particular specifications (road works) - CIDCO Maharashtra Ltd.

More documents

Recommendations

Info

CIDCO OF MAHARASHTRA LTD C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2010–11 Pg. No. 490 iv) The aggregates both fine and coarse shall be hard, strong, durable clean, free from veins and adherant coatings. The use of flaky and elongated pieces of aggregates shall be prohibited. v) The aggregates shall not contain deleterious materials such as iron pyrite, coal, mica, shale or similar laminate material, clay, alkali, soft fragments, sea shells, organic impurities etc. in such quantity as to affect the strength of durability of concrete or the reinforcement embedded in such reinforced concrete. vi) The maximum quantities of deleterious material they may be permitted shall conform to the following limits by weight. Deleterious substance Fine aggregates percent by weight Coarse aggregates percent by weight Uncrushed Crushed Uncrushed Crushed 1. Coal and lignite 1.00 1.00 1.00 1.00 2. Clay lumps 1.00 1.00 1.00 1.00 3. Soft fragments -- -- 3.00 -- 4. Material passing through 75 microsieve 3.00 3.00 3.00 1.00 5. Shale 1.00 -- -- -- vii) The total of various deleterious materials occurring in any sample shall, in no case, exceed 5 per cent. viii) If the aggregate supplied in unclean, it shall be washed. If it is not properly graded, it shall be screened by hand or by mechanical means and the various sizes proportioned to get the required grading.
CIDCO OF MAHARASHTRA LTD C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2010–11 Pg. No. 491 ix) Storing of aggregate on dusty, muddy and grassy spots shall be avoided. They shall be stored on the works in such a manner as to prevent intrusion of foreign matter and protected from exposure to dust. They shall be placed in stock piles in individual units of suitable sizes and in suitable layers to prevent segregation. They shall not be allowed to run down slopes. c) Sand or fine aggregates All fine aggregates shall consist of clean, hard, strong, durable uncoated siliceous gritty material consisting of well graded particles obtained from rock fragment. It shall be free from clay lumps injurious amount of dust, mica shells, soft or flaky particles, shale, alkali, organic matter load or other deleterious substances. i) The sand shall be taken from source approved by the Engineer. The sand or fine aggregate shall conform to the latest I.S. No.383. ii) If the Engineer considers it necessary, it shall be washed and/or screened before use, at the expense of the Contractors. iii) The sand shall have a fineness modulus of not less than 2.5 and not more than 3.0 and the grading shall conform as far as possible to the following analysis. I .S. Sieve No. Natural sand or crushed gravel Percent passing Crushed Stone 480 95 – 100 90 – 100 240 70 – 95 60 – 90 120 45 – 85 40 – 80 60 25 – 60 20 – 50 30 5 – 30 5 – 30 15 0 - 10 0 – 15
Page 1 and 2:
CIDCO OF MAHARASHTRA LTD C.A.No.01/
Page 3 and 4:
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192: CIDCO OF MAHARASHTRA LTD C.A.No.01/
Page 241: CIDCO OF MAHARASHTRA LTD C.A.No.01/
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
Page 317 and 318:
Page 319:
show all

particular specifications (road works) - CIDCO Maharashtra Ltd.

Create successful ePaper yourself

Delete template?

Save as template?