Geodetic Control Network

The Texas Department of Transportation’s Pharr District requested the setting of 150 deep-set control monuments throughout the eight county district area. 5/8” stainless steel rods were driven to refusal (varying in depth from 8 feet to 24 feet). After all monuments were set, GPS static control meeting TxDOT Level I survey requirements was performed and the network adjusted to provide both grid and surface coordinates.