assistance to the various bodies as may be authorized by the Engineer.

110.6. The work of temporarily supporting and protecting the public utility services during execution of the works shall be deemed to be part of the contract and no extra payment shall be made for the same.

110.7. The Contractor may be required to carry out the removal or shifting of certain services/utilities on specific orders form the Engineer for which payment shall be made to him. Such works shall be taken up by the Contractor only after obtaining clearance form the Engineer and ensuring adequate safety measures.

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General Section 100

111. PRECAUTIONS FOR SAFEGUARDING THE ENVIRONMENT

111.1. General

The Contractor shall take all precautions for safeguarding the en- vironment during the course of the construction of the works. He shall abide by all laws, rules and regulations in force governing pollution and environmental protection that are applicable in the area where the works are situated.

111.2. Borrowpits for Embankment Construction

Borrowpits shall not be dug in the right-of-way of the road. The stipulations in Clause 305.2.2. shall govern.

111.3. Quarry Operations

The Contractor shall obtain materials from quarries only after the consent of the Forest Department or other concerned authorities is obtained. The quarry operations shall be undertaken within the purview of the rules and regulations in force.

111.4. Control of Soil Erosion, Sedimentation and Water Pollution

The Contractor shall carry out the works in such a manner that soil erosion is fully controlled, and sedimentation and pollution of natural water courses, ponds, tanks and reservoirs is avoided. The stipulations in Clause 306 shall govern,

111.5. Pollution from Hot-Mix Plants and Batching Plants

Bituminous hot-mix plants and concrete batching plants shall be located sufficiently away from habitation, agricultural operations or industrial establishments. The Contractor shall take every precaution to reduce the levels of noise, vibration, dust and emissions from his plant and shall be fully responsible for any claims for damages caused to the owners of property, fields and residences in the vicinity.

111.6. Substances Hazardous to Health

The Contractor shall not use or generate any materials in the works which are hazardous to the health of persons, animaJs or vegetation. Where it is necessary to use some substances which can cause injury to the health of workers, the Contractor shall provide protective clothing or appliances to his workers.

111.7. Use of Nuclear Gauges

Nuclear gauges shail be used only where permitted by the Engineer. 13

General Section 100 The Contractor shall provide the Engineer with a copy of the regulations governing the safe use of nuclear gauges he intends to employ and shall abide by such regulations.

111.8. The Contractor must take all reasonable steps to minimise dust nuisance during the construction of the works.

111.9. All existing highways and roads used by vehicle of the Contractor or any of his sub-contractors or suppliers of materials or plant, and similarly any new road* which are part of 'the works and which are being used by traffic, shall be kept clean and clear of all dust/mud or other extraneous materials dropped by the said vehicles or their tyres. Similarly, all dust/mud or other extraneous materials from the works spreading on these highways shall be immediately cleared by the Contractor.

111.10. Clearance shall be effected immediately by manual sweeping and removal of debris, or, if so directed by the Engineer, by mechanical sweeping and clearing equipment, and all dust, mud and other debris shall be removed entirely from the road surface. Additionally, if so directed by the Engineer, the road surface shall be hosed or watered using suitable equipment.

111.11. Any structural damage caused to the existing roads by the Contractor's construction equipment shall be made good without any extra cost.

111.12. Compliance with the foregoing will not relieve the Contractor of any responsibility for complying with the requirements of any Highway Authority in respect of the roads used by him.

112. ARRANGEMENT FOR TRAFFIC DURING CONSTRUCTION

112.1. General

The Contractor shall at all times carry out work on the highway in a manner creating least interference to the flow of traffic while consistent with the satisfactory execution of t he same. For all works involving improvements to the existing highway, the Contractor shall, in accordance with the directives of the Engineer, provide and maintain, during execution of the work, a passage for traffic either along a pant of the existing carriageway tinder improvement, or along a temporary diversion constructed close to the highway. The Contractor shall take prior approval of the Engineer regarding traffic arrangements during construction.

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General Section 100

112.2. Passage of Traffic along a part of the Existing Car - riageway under Improvement

For widening/strengthening existing carriageway where part width of the existing carriageway is proposed to be used for passage of traffic, treated shoulders shall be provided on the side on which work is not in progress. The treatment to the shoulder shall consist of providing atleast 150 mm thick granular base course covered with bituminous surface dressing in a width of atleast 1.5 m and the surface shall be maintained throughout the period during which traffic uses the same to the satisfaction of the Engineer. The continuous length in which such work shall be carried out, would be limited normally to 500 m at a place. However, where work is allowed by the Engineer in longer stretches passing places atleast 20 m long with additional paved width of 2.5 m shall be provided at every 0.5 km interval.

In case of widening existing two-lane to four-lane, the additional two lanes would be constructed first and the traffic diverted to it and only thereafter the required treatment to the existing carriageway would be carried out. However, in case where on the request of the Contractor, work on existing two-lane carriageway is allowed by the Engineer with traffic using part of the existing carriageway, stipulations as in para above shall apply.

After obtaining permission of the Engineer, the treated shoulder shall be dismantled, the debris disposed of and the area cleared as per the direction of the Engineer.

112.3. Passage of Traffic along a Temporary Diversion

In stretches where it is not possible to pass the traffic on part width of the carriageway, a temporary diversion shall be constructed with 7 m carriageway and 2.5 m earthen shoulders on each side (total width of roadway 12 m) with the following provision for road crust in the 7 m width:

(i) 200 mm (compacted) granular subbase;

(it) 225 mm (compacted) granular base course; and

(iii) Premix carpet with Seal Coal/Mix Seal Surfacing.

