Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

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SECTION 1200 167 Quality Assurance Handbook for Rural Roads RCC SLAB CULVERTS AND MINOR BRIDGES
1200: RCC SLAB CULVERTS AND MINOR BRIDGES General 169 Quality Assurance Handbook for Rural Roads A culvert is a cross drainage structure having a total length of 6 m or less between the inner faces of dirt walls or extreme ventway boundaries measured at right angles. A minor bridge is a bridge having a total length upto 60 m. A small bridge is a bridge where the overall length of bridge between the inner faces of dirt walls is upto 30 m and where individual span is not more than 10 m. In rural roads, individual span lengths upto 15 m are used exceptionally. In this section different items of RCC solid slabs, box culverts, and composite bridges have been dealt with. The cross sections of foundations, substructures such as abutments, return walls besides design of superstructure, drainage spouts, railings, parapets etc. and all other details shall be strictly in accordance with contract documents. For minor bridges having overall length of 30 m and above, a method statement for construction indicating items (a) to (j) as per clause 1201 (xi) of MoRD Specifications for Rural Roads, shall be submitted. A. Methodology A1 Foundations 1. Take the minimum depth of foundation upto the stratum having specified bearing capacity shown on drawing but not less than 2 m below the scour level where no bed protection is provided or 1.5 m below the protected bed level. 2. In case of rocky bed, ensure embedment of foundation into the rock below, the minimum depth being 500 mm for hard rocks and 1200 mm for soft erodible rocks. 3. Provide 300 mm thick plain concrete M15 grade footing, unless otherwise specified on the drawings. Provide a minimum offset of 150 mm for the base of substructure. 4. Set out plan dimension of the foundation at the bottom of foundation trench and check with respect to original reference line and axis. 5. Before laying foundation concrete, clean the earth surface of all loose material and sprinkle water to wet. Provide side formwork as per required dimensions and height. 6. Lay foundation concrete continuously to the required thickness upto the level of construction joint proposed. 7. Finish the concrete surface smooth with a trowel and ensure curing as specified in Section 800. 8. Carryout dewatering where necessary for laying of concrete so as to keep the water level below foundation level with adequate provisions/ precautions. 9. Remove loose sand laid on foundation before commencement of back filling. Refill all spaces excavated and not occupied by permanent work with earth upto surface of surrounding ground. In case of excavation in rock, fill the circular space with M15 concrete.
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Ministry of Rural Development Gover
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FOREWORD PREFACE ABBREVIATIONS QUAL
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Section 1100 PIPE CULVERTS 163 to 1
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PREFACE A good road network has an
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AE : Assistant Engineer AIV : Aggre
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1. BACKGROUND 1 Quality Assurance H
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3 Quality Assurance Handbook for Ru
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Material tests Workmanship tests Se
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2. Quality Management System (iii)
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2. Quality Management System A typi
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105. CONSTRUCTION EQUIPMENT 13 Qual
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B Do’s and Don’ts Do’s Don’
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201 & 202. SITE CLEARANCE A Methodo
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301. EMBANKMENT CONSTRUCTION A Meth
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(vii) Materials in a frozen conditi
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B. Earthwork for Subgrade (Cutting
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302. EARTHWORK IN CUTTING A. Method
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31 Quality Assurance Handbook for R
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B. Quality Control Requirements 1.
