PS&E Development
The Design Concept Conference marks the beginning of Plans, Specifications, and Estimates (PS&E) preparation and occurs after most of the background data is gathered and the preliminary hydrologic/hydraulic analysis and design is complete.
As part of the detailed design process, stream crossing hydrology and hydraulics should be refined and finalized. Refinement is usually needed to reflect detailed field survey data, changes in basic design conditions or assumptions, or to reflect revised methodology if there has been a significant delay between schematic development and PS&E development.
The
requires a bridge scour evaluation during the hydraulic design process for all bridges. The results of a scour evaluation may highlight the need for design adjustments such as increasing the opening size, deepening the foundations, adding pier or abutment protection, or incorporating other mitigation measures. Scour countermeasure design is to be performed or directed and approved by the
of the Bridge Division (BRG).
In addition to bridge hydraulic design and scour evaluations, a number of other H&H tasks are required as a project design is being finalized. These tasks include, but are not limited to:
- Refining the hydraulic design of culverts to finalize sizes, invert profile, end treatment and outlet protection;
- Preparing final storm drain details including design of appropriate sized inlets at the proper spacing and lateral sizing;
- Preparing pump station details for projects involving pump facility construction: and
- Preparing or contributing to the development of (SW3Ps) after the roadway drainage design is completed
Finalized hydraulic calculation sheets and hydraulic reports should be reviewed by the district and then submitted to DES-HYD for review and approval before PS&E submittal.
See the TxDOT Project Development Process Manual, for further discussion of the
.