The alignment and longitudinal section of diversion including junctions and temporary cross drainage provision shall be as approved by the Engineer.

15

General Section 100

112.4. Traffic Safety and Control

The Contractor shall take all necessary measures for the safety of traffic during construction and provide, erect and maintain such bar - ricades, including signs, markings, flags, lights and flagmen as may be required by the Engineer for the information and protection of traffic approaching or passing through the section of the highway under improvement. Before taking up any construction, an agreed phased programme for the diversion of traffic on the highway shall be drawn up in consultation with the Engineer.

The barricades erected on either side of the carriageway/portion of the carriageway closed to traffic, shall be of strong design to resist violation, and painted with alternate black and white stripes. Red lanterns or warning lights of similar type shall be mounted on the barricades at night and kept lit throughout from sunset to sunrise.

At the points where traffic is to deviate from its normal path (whether on temporary diversion or part width of the carriageway) the channel for traffic shall be clearly marked with the aid of pavement markings, painted drums or a similar device to the directions of the Engineer. At night, the passage shall be delineated with lanterns or other suitable light source.

One-way traffic operation shall be established whenever the traffic is to be passed over part of the carriageway inadequate for two-lane traffic. This shall be done with the help of temporary traffic signals or flagmen kept positioned on opposite sides during all hours. For regulation of traffic, the flagmen shall be equipped with red and green flags and lanterns/lights.

On both sides, suitable regulatory/warning signs as approved by the Engineer shall be installed for the guidance of road users. On each approach, at least two signs shall be put up, one close to the point where transition of carriageway begins and the other 120 m away. The signs shall be of approved design and of reflectory type, if so directed by the Engineer.

112.5. Maintenance of Diversions and Traffic Control Devices

Signs, lights, barriers and other traffic control devices, as well as the riding surface of diversions shall be maintained in a satisfactory condition till such lime they are required as directed by the Engineer. The temporary travelled way shall be kept free of dust by frequent applications of water, if necessary.

16

General Section 100

112.6. Measurements for Payment and Rate

All arrangements for traffic during construction including provision of temporary cross drainage structures, if required, and treated shoulder as described in Clause 112,2 including their maintenance, dismantling and clearing debris, where necessary, shall be considered as incidental to the works and shall be the Contractors responsibility. The construction of temporary diversion including temporary cross drainage structures as described in Clause 112.3, shall be measured in linear metre and the unit contract rate shall be inclusive of full com- pensation for construction (including supply of material, labour, tools etc.). maintenance, final dismantling, and disposal.

113. GENERAL RULES FOR THE MEASUREMENT OF WORKS FOR PAYMENT

113.1. General

All measurements shall be made in the metric system. Different items of work shall be measured in accordance with the procedures set forth in the relevant sections read in conjunction with the General Conditions of Contract. The same shall not, however, apply in the case of lumpsum contracts.

All measurements and computations, unless otherwise indicated, shall be carried nearest to the following limits:

(i) length and breadth 10 mm

(it) height, depth or thickness of

earthwork, sub grade, sub-bases,

bases, surfacing and structural members 5 mm

(iii) areas 0.01 sq. m.

(iv) cubic contents 0.01 cu. m.

In recording dimensions of work, the sequence of length, width and height or depth or thickness shall be followed.

113.2. Measurement of Lead for Materials

Where lead is specified in the Contract for construction materials, the same shall be measured as described hereunder:

Lead shall be measured over the shortest practicable route and not the one actually taken and the decision of the Engineer in this regard shall be taken as final. Distances upto and including 100 m shall be measured in units of 50 m, exceeding 100 m but not exceeding 1 km in units of 100 m and exceeding 1 km in units of 500 m, the half

17

General Section 100 and greater than half of the unit shall be reckoned as one and less than half of the unit ignored. In this regard, the source of the material shall be divided into suitable blocks and for each block, the distance from the centre of the block to the centre of placing pertaining to that block shall be taken as the lead distance.

113-3. Measurement of Pavement Thickness for Payment on Volume Basis

The finished thickness of sub-base, base and bituminous courses to be paid on volume basis shall be computed in the following manner: Levels shall be taken before and after construction, at grid of points 10 m centre to centre longitudinally in straight reaches but 5 m at curves. Normally, on two-lane roads, the levels shall be taken at four positions transversely, at 0.75 and 2.75 m from either edge of the carriageway; and on single lane roads, these shall be taken at two positions transversely, being at 1.25 m from either edge of the carriageway. For multi-lane roads, levels shall be taken at two positions transversely for each lone at locations specified by the Engineer.

Suitable references for the transverse grid lines should be left in the form of embedded bricks on either ends or by other means so that it is possible to locate the grid points for level measurements after each successive course is laid.

For pavement courses laid only over widening portions, atleast one line of levels shall be taken on each strip of widening, or more depending on the width of widening as decided by the Engineer,

Notwithstanding the above, the measurements may be taken at closer intervals also, if so desired by the Engineer, the need for which may arise particularly in the case of estimation of the volume of the material for profile corrective course (levelling course). The average thickness of the pavement course in any area shall be the arithmetic mean of the difference of levels before and after construction at all the grid points falling in that area, provided that the thickness of finished work shall be limited to those shown on the drawings or approved by the Engineer in writing.

