Project Approach - Potholing & Locating
2
UTILITY LOCATING & POTHOLING A thorough investigation of existing underground utilities with geophysical locating procedures early in the design phase ensures a safer, more efficient process. Utility locating performed before the 30% design phase milestone can greatly reduce unnecessary potholing, last minute design changes, adjustments during construction, traffic control, permit processing, fees, and construction delays. When “pre-locating” a site • the design firm researches and chooses a viable alignment • the design firm conducts records and maps search of all indexes and databases for existing “as-built” information pertaining to utilities • AirX uses information obtained from research and performs utility locating procedures to identify and mark-out utilities as they exist in the field • AirX makes note of changes, inconsistencies or unverified data and pays particular attention to areas that contain dense, poorly mapped or sensitive utilities The survey and mapping of the mark-outs determined by AirX combined with existing data provides the most accurate and complete information on underground utilities affected by the project. Conflicts can then be identified and targeted for potholing. There have been occasions when an entire alignment was changed due to unknown or poorly mapped utilities found by AirX. AirX also provides traffic control and permit processing services. Once conflicts are marked, we can design traffic control and right-of-way plans for submittal to the appropriate agencies. AirX has an in- house traffic control crew that can perform flagging, set-up and breakdown of equipment. AirX Utility Surveyors WBE - SLBE - SB (MICRO) PROJECT APPROACH www.airxus.com
-
Upload
dawn-kanavy -
Category
Documents
-
view
7 -
download
4
Transcript of Project Approach - Potholing & Locating
UTILITY LOCATING & POTHOLING
A thorough investigation of existing underground utilities with geophysical locating procedures early in the design phase ensures a safer, more efficient process. Utility locating performed before the 30% design phase milestone can greatly reduce unnecessary potholing, last minute design changes, adjustments during construction, traffic control, permit processing, fees, and construction delays.
When “pre-locating” a site
• the design firm researches and chooses a viable alignment• the design firm conducts records and maps search of all indexes and databases for existing
“as-built” information pertaining to utilities• AirX uses information obtained from research and performs utility locating procedures to
identify and mark-out utilities as they exist in the field• AirX makes note of changes, inconsistencies or unverified data and pays particular
attention to areas that contain dense, poorly mapped or sensitive utilities
The survey and mapping of the mark-outs determined by AirX combined with existing data provides the most accurate and complete information on underground utilities affected by the project. Conflicts can then be identified and targeted for potholing. There have been occasions when an entire alignment was changed due to unknown or poorly mapped utilities found by AirX.
AirX also provides traffic control and permit processing services. Once conflicts are marked, we can design traffic control and right-of-way plans for submittal to the appropriate agencies. AirX has an in-house traffic control crew that can perform flagging, set-up and breakdown of equipment.
AirX Utility SurveyorsWBE - SLBE - SB (MICRO)
PROJECT APPROACH
www.airxus.com
After permits are secured, AirX pre-marks pothole locations and calls USA (Underground Service Alert) a minimum of 48 hours prior to excavation and in accordance with State laws. We work closely with utility standby personnel. Agency inspectors are notified of pending work and AirX attends any required preconstruction meetings.
Our potholing crews excavate soils using hydro excavation. Hydro excavation uses high-pressured water with a vacuum that safely expose utilities. All soils are vacuumed into a fully-contained holding tank. A standard potholing team consists of 2 to 3 trained professionals, a vacuum unit (skid mount or tow behind) and a support truck.
The pothole typically requires an opening of approximately 14” x 14”, which is minimal and environmentally-friendly compared to traditional methods using a backhoe. Pothole locations can be up to 100’ away from the vacuum unit for those areas with restricted access.
Once a utility has been located, it is identified, measured, photographed and documented. The utility is covered with 8” - 10” of plaster sand with the balance tamped to 95% compaction. AirX uses backfill, asphalt, or concrete as required by city/agency specifications.
The utility alignment, depth and other relevant data are marked out at the pothole site for a survey team to pick up, record and map.
AirX produces a comprehensive report detailing all pertinent information gathered from the site. This data is now ready for use and incorporated into maps, engineering and construction plans.
AirX Utility Surveyors2534 E El Norte Parkway Ste. C Escondido, CA 92027
760-480-23475191 Mayberry Ave. Rancho Cucamonga, CA 91737
www.airxus.com
