O-1998-2267 - Laserfiche WebLink

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. .. . e C.3.11 Restoration 1. Grassed Areas - After completion and acceptance of all conduit, excavation and backfilling work in a given area, the Contractor will place 6" of screened loam and Grass seed type II in all disturbed areas. 2. Sidewalks and Footpath Crossings - If the proposed trench crosses sidewalks or payed footpaths, the side walk shall be replaced in kind using an 8-inch gravel borrow subbase and a 2- inch bituminous surface or a 4-inch cement concrete sidewalk, as applicable. If part of a walk is disturbed due to a longitudinal trench (less than 30 degrees skew between the sidewalk alignment and the trench direction), the entire width of the sidewalk shall be replaced. If a length of side walk exceeding 100 feet is disturbed, it shall be replaced with similar materials to a width of 8 feet. 3. Roadside Sidewalks - Any disturbed roadside sidewalks shall be replaced for their entire width. 4. Road restoration'- . · After completion and acceptance of conduit excavation, and backfilling of road trench areas, 12 inches of compacted Gravel Borrow Subbase course shall be placed to a level three inches below the finish road grade. A temporary surface of Bituminous Surface Course Type I-I shall be placed. · After allowing 6 months for settlement of the road subbase, the Contractor shall place a sawcut of the pavement 12 inches beyond the limits of the temporary patch. Bituminous binder course shall be placed to within 1-1/2 inches of the finish road grade, and a final course of bituminous Surface Course Type I-I shall complete the road work. Reflectorized pigment pavement markings specially manufactured for roadway use shall be placed to restore any pavement striping which had been in place prior to this contract. C.3.12 Cutting and Patching I. Where it is necessary to do any cutting and patching, no cutting of beading walls, beams, etc., shall be done without the approval of the Engineer. All patching and finishing, etc., shall match the surroundings. All cutting and patching shall be done by workmen skilled in the trades. 2. Holes through concrete and masonry in new and existing structures shall be .cut with a diamond core drill or concrete saw. Pneumatic hammer, impact electric, hand or manual hammer type drills shall not be allowed, except where permitted as required by limited working space. 3. Holes shall be located so as not to affect structural sections. ' 4.. Holes shall be laid out in advance. The Engineer shall be advised, prior to drilling through structural sections, for determination of proper layout. 5. Structural Penetrations: Where conduits, wireways, busduct, and other electrical raceways pass through fire partitions, fire walls or walls and floors, install a firestop that provides an effective barrier against the spread of fire, smoke and cases. Firestop material shall be packed tight, and completely fill clearances between raceways and openings. Firestop material shall conform to the following: IBM Global Services & La Porte ISO Pc..\ 01 September 30,1998 Page 22 orJ2