Project Description
The purpose of the project is to prepare a design and contract documents for replacing existing pile bents supporting sanitary sewer force mains, gravity line, and laterals over streams or ravines at several locations on the Newport News Sanitary Sewer collection system. The length of the lines varies, but typically the length is less than 100 feet. These are typically wooden pile bents that have deteriorated to a point where failure is eminent. The existing wooden piles are shallow, and in some cases are 4 inch or 6 inch treated lumber. The load supported is minimal, since it only consists of the pipe. However, in those areas where streams are being crossed, the piles may have some load as a result of flooding and debris being caught up on the pipe or bends. Replacement pipe should be ductile iron. Depending on the site, some method of protection for the pipe may be necessary such as steel I or H beam between the bends. New piles will be concrete or steel depending on the location and environment. In some cases, a fiberglass pile may be acceptable. Most sites are remote and are stream crossing without easy access. The City has easements on the sites, but additional construction or access easements may be necessary. Permits need to be evaluated and obtained as necessary. It is expected some survey will be required, and geotechnical data needs to be evaluated.
Project Manager
Laura Harrell
757-926-8668
keeld@nnva.gov
Inspector