As supplement to level measurements, the Engineer shall have the option to take cores/make holes to check the depth of construction. The holes made and the portions cut for taking cores shall be made good by the Contractor by laying fresh mix/material including compacting as required at no extra cost immediately after the measurements are recorded.

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General Section 100

113.4. Checking of Pavement Thickness for Payme nt on Area 7Basis

Where payment for any bituminous course in Section 500 is allowed to be made on area basis, the Engineer may have its thickness checked with the help of a suitable penetration gauge at regular intervals or other means as he may decide.

113.5. Measurement of Bituminous Courses for Payment on Weight Basis

Plant-mixed bituminous materials for pavement courses where des- ignated to be paid on weight basis shall be weighed on accurate scales approved by the Engineer. Approved scales shall mean scales that are of size, capacity, kind and type suitable for the weighing to be done, and these shall be properly and adequately installed and maintained. Prior to the use of the scales and as frequently thereafter as the Engineer may deem necessary to ensure accuracy, the scales shall be checked and approved by the Engineer, or the Engineer may direct the Contractor to have the scales checked by other competent agency at the cost of the Contractor.

Location of the scales shall be as designated by the .Engineer, Trucks used for hauling the material to be weighed shall be weighed empty daily at such times as the Engineer directs, and each truck shall bear a plainly legible identification mark.

For materials specified to be measured by weight, the Engineer will have the option to make measurements of the finished work by volume in accordance with Clause 113.3 and such volumes shall be converted into weight for payment purposes. The factor for conversion from volume measurement to weight measurement shall be computed from the representative density of the compacted material at site determined at locations approved by the Engineer,

114. SCOPE OF RATES FOR DIFFERENT ITEMS OF WORK

114.1. For item rate contracts, the contract unit rates for different items of work shall be payment in full for completing the work to the requirements of the Specifications including full compensation for all the operations detailed in the relevant sections of these Specifications under "Rates". In the absence of any directions to the contrary, the rates are to be considered as the full inclusive rate for finished work covering all labour, materials, wastage, temporary work, plant, equipment, ovcr-

19

General Section 100 head charges and profit as well as the general liabilities, obligations, insurance and risks arising out of General Conditions of Contract.

114.2. The item rates quoted by the Contractor shall, unless otherwise specified, also include compliance with/supply of the following :

(i) General works such as selling out, clearance of site before setting out and clearance of -works after completion;

(ii) A detailed programme for the construction and completion of the worlc(using CPM/ PERT techniques) giving, in addition to construction activities, detailed network activities for the submission and approval of materials, procurement of critical materials and equipment, fabrication of special products/equipment and their in* stallation and testing, and for all activities of the Employer that are likely to affect the progress of work, etc., including updating of all such activities on the basis of the decisions taken at the periodic site review meetings or as directed by the Engineer;

(iii) Samples of various materials proposed to be used on the Work for conducting tests thereon as required as per the provisions of the Contract;

(iv) Design of mixes as per the relevant Clauses of the Specifications giving proportions of ingredients, sources of aggregates and binder along with accompanying trial mixes as per the relevant Clauses of these Specifications to be submitted to the Engineer for his approval before use on the Works;

(v) Detailed design calculations and drawings for all Temporary Works (such as form- work; staging, centering; specialised constructional handling and launching equipment and the like);

(vi) Detailed drawings for templates, support and end anchorage, details for prestressing cable profiles, bar bending and cutting schedules for reinforcement, material lists for fabrication of structural steel, etc;

(vii) Mill test reports for all mild and high tensile steel and cast steel as per the relevant provisions of the Specifications;

(viii) Testing of various finished items and materials including bitumen, cement, concrete, bearings as required under these Specifications and furnishing test reports/certificates;

(ix) Inspection Reports in respect of formwork, staging, reinforcement and other items of work as per the relevant Specifications;

(x) Any other data which may be required as per these Specifications or the Conditions of Contract or any other annexures/schedules forming part of the Contract;

(xi) Any other item of work which is not specifically provided in the Bill of Quantities but which is necessary for complying with the provisions of the Contract;

(xii) All temporary works, formwork and false work;

(xiii) Establishing and running a laboratory with facilities for testing for various items of works as specified in Section 900 and other relevant Clauses, where there is no separate item in the Bill of Quantities for establishing and running a laboratory;

20

General Section 100

(xiv) Cost of in-built provisions for Quality Assurance;

(xv) Cost of safeguarding the environment; and

(xvi) Cost of providing "as-built drawings" in original and two sets of prints.

114.3. Portions of road works beyond (he limits and/or any other

work may be got constructed by the Employer directly through other agencies. Accordingly, other agencies employed by the Employer may be working in the vicinity of the Works being executed by the Contractor. The Contractor shall liaise with such agencies and adjust his construction programme for the completion of work accordingly and no claim or compensation due to any reason whatsoever will be entertained on this account. The Employer will be indemnified by the Contractor for any claims from other agencies on this account.

115. METHODOLOGY AND SEQUENCE OF WORK

Prior to start of the construction activities at site, the Contractor shall, within 30 days after the date of the Letter of Acceptance, submit to the Engineer for approval, the detailed construction methodology including mechanical equipment proposed to be used, sequence of vari- ous activities and schedule from start to end of the project. Programme relating to pavement and shoulder construction shall be an integrated activity to be done simultaneously in a coordinated manner. The methodology and the sequence shall be so planned as to provide proper safety, drainage and free flow of traffic.

