Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

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3. Section-400 (ii) Atterberg limits: the material passing 425 micron sieve when tested according to IS: 2720 (part 5) shall have liquid limit and plasticity index not more than 25 and 6 percent respectively. (iii) On clayey subgrades, the material passing IS Sieve 0.075 mm should not exceed 5 per cent. (iv) CBR value: The material with a minimum CBR value of 20 will be acceptable for granular sub-base. In case the subbase material of the requisite CBR is not available within economical leads, the subbase material meeting any of the specified grading and other requirements with a soaked CBR of not less than 15 can be permitted with the approval of the competent authority. (v) The wet aggregate Impact Value (IS:5640) shall not exceed 50. 2. Horizontal Alignment The edges of the sub-base shall be correct within a tolerance limit of (±) 30 mm in plain and rolling terrain and (±) 50 mm for hilly terrain. 3. Surface Levels The tolerance in surface level for granular sub-base will be restricted to (+) 10 mm and (-) 20 mm. A grid of 10 m by 2.5 m may be formed to check the surface level. The cross profile should conform to the required camber. 4. Surface Regularity The maximum permitted difference between the sub-base and 3 m straight edge shall be 12 mm for longitudinal profile and 10 mm for cross profile. The cross profile should conform to the required camber. 5. Degree of Compaction Density shall be 100 per cent of maximum dry density for the material determined as per IS:2720, Part 7. 6. Quality Control Tests 6.1 Tests Prior to Construction (i) The quality control tests to be carried out prior to construction are indicated in Table 401.2. (ii) For existing approved sources, the test frequency shall be as indicated in Table 401.2. (iii) For new sources, test frequencies shall be increased to atleast three tests for each source (average of three tests). (iv) The samples shall be taken at representative locations and at mean depth of proposed excavation. 42
6.2 Tests During Construction The field quality control tests during construction are indicated in Table 401.3. 43 Quality Assurance Handbook for Rural Roads TABLE 401.2 : QUALITY CONTROL TESTS PRIOR TO CONSTRUCTION Type of Test Frequency 1. Soil Classification as per IS:1498. Average of three tests from each source. i) Wet Sieve Analysis, except for cohesionless soils ii) Liquid and Plastic Limits 2. Combined Grading and Plasticity tests on materials One test on the combined material for 500 m length of from different sources, mixed in the design road or part thereof. proportions. This shall be done when materials from more than one source are combined. 3. Proctor Compaction Test (IS:2720 Part 7). One test on the material from each source or on the combined material, as the case may be. 4. Wet Aggregate Impact Value Test (IS:5640) where One test from each source identified by the Contractor. soft/marginal aggregates are used e.g, Laterite, Kankar, Brick Ballast etc. 5. CBR test (IS:2720 Part 16) on representative sample One test per km length. (average of a set of three compacted at 100% Proctor dry density. specimens). Note: Where materials from more than one source are to be combined in the desired proportions, the tests at Sl. Nos. 2, 3 and 5 should be carried out on the combined material. TABLE 401.3 : QUALITY CONTROL TESTS DURING CONSTRUCTION Type of Test Frequency 1. Wet Sieve Analysis (IS:2720 Part 4) on the GSB material combined in the design proportions from various sources. Atleast one test to be carried out daily. 2. Liquid and Plastic Limit tests (IS:2720 Part 5). -do- 3. Placement Moisture Content: Any of the rapid Atleast 3 tests to be carried out daily, well spread over methods for determination of moisture content can the day’s work. be used. (IS:2720 Part 2) 4. Insitu Density measurements (IS:2720 Part 28). -do- 5. Thickness of Compacted layer At random 6.3 Quality Control Checks by AE/EE The quality control checks by AE/EE are indicated in Table 401.4.
Page 2 and 3: Ministry of Rural Development Gover
Page 4 and 5: FOREWORD PREFACE ABBREVIATIONS QUAL
Page 6 and 7: Section 1100 PIPE CULVERTS 163 to 1
Page 8 and 9: PREFACE A good road network has an
Page 10 and 11: AE : Assistant Engineer AIV : Aggre
Page 12 and 13: 1. BACKGROUND 1 Quality Assurance H
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Page 16 and 17: Material tests Workmanship tests Se
Page 18 and 19: 2. Quality Management System (iii)
Page 20 and 21: 2. Quality Management System A typi
Page 22 and 23: 105. CONSTRUCTION EQUIPMENT 13 Qual
Page 24 and 25: B Do’s and Don’ts Do’s Don’
Page 26 and 27: 201 & 202. SITE CLEARANCE A Methodo
Page 28 and 29: 301. EMBANKMENT CONSTRUCTION A Meth
Page 30 and 31: (vii) Materials in a frozen conditi
Page 32 and 33: B. Earthwork for Subgrade (Cutting
Page 34 and 35: 302. EARTHWORK IN CUTTING A. Method
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Page 42 and 43: B. Quality Control Requirements 1.
