Quality Assurance Handbook for Rural Roads Volume-I - pmgsy
Quality Assurance Handbook for Rural Roads Volume-I - pmgsy Quality Assurance Handbook for Rural Roads Volume-I - pmgsy
SECTION 1300 179 Quality Assurance Handbook for Rural Roads PROTECTION WORKS AND DRAINAGE
1300: PROTECTION WORKS AND DRAINAGE A. Methodology General 181 Quality Assurance Handbook for Rural Roads In this section, the construction and quality control aspects of aprons, pitching on slopes, masonry flooring over cement concrete bedding, curtain wall besides chute, roadside and hill drains have been dealt with. A-1 Apron 1. Keep the length of apron not less than twice the depth of curtain wall. 2. Level the surface on which the apron is to be laid and prepare for the length and width as shown on drawings. In case the surface is below low water level, raise the ground level by dumping earth, moorum, brick bats, stones, etc., so that apron can be laid thereon. 3. Provide flexible apron beyond curtain walls for a minimum distance of 3 m on upstream side and 6 m on downstream side unless specified otherwise. 4. For regular and orderly disposition of stone in apron, build template cross walls in dry masonry, of about 1 m thickness and full height specified at 30 m intervals all along the length. Hand pack stone within these walls. 5. Use wire crates of galvanized steel wire of 4 mm dia with apertures not less than 150 mm. 6. Use insitu built wire-crates of size 2 m x 1 m x 0.3 m to 7.5 m x 3 m x 0.6 m and securely stay at 1.5 m intervals or less. 7. Place the crates in position before filling in boulders. A-2 Pitching on Slopes 1. Use quarry stone of minimum 225 mm thickness or 30 kg as pitching or as specified, and spalls of minimum 25 mm size to fill the voids. Alternatively PCC blocks of 190 x 190 x 225 mm size (minimum) in M15 Concrete can be used for pitching. 2. Provide one or two layers of graded materials (filter medium) of 150 mm thick or as specified under the pitching to drain off the seepage water and prevent erosion of base material. 3. Trim the sides of banks to the required slope and provide before laying the pitching. Fill the depressions and thoroughly compact before hand. 4. Start the lowest course of pitching from the toe wall and build courses upwards. Use either dry rubble or brick masonry for toe wall. 5. Use dry masonry, when two or more layers of stones are to be laid to obtain design thickness of pitching and bond the stones well. Template cross walls in dry masonry can be built, as done for aprons. 6. When bricks are to be laid in more than one layer, ensure proper bonding the adjacent layers by means of sufficient number of pin headers extending from one layer to the other.
- 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 160 and 161: SECTION 1200 167 Quality Assurance
- 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 172 and 173: 3. Section-1300 A-3 Toe Protection
- Page 174 and 175: 3. Section-1300 2. Stones for pitch
- Page 176 and 177: SECTION 1400 187 Quality Assurance
- Page 178 and 179: 3. Section-1400 3. Give streamline
- Page 180 and 181: 3. Section-1400 2. Tests during con
- Page 182 and 183: SECTION 1500 195 Quality Assurance
- 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 202 and 203: SECTION 1600 217 Quality Assurance
- 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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- Page 212 and 213: 231 Quality Assurance Handbook for
- Page 214 and 215: 1904 : MAINTENANCE OF BITUMINOUS SU
- Page 216 and 217: 4.6 Settlement and Upheaval 235 Qua
- Page 218 and 219: 2. Surface Finish 237 Quality Assur
SECTION 1300<br />
179<br />
<strong>Quality</strong> <strong>Assurance</strong> <strong>Handbook</strong> <strong>for</strong> <strong>Rural</strong> <strong>Roads</strong><br />
PROTECTION WORKS<br />
AND DRAINAGE