116. CRUSHED STONE AGGREGATES

Where the terms crushed gravel/shingle, crushed stone, broken stone or stone aggregate appear in any part of the Tender Documents or Drawings issued for work, they refer to crushed gravel/crushed shingle/crushed stone aggregate obtained from integrated crushing plant having appropriate primary crusher, secondary crusher and vibratory screen.

117. APPROVAL OF MATERIALS

Approval of all sources of material for work shall be obtained in writing from the Engineer before their use on the project.

118, SUPPLY OF QUARRY SAMPLES

Raw and processed samples of the mineral aggregates from the approved quarry shall be submitted by the Contractor at no extra cost.

21

General Section 100

119. USE OF SURFACES BY CONSTRUCTION TRAFFIC

119.1. Ordinarily, no construction traffic shall be allowed on pavement under construction unless authorised by the Engineer. Even in that case the load and intensity of construction traffic should be so regulated that no damage is caused to the subgrade or pavement layers already constructed. Where necessary, service roads shall be constructed for this purpose and the same shall be considered as incidental to the work.

119.2. The wheels or tracks of plant moving over the various pavement courses shall be kept free of deleterious materials,

119.3. Bituminous base course shall be kept clean and uncontami- nated as long as the same remains uncovered by a wearing course or surface treatment. The only traffic permitted access to the base course shall be that engaged in laying and compacting the wearing course or that engaged on such surface treatment where the base-course is to be blinded and /or surface dressed. Should the base course or tack coat on the base course become contaminated, the Contractor shall make good by clearing it to the satisfaction of the Engineer, and if this is impracticable, by removing the layer and replacing it to Specification without any extra cost.

120. SITE OFFICE FOR ENGINEER AND OTHER SUPERVISORY STAFF

120.1. Scope

The work covers the construction and provision of furnished site office accommodation for the supervisory staff of Engineer and main taining the same.

120.2. Description

The Contractor shall arrange to provide fully furnished office accommodation constructed as shown in drawings. Work includes providing electric supply, all electrical items like lights, fans and complete wiring, providing water supply including all pipes, fittings, tanks, tube well, pumps, valves etc. complete, septic tank, sewer lines, drains, fencing, internal surfaced roads etc. complete as shown on the drawings. The Contractor shall provide the office accommodation within 4 months from the date of the commencement of work or 3 months from the date of providing the land and the working drawings for the construction of office accommodation, whichever is later. List of furniture to be

22

General Section 100 provided and maintained for Engineer's site office shall be as in Table 100-2.

Table 100-2. LIST OF FURNITURE TO BE PROVIDED AND MAINTAINED FOR ENGINEER'S _SITE OFFICE

S.No. Item Specifications Nos. Reqd.* 1. Executive table

(for the Engineer) 2. Executive chair

(for the Engineer) 3. Table (for Site

Engineer. Accountant and Head Clerk)

4. Ordinary chair Type

I(For the Engineer, Accountant. Head Clerk and visitors)

5. Table (for ail

other staff) 6. Ordinary chair-Type

II (for all other staff and visitors)

7. Stool 8. Steel Almirah

1980mm x 915mm x 485mm

9. Steel Atmirah

1270mrn x 765 mm x 440 mm

10. Racks - 5 Tier

1800 mm x 900 mm x 375 mm

11. Typewriter

Make - Godrej Modal No. T-I08 or equivalent Make-Godrej Model No, PCH-701 or equivalent Make-Godrej Model No. T-104 or equivalent. Make-Godrej Model No. CHR-6 or equivalent. Make-Godrej Model No T-IOI or equivalent Make-Godrej Model No. CHR-6 or equivalent Make-Godrej Model No. ST-2 or equivalent. Make-Godrej Model No, 1 Storewcl plain or equivalent Make-Godrej Model Minor plain or equivalent Made of slotted angles and M.S. Sheets of Godrej make Electronic-Bilingual (English & Hindi) Network make or equivalent.

23

General Section 100 S.No. Item Specifications Nos. Reqd.* SICE! Cash Chest of size 1.5' x 1.5'

(450 mm x 450 mm) (approx.) Air Coolers Room Heaters Ceiling Fans 1400 mm size Computer with printer Photocopier

Make-Godrej Storewel or equivalent The cooler* shall have 24" (60cm) size fan with suitable pump and shall be of either GEC, Khaitan or Cool Home make or equivalent The heaters shall be of 2000 W capacity - Bajaj make or equivalent Ceiling fans shall be of approved make and colour PC 486 with hard disc capacity 230 MB. Maths coprocessor. Two disc drives of 5.25" (132 mm) and 3.5" (88 mm), 14" (350 mm) size colour VGA monitor lelter- quality dotmatrix printer of 132 columns and 101 Key board Make RICOH Model FT 4065 or equivalent

* Numbers to be decided by the Engineer as per requirements of the Project.

120.3. Ownership

The site office with all services, furniture and finings shall be the property of the Employer. The land for the site office shall be provided by the Engineer and the location shall be as indicated in the Drawings.

120.4. Maintenance

The Contractor shall arrange to maintain the site office until the issue of Taking over Certificate for the complete work. Maintenance includes the day to day upkeep of the building and the surroundings, attending to repairs to various parts of the building, furniture, fittings, office equipment and the connected services as and when necessary, including the periodic white/colour washing of building and painting of wood work, steel work, replacing the broken window/door/ventilator

24

General Section 100 glasses, furniture and other hardware and maintaining necessary watch and ward during day and night.