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SECTION 400 39 Quality Assurance Ha
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3. Section-400 (ii) Atterberg limit
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3. Section-400 C Do’s and Don’t
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3. Section-400 TABLE 402.2: GRADING
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3. Section-400 2. The pulverization
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3. Section-400 Table 403.3 : QUALIT
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3. Section-400 6. The cement stabil
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3. Section-400 6.3 Quality Control
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3. Section-400 14. In case the scre
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3. Section-400 TABLE 405.4: APPROXI
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3. Section-400 (ii) Grading Require
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3. Section-400 C Do’s and Don’t
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3. Section-400 408. Local materials
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3. Section-400 B. Quality control r
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3. Section-400 409. LIME-FLYASH STA
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3. Section-400 4. Surface Regularit
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3. Section-400 (ii) Slag The broad
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3. Section-400 6. The thickness of
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3. Section-400 2. Horizontal Alignm
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SECTION 500 BITUMINOUS 81 Quality A
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3. Section-500 (iii) In the final l
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3. Section-500 3. The primer should
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3. Section-500 B. Quality Control R
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3. Section-500 TABLE 504.2: PHYSICA
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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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Page 112 and 113: 3. Section-500 512. MODIFIED BITUME
Page 114 and 115: 3. Section-500 TABLE 512.5 : REQUIR
Page 116 and 117: Annex-III & IV DETERMINATION OF IN-
Page 118 and 119: SIMPLE/HANDFEEL TESTS 600 600.1 Bri
Page 120 and 121: 119 Quality Assurance Handbook for
Page 122 and 123: SECTION 600 121 Quality Assurance H
Page 124 and 125: 3. Section-600 4. Build the courses
Page 126 and 127: 3. Section-600 (v) Storage of mater
Page 128 and 129: 3. Section-600 3.3. Quality Control
Page 130 and 131: 700 : STONE MASONRY FOR STRUCTURES
Page 132 and 133: (v) Stone Masonry 133 Quality Assur
Page 134 and 135: 4.2. Tests / checks during construc
Page 136 and 137: SECTION 800 CONCRETE FOR STRUCTURES
Page 138 and 139: 3. Section-800 2. Proceed with conc
Page 140 and 141: 3. Section-800 TABLE 800.3: REQUIRE
Page 142 and 143: 3. Section-800 c. The strength of a
Page 144 and 145: 3. Section-800 4.2 Tests / checks d
Page 146 and 147: SECTION 900 149 Quality Assurance H
Page 148 and 149: 3. Section-900 2. Lower centering g
Page 150 and 151: 3. Section-900 C. Do’s and Don’
Page 152 and 153: 1000 STEEL REINFORCEMENT A. Methodo
Page 154 and 155: 3.2 Tests during construction 159 Q
Page 156 and 157: 1100: PIPE CULVERTS A. Methodology
Page 158 and 159: 165 Quality Assurance Handbook for
Page 162 and 163: 3. Section-1200 A2 Substructures Th
Page 164 and 165: 3. Section-1200 4. Provide 75 mm ce
Page 166 and 167: 3. Section-1200 (2) Tolerances 1200
Page 168 and 169: 3. Section-1200 3.2 Tests / checks
Page 170 and 171: SECTION 1300 179 Quality Assurance
Page 172 and 173: 3. Section-1300 A-3 Toe Protection
Page 174 and 175: 3. Section-1300 2. Stones for pitch
Page 178 and 179: 3. Section-1400 3. Give streamline
Page 180 and 181: 3. Section-1400 2. Tests during con
Page 184 and 185: 3. Section-1500 5 Mark location and
Page 186 and 187: 3. Section-1500 (iv) Water Water us
Page 188 and 189: 3. Section-1500 TABLE 1501.3: QUALI
Page 190 and 191: 3. Section-1500 2. Check the in-sit
Page 192 and 193: 3. Section-1500 TABLE NO. 1502.3: P
Page 194 and 195: 3. Section-1500 1503: RECTANGULAR C
Page 196 and 197: 3. Section-1500 3.2 Tests during co
Page 198 and 199: 3. Section-1500 1504: INTERLOCKING
Page 200 and 201: 3. Section-1500 2. Quality Control
Page 204 and 205: 3. Section-1600 The prescribed road
Page 206 and 207: 3. Section-1600 C. Do’s and Don
Page 208 and 209: 1700. TRAFFIC SIGNS AND MARKINGS A.
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227 Quality Assurance Handbook for
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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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