SEWER SERVICE LINE INSTALLATION - A. Saddles 1. Install saddle wyes at the locations indicated by the Drawings or by the Project Officer. 2. Repair damage caused during the tapping process at no additional cost. 3. Rotate the branch or wye of the saddle no more than 45 degrees from horizontal. B. Risers 1. Construct as shown on the standard details. 2. Extend riser from sanitary wye to an elevation that will allow a service line to be laid at specified grades. 3. Install riser at an angle equal to or less than 45 degrees measured from horizontal. 4. Risers in Rock Trenches a. Install riser pipe in the sewer trench. b. Install riser pipe approximately vertical. 5. Encase the bottom of riser, wye, and 45 degree bend in crushed rock or sand. 6. Extend bedding the full width of the trench as excavated and not less than 18 inches in length from either side of the center of the riser. 7. Place bedding material to a point 12 inches above centerline of the sewer main at the location of the wye. 8. No separate payment will be made for risers...
