Specifications include, but are not limited to: A. This specification covers construction castings made of cast iron and ductile iron. B. Where there is a conflict between this specification and a written exception, such as a detailed purchase order, a purchase specification, or a product specification, the exception shall take precedence over this specification. C. Casting to be installed on pipelines 24-inch and larger shall be 32-inch diameter castings with 30” Clear opening. 2.2 WORKMANSHIP AND FINISH. A. Castings shall be of uniform quality, free from sand holes, gas holes, shrinkage, cracks and other surface defects. Castings shall be ground smooth and well cleaned by shot blasting. Runners, risers, fins, and other cast-on pieces shall be removed. B. A draft angle of 2o to 5o will be accepted provided it does not interfere with the fit of the assembly. C. For traffic service castings, bearing surfaces between manhole rings and covers or grates and frames shall be cast or machined with such precision to prevent rocking. D. Entire ring and cover bearing surface shall be machined. E. In other matters of workmanship and finish, the castings shall conform to any points agreed upon by the manufacturer and the purchaser. 2.3 MANHOLE FRAMES AND COVERS: Frames and covers shall be as indicated or shall be of type suitable for the application, circular, without vent holes. A. Markings: The type of utility shall be stamped or cast into the cover and wording shall be per City Approved Drawings. B. Frames shall be circular. C. The minimum clear opening for frames shall be 24 inches for manholes having a diameter of 4.0 feet. D. The minimum clear opening for frames shall be 30 inches clear opening for manholes having a diameter greater than 4.0 feet and shall be Composite as manufactured by GMI Composites. E. All covers shall have provisions for opening, such as concealed pick holes. F. Special Requirements for Paved Areas