2008-213 (5) - Laserfiche WebLink

Home Browse Search

E. A sieve analysis of Foundation Rock shall conform to the following limits: Passing 3/4" - 100% Passing 3/8" - 20 - 55% Passing #4 - 0 - 10% Passing #8 - 0 - 5% Buried Trace Wire All mainlines, fittings and appurtenances installed underground shall have #10 gauge, type THHN stranded copper trace wire attached for locating purposes. Trace wire shall have a brown colored sheath for wastewater force mains. 3. EXECUTION OF WORK The installation and testing of the mainlines shall be done in accordance with AWWA (ANSI) C600, plus the additional requirements described herein or as shown on the Plans. A. Preparation 1) Clearing - The Contractor shall perform all clearing necessary, where applicable, for the proper installation of all mainlines and appurtenances in the locations shown on the drawings. Plantings, ornamental shrubbery, protected trees, utility poles or structures subject to damage resulting from the excavation shall be transplanted, relocated, braced, shored or otherwise protected and preserved unless otherwise directed by the Engineer. Protected trees shall be considered as all trees outside five (5) feet either side of the mainline to be installed. Only under special circumstances with Engineer's written approval may trees outside these limits be considered for removal. All debris generated from the clearing process shall be disposed of by the Contractor at a disposal site approved by the Engineer. B. Trenching 1) Pavement Cutting - Asphaltic pavements shall be cut by pneumatic hammers or mechanical pavement cutters; saws, or other method approved by the Engineer. Concrete pavement or concrete base pavement shall be sawed. Both types of pavement shall be cut and removed prior to any excavation. 2) Excavation - The excavation in which the pipes and appurtenances are to be constructed shall be excavated in open cut, except where otherwise stated on the Plans, in such a manner to such depths and widths as will give suitable room for bracing, supporting, pumping, draining and for removing from the excavation any material which the Engineer may decide is inadequate for foundation. The maximum trench width at the top of the pipe shall be in accordance with the trenchingdetails. The Contractor may, where it will not interfere with the work or adjacent structures or property, slope the sides of excavation. The sides of the trench may only be sloped from a point in compliance with the trenching details. No compensation will be allowed for such excavation and the Contractor shall include its cost in the prices bid. The materials of excavation shall include all materials encountered, such as clay, sand, rock, marl, muck, gravel, boulders, heterogeneous fill materials, old timbers, or any combination of these. Any unforeseen obstacles such as buried trees or timbers, 02534- Sanitary Sewer Force Mains 02534 = 4