The Contractor shall arrange to provide uninterrupted supply of electricity and water for the office building. In case of failure of main power/water supply, alternate source shall be available for providing uninterrupted supply. All sources, tappings and connected equipment and fittings, piping, tanks, wiring and all accessories of the main alternate power/water supply, for the site office accommodation shall be the property of the Employer,

120.5. Measurements for Payment The measurement for construction and provision of site office shall

be in square metres of the plinth area of the office accommodation and the payment shall be made after the completion and handing over of the buildings with connected services fully furnished including office equipment for occupation.

If the Contractor fails to hand over the furnished office accommo - dation within the period stipulated under Clause 120,2, an amount of Rs. 15,000 per month or part thereof shall be debited to the Contractor's account for the period of delay.

The measurement for maintenance of Engineer's site office ac- commodation shall be on maintenance months and shall be made on completion of satisfactory maintenance every month.

If at any stage, the Contractor fails to carry out the required maintenance satisfactorily, an amount of Rs. 5000 per month or part thereof shall be debited to the Contractor's account. In addition, the month/months during which the Contractor fails to carry out the required maintenance satisfactorily shall not be measured for payment.

If the Contract works are not completed within the stipulated period or within the granted extended time of completion, maintenance of site office accommodation in accordance with Clause 120,4 shall be carried out by the Contractor at his own cost and as such no payment shall be made for the same. In case of any failure by the Contractor to do so, an amount of Rs. 15,000 per month or part thereof shall be debited to the Contractor's account.

120.6. Rate

The Contract unit rate for constructing and providing the site office accommodation shall include the expenses of all the operations involved

25

General Section 100 in construction of the building including all services, fittings, fixtures, furniture, fencing, internal surfaced roads, as mentioned under Clause 120.2.

The Contract unit rate for maintenance shall include expenses towards all items of works detailed in Clause 120.4 including power and water charges for supply from the mains and for providing uninterrupted supply of power and water from alternate sources in case of failure of main supply.

121. FIELD LABORATORY

121.1. Scope

The work covers the provision and maintenance of an adequately equipped field laboratory as required for site control on the quality of materials and the works.

121.2. Description

The Contractor shall arrange to provide fully furnished and adequately equipped field laboratory constructed as shown in drawings. The field laboratory shall preferably be located adjacent to the site office of the Engineer and provided with amenities like water supply, electric supply etc. as for the site office of the Engineer in Clause 120.2.

The floor space requirement for the field laboratory shall be as indicated in the drawing , It shall include office space for the Materials Engineers, one from the Contractor's side and another from the Engineer's side and a store for the storage of samples. The remaining space shall be provided for the installation of equipment, laboratory tables and cupboards, working space for carrying out various laboratory tests, besides a wash basin, toilet facility and a curing tank for the curing of samples, around 4m x 2m x 1m in size and a fume chamber. The furnishing in each of two offices of the Materials Engineers shall be as provided for the Site Engineer in Table 100-2. Wooden/concrete work- ing table with a working platform area of about 1m x 10m shall be provided against the walls, also providing wooden cupboards above and below the working tables to store accessories such as sample moulds etc. Atleast 4 racks of slotted angles and M.S. sheets as at Sl.No. 10 of Table 100-2 and atleast 6 stools for laboratory test operators as at Sl.No 7 of Table 100-2 shall also be provided.

121.3. Laboratory Equipment

The following items of laboratory equipment shall be provided in the field laboratory.

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General Section 100 121.3.1. General

(i) Oven Electrically operated, thermostatically controlled, range upto 200 C sensitivity 1 C

(ii) Platform balance 300 kg capacity

(iii) Balance 20 kg capacity - self indicating type

(iv) Electronic Balance 5 kg capacity accuracy 0.5 gm

(v) Water bath-electrically operated and thermostatically controlled with adjustable shelves, sensitivity 1C

(vi) Thermometers: Mercury-in-glass thermometer range 0 to250C Mercury-in-steel thermometer with 30cm stem, range upto 30QC

(vii) Kerosene or gas stove or electric hot plate Glasswares, spatulas, wire gauzes. steels cales, measuring tape, casseroles, katahis, enameled trays of assorted sizes, pestle-mortar, porcelain dishes, gunny bags, plastic bags, chemicals, digging tools like pickaxes, shovels etc.

(viii) Set of IS sieves with lid and pan: 450 rnm diameter; 63mm, 53mm, 37.5mm, 26,5mm, 13.2mrn, 9.5 mm 6.7mm and 4.75mm size 200 mm diameter: 2.36mrn, 2.0mm, 1.18mm, 600micron, 425micro 300micron, 150micron, and 75micron

(ix) Water testing kit

(x) First aid box

121.3.2.For soil sand aggregates

(i) Riffle Box

(ii) Atterberg Limits (liquid and plastic limits) determination apparatus

1 No. 1 No. 1 No. 2 No. 1 No. 4 No. 1 No. As required 1 Set. 2 Sets. 1 Set. 1 Set. 1 No. 1 Set.

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General Section 100 (iii) Compaction Test Equipment both 2.5 kg and 4.5 kg

rammers (Light and Heavy compactive efforts)

(iv) Dry Bulk Density Test apparatus (sand pouring cylinder, tray, can etc.) complete

(v) Speedy Moisture Meter complete with chemicals

(vi) Post.-hole Auger with extensions

(vii) Core cutter apparatus 10 cm dia, 10/15 cm height, complete with dolly, rammer etc.

