Changes

'''As-built Survey'''<br>

'''As-built Survey'''<br>

Throughout the construction process, it is sometimes necessary to deviate from the intended design of LID features and adapt the design to on-site conditions. The completion of a post-construction as-built survey is a standard operating procedure for engineering projects that captures and changes that were made to the feature’s design during construction.

Throughout the construction process, it is sometimes necessary to deviate from the intended design of LID features and adapt the design to on-site conditions. The completion of a post-construction as-built survey is a standard operating procedure for engineering projects that captures and changes that were made to the feature’s design during construction.

Survey Steps:

Survey Steps:

*If a pre-engineering survey is not available, use a reference feature as the datum

*If a pre-engineering survey is not available, use a reference feature as the datum

*Include data on critical feature elevations and existing utilities, such as:

*Include data on critical feature elevations and existing utilities, such as:

*Inverts of newly installed pipe

**Inverts of newly installed pipe

*Vertical and horizontal bends in pipes

**Vertical and horizontal bends in pipes

*Existing public utilities

**Existing public utilities

*Existing private utilities

**Existing private utilities

*New and existing structures (e.g. catchbasins, manholes, chambers, etc.)

**New and existing structures (e.g. catchbasins, manholes, chambers, etc.)

*Identify the type, diameter, and material of exposed utilities

*Identify the type, diameter, and material of exposed utilities

Inspection Points:

Inspection Points:

*Datum matches the pre-engineering survey or selected reference feature

*Datum matches the pre-engineering survey or selected reference feature

*Data provided is as-built survey matches the as-built standards of the City

*Data provided in as-built survey matches the as-built standards of the City

===Address Deficiencies and Assumption Protocols (JC)===

===Address Deficiencies and Assumption Protocols (JC)===