Manual Notice: 2008-1
From: Judy Skeen, P. E., Director, Technology Services Division
Manual: TxDOT Survey Manual
Effective Date: January 01, 2008
Purpose
To communicate changes and additions to TxDOT’s surveying procedures and information, as well as provide general reference for surveying procedures performed by and for the Texas Department of Transportation (TxDOT).
The further intent of this manual is to incorporate changes in technology and the evolution of surveying methodologies and policies at TxDOT. This manual is for use by TxDOT employees and TxDOT contractors and consultants.
Contents
This manual provides information on the use of surveying technology to perform surveys at the state and district level, including small-scale mapping projects.
This manual also incorporates appropriate reference material for surveying as well as the laws, rules and regulations adopted by the Texas Board of Professional Land Surveying (TBPLS) to ensure TxDOT’s compliance with all applicable laws.
Changes
Chapter 2, General Surveying Procedures
- Section 3, Introduction to Surveying, subsection, Survey Review and DTM replaced first sentence for clarification
Chapter 3, Preliminary Surveying
- Section 1, Horizontal Control Surveys, edited information in subsection, Monuments for correction and clarity
- Section 1, Horizontal Control Surveys, corrected, Table 3.1 TSPS Tolerances for Conventional Traverse (Category 7)” title, added “Category 7”
- Section 2, Vertical Control Surveys, edited information in subsection, Monuments for correction and clarity
- Section 2, Vertical Control Surveys, corrected title, Table 3.4 TSPS Table of Tolerances for Conditions (Category 8)”
- Section 4, Photogrammetry - replaced entire section
- Section 5, GPS Surveying -
edited the following subsections for correction and clarity:
- Level 5a Surveys. Also added new level, “Level 5b”
- Level 6 Surveys
- Level 7 Surveys
- Requirements and Specifications
- Equipment and Software
- Datum and Project Control, 7th paragraph
- Section 6, GPS Static Surveying the
following items were changed:
- updated title of Table 3.7, changed from “Planning” to “GPS Static Observation Planning”
- Table 3.12 changed to Table 3.7
- Table 3.13 changed to Table 3.8
- Table 3.14 changed to Table 3.9
- Section 8, Geodetic Surveying, in subsection, Choosing an Appropriate Project CAF removed the first three paragraphs and replaced with new wording
Chapter 4, Design Surveying
- Section 1, Descriptions and Definitions
of Survey Types:
- edited information in subsection, Monuments for correction and clarity
- edited information in subsection, Horizontal Control for correction and clarity
- Section 3, Trigonometric Leveling. Added information to this section
Chapter 5, Right of Way Surveying
- Section 4, ROW Mapping Requirements. Edited subsection, Texas State Plane Coordinate System for correction and clarity
- Section 5, ROW Map Components. Edited subsection, Certification and Monuments for correction and clarity
Appendix C, Monumentation
- added Appendix C, Monumentation explains TxDOT approved monument settings in various soil conditions with examples and figures
Supersedes
This revision of the TxDOT Survey Manual supersedes the last revision, dated January 2006.
Instructions
Users are encouraged to print this manual double-sided from the PDF. To ensure manual currency, check the publishing date of printed manuals against the manual found on the General Services Division Online Manuals System website.
Contact
Please address your comments, concerns, or questions regarding this manual’s information policies, guidelines, procedures, and practices to the TxDOT Standing Committee on Surveying (SCOS).
Archives
Past manual notices are available from a pdf archive.