hondashadow1100vt
Civil/Environmental
- Dec 30, 2008
- 108
I am a PE currently working on a construction project. The project includes a length of buried drain piping shown on the drawings as being routed straight between two below grade structures. During installation, due to alleged unforeseen conditions, the contractor installed some of the work such that the remaining piping either needs to be installed through a manhole that is needed in order to achieve a turn or a 45-degree buried bend that would be needed for the same reason. The Contractor proposes the 45-degree bend. There is a concern that the bend may accumulate sand and gravel and therefore result in a clogged drain that is difficult to flush out or mechanically clean due to the bend.
In regards to whether or not 45 degree bends are technically permissible, this posting is intended to request insights regarding what: 1. industry standards apply, 2. what typical reference standards apply, 3. what technical requirements govern (e.g., Manning Equation).
Thank you for your thoughtful consideration.
In regards to whether or not 45 degree bends are technically permissible, this posting is intended to request insights regarding what: 1. industry standards apply, 2. what typical reference standards apply, 3. what technical requirements govern (e.g., Manning Equation).
Thank you for your thoughtful consideration.