(viii) Aggregate Impact Value Test apparatus/Los Angeles Abrasion Test apparatus

(ix) Flakiness and Elongation Test Gauges

(x) Standard measures of 30, 15 and 3 litres capacity along with standard tamping rod

(xi) California Bearing Ratio lest apparatus

(xii) Unconfined compression test apparatus 121.3.3. For bitumen and bituminous mixes

(i) Penetrometer with standard needles

(ii) Riffle boxsmall size

(iii) Centrifuge type bitumen extractor, hand operated, complete with petrol/commercial benzene

(iv) Marshall stability test apparatus, complete with all accessories

(v) Field density bottle along with cutting tray, chisel, hammer and standard sand

(vi) 3 m straight edge

(vii) Camber board

(viii) Core cutting machine with 10 cm dia diamond cutting edge

(ix) Vacuum pump and 3 specific gravity bottles

1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 No. 1 set 1 set 2 Nos. 1 No. 1 No. 1 set 1 set

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General Section 100 121.3.4. For cement and concrete

(i) Vicat apparatus for testing setting limes (ii) Slump testing apparatus

(iii) Compression and Flexural strength testing machine of 200 tonne capacity with additional dial for flexural testing

(iv) Needle Vibrator (v) Air Meter

(vi) Vibrating hammer for vibrating dry mix as for Dry Lean Cement concrete sub-base

1 set 4 sets 1 No. 2 Nos, 1 No. 1 No.

Note : The item and their numbers listed above in this Cause shall be decided by the Engineer as per requirements of the Project and modified accordingly.

121.4. Ownership

If provided as a separate payable item in the Bill of Quantities, the field laboratory building and equipment shall be the property of the Employers and the land for laboratory will be provided by the Employer.

121.5. Maintenance

If provided for as a separate payable item in the Bill of Quantities, the Contractor shall arrange to maintain the field laboratory in a satisfactory manner until the issue of Taking Over Certificate for the complete work. Maintenance includes all activities described in Clause 120.4.

121.6. Measurements for Payment

If provided as a separate payable item in the Bill of Quantities, the measurement for payment for the construction of the field laboratory shall be on square metres of plinth area. The supply of testing equipment, the erection, maintenance and running the same shall be on a lump sum basis.

121.7. Rate

If provided in die Bill of Quantities as a separate payable item, the contract unit rate for constructing and providing the field laboratory shall include expenses of all operations involved in construction of the building including all services, fittings, fixtures, furniture and fencing as mentioned in Clause 121.2.

The Contract unit rate for maintenance shall include expenses towards all items of works and equipment in Clauses 121.2 and 121,3 including power and water charges for supply from the mains and for .providing uninterrupted supply of power and water from alternate sources in case of failure of main supply.

29

General Section 100

The Contract lumpsum rate for the supply, erection, maintenance and running of testing equipment shall include cost of supply, installation and running including all consumables like chemicals and reagents.

122. SITE RESIDENTIAL ACCOMMODATION FOR ENGINEER AND OTHER SUPERVISORY STAFF

122.1. Scope

The work covers the provision and maintenance of unfurnished site residential accommodation for the Engineer and other supervisory staff.

The Contractor shall arrange to provide residential accommodation constructed as shown in the drawings.

Work includes providing electric supply, all electrical items like wiring, switches, all fittings, lights, fans, etc. complete; providing water supply and sanitation including all pipes, fittings, tanks, tube well, pumps, valves etc. complete; septic tank, sewer lines, drains, fencing, internal roads etc., complete as shown in the drawings.

122.2. Ownership

The site residential accommodation with all services and fittings etc., shall be the property of the Employer. The land for the residential accommodation shall be provided by the Engineer and the location shall be as indicated by the Engineer. The Contractor shall provide the residential accommodation within 4 months from the date of commence - ment of the work or 3 months from the date of providing land and the working drawings for the construction of residential accommo - dation, whichever is later.

122.3. Maintenance

The Contractor shall arrange to maintain the supervisory staff residential accommodation until the issue of Taking Over Certificate for the complete work.

Maintenance includes attending to repairs to various parts of the building, fittings etc. and the connected services as and when necessary, including the annual white/colour washing of the building and periodic painting of wood and steel work; replacing the broken window/door, ventilator glasses and other hardware; and maintenance of internal roads.

The Contractor shall arrange to provide uninterrupted supply of electricity and water for the buildings. In case of failure of main water or power supply, suitable alternate arrangement shall be made for

30

General Section 100 providing uninterrupted supply. All sources/tappings and connected equipment and fittings, piping, tanks, wiring and all other accessories of the main and alternate power/water supply for the residential accommodation shall be the property of the Employer.

122.4. Measurement for Payment

The measurement for construction of the residential accommodation shall be on square metres of plinth area of the accommodation. The payment shall be made after the residential accommodation, complete with all services, fencing etc., is constructed and handed over for occupation. If the Contractor fails to complete and hand over the complete residential accommodation within the period stipulated under Clause 122.2, an amount of Rs. 50,000 per month or part thereof shall be debited to the Contractor's account for the period of delay.