Page 44 and 45: SECTION 400 39 Quality Assurance Ha
Page 48 and 49: 3. Section-400 C Do’s and Don’t
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Page 54 and 55: 3. Section-400 Table 403.3 : QUALIT
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Page 58 and 59: 3. Section-400 6.3 Quality Control
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Page 66 and 67: 3. Section-400 (ii) Grading Require
Page 68 and 69: 3. Section-400 C Do’s and Don’t
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Page 84 and 85: SECTION 500 BITUMINOUS 81 Quality A
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3. Section-500 (b) Bitumen The bind
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3. Section-500 TABLE 506.1 RATE OF
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3. Section-500 TABLE 507.1: NOMINAL
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3. Section-500 5. Quality Control T
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3. Section-500 TABLE 508.1.1 : QUAN
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3. Section-500 Table 508.1.3: QUALI
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3. Section-500 B. Quality Control R
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3. Section-500 (ii) Immediately the
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3. Section-500 512. MODIFIED BITUME
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3. Section-500 TABLE 512.5 : REQUIR
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Annex-III & IV DETERMINATION OF IN-
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SIMPLE/HANDFEEL TESTS 600 600.1 Bri
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119 Quality Assurance Handbook for
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SECTION 600 121 Quality Assurance H
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3. Section-600 4. Build the courses
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3. Section-600 (v) Storage of mater
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3. Section-600 3.3. Quality Control
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700 : STONE MASONRY FOR STRUCTURES
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(v) Stone Masonry 133 Quality Assur
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4.2. Tests / checks during construc
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SECTION 800 CONCRETE FOR STRUCTURES
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3. Section-800 2. Proceed with conc
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3. Section-800 TABLE 800.3: REQUIRE
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3. Section-800 c. The strength of a
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3. Section-800 4.2 Tests / checks d
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SECTION 900 149 Quality Assurance H
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3. Section-900 2. Lower centering g
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3. Section-900 C. Do’s and Don’
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1000 STEEL REINFORCEMENT A. Methodo
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3.2 Tests during construction 159 Q
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1100: PIPE CULVERTS A. Methodology
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SECTION 1200 167 Quality Assurance
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3. Section-1200 A2 Substructures Th
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3. Section-1200 4. Provide 75 mm ce
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3. Section-1200 (2) Tolerances 1200
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3. Section-1200 3.2 Tests / checks
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3. Section-1300 A-3 Toe Protection
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3. Section-1300 2. Stones for pitch
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3. Section-1400 3. Give streamline
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3. Section-1400 2. Tests during con
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3. Section-1500 5 Mark location and
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3. Section-1500 (iv) Water Water us
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3. Section-1500 TABLE 1501.3: QUALI
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3. Section-1500 2. Check the in-sit
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3. Section-1500 TABLE NO. 1502.3: P
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3. Section-1500 1503: RECTANGULAR C
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3. Section-1500 3.2 Tests during co
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3. Section-1500 1504: INTERLOCKING
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3. Section-1500 2. Quality Control
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3. Section-1600 The prescribed road
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3. Section-1600 C. Do’s and Don
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1700. TRAFFIC SIGNS AND MARKINGS A.
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1904 : MAINTENANCE OF BITUMINOUS SU
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4.6 Settlement and Upheaval 235 Qua
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2. Surface Finish 237 Quality Assur
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1908 : MAINTENANCE OF CULVERTS AND
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4. Quality Monitoring only in excep
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1. SECTION 100: GENERAL 1.1: Qualit
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10 5R 60 106 25 DIA WELDED 21 DIA 1
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4. Section-300 (b) Carry out an ins
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4. Section-300 Photo 1. Visual Clas
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Test 1 261 Quality Assurance Handbo
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4. Section-500 (iii) Check the aggr
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5. SECTION 1100:PIPE CULVERTS 267 Q
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6. SECTION 1300: PROTECTION WORKS A
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4. Section-1500 In case of cracked
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4. Section-1700 2. Road Markings C
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Appendix-1 1.4 Estimating Plasticit
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Appendix-1 1.8 Simple Gadgets for E
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Appendix-1 (ii) Make two identical
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Appendix-1 (ii) Workability: Take a
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Appendix-2 Curing : Covering the c
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Appendix-3 Sr. Code/ Title of the P
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Quality Assurance Handbook for Rura
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Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

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