Aerial control points shall meet . All aerial control points shall reference and adjust to nearby primary control points as directed by the TxDOT District Survey Coordinator.

These shall be placed at the direction of a photogrammetrist to meet the precision requirements listed in the Design Surveys chapter of this manual. Aerial Panel Layout, listed in the TxDOT Surveyors’ Toolkit, shall be provided to TxDOT Survey Staff prior to aerial data collection.

Construction of aerial control monuments shall be done with the intent that they survive until the end of aerial data collection. If possible, they shall be in TxDOT Right-of-Way and situated away from likely construction. Construction methods and materials shall match the diagrams and processes outlined in the located in the .