The measurement for maintenance of supervisory staff residential accommodation shall be in maintenance months and shall be made on completion of satisfactory maintenance every month. If at any stage the Contractor fails to carry out the required maintenance satisfactorily, an amount of Rs. 25,000 per month or part thereof shall be debited to the Contractor's account. In addition, the month/months during which the Contractor fails to carry out the required maintenance satisfactorily shall not be measured for payment.

If the Contract works are not completed within the stipulated period or within the granted extended time of completion, maintenance of resi- dential accommodation in accordance with Clause 122.3 shall be carried out by the Contractor at his own cost and as such no payment shall be made for the same. In case of any failure by the Contractor to do so, an amount of Rs. 60,000 per month or pan thereof shall be debited to the Contractor's account.

122.5. Rate

The Contract unit rate for constructing and providing residential accommodation for (he Engineer and other supervisory staff shall include cost of all the operations involved in construction of buildings and connected services and fittings, fencing etc. complete.

The Contract unit rate for maintenance shall include the expenses for all items of work detailed in Clause 122.3 including provision of uninterrupted supply of power and water.

31

General Section 100

123. PROVIDING AND MAINTAINING WIRELESS COMMUNICATION SYSTEM

123.1. Scope

The work covers the provision and maintenance of wireless com- munication systems with necessary mobile/base trans -receivers and other accessories.

123.2. Supply

The Contractor shall arrange to supply, install and commission the complete wireless system of approved quality suitable for a range of upto 65 km. The system shall consist of the following:

(a) Mobile Trans-receiver suit able for mounting on 4 wheelers with Microphone as- sembly, Mobile Antenna with Cable and External Speaker assembly (3 W audio output) with all necessary fittings and accessories - 10 lets.

(b) Base Trans-receivers with Microphone assembly, suitable Antenna, external speaker unit (3 W audio output) with all necessary fittings and accessories - 3 sets,

(c) Hand held radio sets - 10 Nos.

The Contractor shall provide the complete wireless system within 12 months from the date of commencement of work or 8 months from the date on which frequency is allotted to him by the Govt. Department, whichever is later. He shall submit a guarantee for replacement of any defective trans-receiver/trans -receivers during the currency of the con- tract.

123.3. Approval

The Contractor shall arrange to obtain all necessary statutory approvals from various Government bodies for operating the system. He shall also fulfil the requirements laid down by various Government Departments and obtain the frequency to operate the wireless system.

123.4. Maintenance

The Contractor shall arrange to maintain the entire wireless system including the mobile and base trans-receivers and all accessories until the issue of the Taking Over Certificate for the complete work. He shall replace any Trans-receiver or accessory which goes out of order, at his own cost and provide all necessary spares and attend to all repairs necessary for keeping the complete system in satisfactory working condition. On issue of the Taking Over Certificate after obtaining clearance from the Engineer, the Contractor shall dismantle the complete wireless system and hand over to the Engineer,

32

General Section 100

123.5. Measurements for Payment

The measurement for supply and installation of wireless system shall be on lumpsum basis for the complete system as described in the preceding paras.

If the Contractor fails to commission and hand over the complete wireless system in the stipulated time, an amount of Rs. 10,000 per month or part thereof shall be debited to the Contractor's account.

The measurement for maintenance of the wireless system shall be on maintenance months and shall be made on completion of satisfactory maintenance every month. If the Contractor fails to carry out the required maintenance as directed by the Engineer at any stage of work, an amount of Rs. 5000 per month or part thereof shall be debited to the Contractor. In addition, the month/months during which the Contractor fails to carry out the required maintenance shall not be measured for payment. If die Contract Works are not completed within the stipulated period or within granted extended time of completion, the maintenance of wireless system in accordance with Clause 123.4 shall be carried out by the Contractor at his own cost and as such, no payment shall be made for the same. In case of any failure by the Contractor to do so, an amount of Rs. 8000 per month or part thereof shall be debited to the Contractor's account.

123.6. Rates

The Contract unit rate for the supply and installation of wireless system shall cover all the expenses towards the supply of all necessary items and expenses towards obtaining statutory approvals and operating frequency, erection, commissioning and handing over, guarantee for replacement of the trans -receiver/trans -receivers (which are found defec- tive) during the currency of the Contract and all other incidentals.

The Contract unit rate for the maintenance of wireless system shall be payment in full for carrying out periodic servicing and checking of the system, replacement of components, attending to all necessary repair, payment of taxes, if any, and other incidentals to keep the complete system in satisfactory working condition.

124. PROVIDING AND MAINTAINING VEHICLES FOR THE ENGINEER

124.1. Scope The work covers providing and maintaining of hard top passenger

33

General Section 100 cars and /or hard top jeeps for use by the Engineer as described under the Bill of Quantities.

124.2. Description

The passenger cars shall be petrol or diesel driven and may be Am- bassador or equivalent having cylinder capacity of minimum 1400 cc. The hard top jeeps shall be 4 W Drive either petrol or diesel driven and may be Maruti Gypsy Model MG - 410, Mahindra & Mahindra Jeep Model MM-540/MM-440 or equivalent. The number of vehicles to be provided by the Contractor shall be decided by the Engineer at various times, out of the total provision in the Bill of Quantities and indicated in writing.

