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. 468 distance therefrom to be well clear of all intended excavation, so arranged that a sight-rail when fixed level against the post will cross the centre of the manhole. The posts must also be so set up that the longitudinal direction of the rail may be as clear as possible of the direction of any of the lines of pipes or drains converging to the manhole. If walls of buildings afford suitable means of fixing the sight-rail, the post may, however the dispensed with. The sight rails must not in any case be more than 30 M. apart intermediate rails therefore be put up if necessary. 23.2 Construction of boning staves 23.3 Site rails Boning staves shall be prepared by the contractors about 75 mm by 50 mm of various lengths, each length being of a certain number of Metre and with a fixed tee-head ad a fixed intermediate cross piece, each about 300 mm long. The top edge of the cross piece must be fixed at distance below the top edge of this tee-head, equal to as the case may be, the out side diametre of the pipe or thickness of the concrete bed to be laid. The boning staff, must be marked on both sides to indicate its full length. According to the circumstances of each case, a suitable length of boning staff will be determined upon, and the reduced level of the bed of the pipe or bottom of concrete of drain at each sight-rail added to the selected length of boning staff, will be marked by a horizontal line on both posts, or on walls or fences to which the sight-rail is to be fixed. a) The sight-rails (about 25 cm wide and 40 mm thick) is to be screwed with the top edge against the level marks. The centre line of the pipe sewer or the drain will be marked on the rail and this mark will
CIDCO OF MAHARASHTRA LTD C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2010–11 Pg. No. 469 denote also the meeting point of the centre lines of any converging drains or pipe sewers. A line drawn from the top edge one rail to the top of edge of the next rail will be vertically parallel with the bed of the sewer or drain and the depth of the bed of the sewer or drain at any intermediate point may be easily determined by letting down the selected boning staff until the tee-head comes in the line of sight from rail to rail. b) The posts and rails are to be perfectly square and planed smooth on all sides and edges. The rails are to be painted white on both sides, and the tee-heads and cross piece of the boning staves are to be painted black. c) If the pipes or drains converging to a manhole come in at various levels, there must be a rail fixed for every different level. When a rail comes within 0.60 M. of the surface of the ground, a higher sight- rail must be fixed for use with the rail over the next point. d) The posts and rails must in no case be removed until the trenches is excavated, the drains are constructed or the pipes are laid and permission given to proceed with the filling in. 24.0 FOUNDATIONS IN SOFT GROUNDS a) When work of constructing the sewers has to be carried out in soft under ground strata, such as puddle etc. or in a reclaimed land, a good foundations shall be provided for the pipes and manholes. For the former, excavation in the trench shall be taken 75 mm deeper than what is ordinarily required and for this depth the whole of the trenches shall be covered with M-150 concrete slab of the required
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: CIDCO OF MAHARASHTRA LTD C.A.No.01/
Page 219: CIDCO OF MAHARASHTRA LTD C.A.No.01/
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
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.

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?