The Contractor shall provide within one month from the date of order by the Engineer, vehicles as indicated above. The vehicles shall be provided and maintained until issue of the Taking Over Certificate for the complete Work. Initially, new vehicles shall be provided. In case of vehicles of Indian make, a vehicle shall be replaced with a new vehicle after a maximum run of 75,000 km or two years whichever is earlier. In case of vehicles of foreign make approved by the Engineer, the vehicle shall be replaced with a new vehicle after a maximum run of 1,00,000 km or three years whichever is earlier. All necessary taxes for operating the vehicles shall be fully paid and all necessary papers shall be provided as required by prevailing Motor Vehicles Act with comprehensive insurance cover for the vehicles. The vehicles shall be provided day and night as required by the Engineer. The Contractor shall also make available drivers having valid licence at such times and for such duration as instructed by the Engineer.

124.3. Maintenance

The vehicles shall be maintained in a smooth running condition. All expenses required for keeping the vehicles in smooth running condition such as fuel, lubrication oil and other consumables, necessary service and maintenance, drivers, repairs and replacement etc. are to be met by the Contractor. In the event of any vehicle being off the road for maintenance or on account of breakdown, the Contractor shall provide substitute vehicle(s) immediately. If the Contractor at any time fails to provide vehicle(s) or substitute vehicle(s) as specified above, an amount of Rs. 500 per day or part thereof for each vehicle (that the Contractor failed to provide) shall be debited to the Contractor's account. Also the number of days for which the vehicle(s) were not provided shall not be included for payment.

34

General Section 100

If the Contract Works are not completed within the stipulated period or within the granted extended time of completion, provision and main- tenance of vehicles in accordance with Clause 124,1 through 124.4 shall be carried out by the Contractor at his own cost and no payment shall be made for the same. In case of any failure by the Contractor to do so, an amount of Rs. 700 per day or part thereof per vehicle shall be debited to the Contractor's account.

124.4. Withdrawal of Vehicles

The Contractor shall withdraw particular vehicle/vehicles for the non-use by the Engineer if so directed by the Engineer. In such cases- the instructions for non-use of vehicle shall be given in writing 15 days in advance and the withdrawal of vehicles shall not be for a period of less than 15 days continuously at a time.

124.5. Measurements for Payment

The payment for providing and maintaining vehicles shall be on vehicle day basis for actual number of days the vehicles were provided in satisfactory working order. No payment shall be made for the period of withdrawal as per Clause 124.4 irrespective of the fact whether vehicle was available or not.

124.6. Rates

The Contract unit rate for providing and maintaining vehicles for Engineer shall include all expenses towards providing and keeping the vehicles in smooth running condition including taxes etc., mentioned in the preceding paras.

125. SUPPLY OF COLOUR RECORD PHOTOGRAPHS AND ALBUMS

125.1. Scope

The work covers the supply of photographs, negatives and albums to serve as a permanent record of various stages/facets of the work needed for an authentic documentation as approved by the Engineer.

125.2. Description

The Contractor shall arrange to take colour photographs at various stages/facets of the work including interesting and novel features of the work as desired by the Engineer. The photographs shall be of acceptable quality and they shall be taken by a-professionally competent photographer with camera having the facility to record the date of

35

General Section 100 photographs taken in the prints and negative. The Contractor shall supply two colour prints of each of the photographs taken to the standard postcard size mounted in albums of acceptable quality. Also the negative in 35 mm size shall be supplied for each photograph. Each photograph in the album shall be suitably captioned.

125.3. Measurements for Payment Supply of two copies of colour record photographs mounted in

the albums and the negative thereof shall be measured in number of record photographs supplied.

Supply of additional prints of co lour record photographs shall be measured in number of additional prints supplied.

125.4. Rate

The rate for the supply of record photographs shall include the cost of taking the photographs, developing and obtaining colour prints, cost of album, mounting of photographs and captioning the same etc.

The rate for additional colour prints shall similarly include all costs incurred.

The photographs and materials including negatives shall form a par: of the records of the Department and the prints of the same cannot be supplied to anybody else or published without the written permission of the Department.

126. SUPPLY OF VIDEO CASSETTES

126.1. Description

The work consists of taking video films of important activities of the work as directed by the Engineer during the currency of the project and editing them to a video film of playing time not less than 60 minutes and upto 180 minutes as directed by the Engineer, It shall contain narration of the activities in English by a competent narrator. The edition of the video film and the script for narration shall be as approved by the Engineer. The video cassettes shall be of acceptable quality and the film shall be capable of producing colour pictures.

126.2. Measurements for Payment

The measurement shall be by number of sets of edited master cassettes each with four copies thereof.

36

General Section 100

126.3. Rates

The contract unit rate shall include all expenses for making video films with the help of a professionally competent photographer, editing, narration and supplying the final edited master cassette alongwith four copies thereof.

37

Site Clearance

200 Site Clearance

Site Clearance Section 200

201. CLEARING AND GRABBING

201.1. Scope

This work shall consist of cutting, removing and disposing of all materials such as trees, bushes, shrubs, stumps , roots, grass, weeds, lop organic soil not exceeding 150 mm in thickness, rubbish etc., which in the opinion of the Engineer are unsuitable for incorporation in the works, from the area of road land containing road embankment, drains, cross-drainage structures and such other areas as may be specified on the drawings or by the Engineer., It shall include necessary excava- tion, backfilling of pits resulting from uprooting of trees and stumps to required compaction, handling, salvaging, and disposal of cleared materials. Clearing and grubbing shall be performed in advance of earthwork operations and in accordance with the requirements o