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SINCE 1991

Trunk sewer inspection services from AquaCoustic

Trunk sewers

Other underwater survey services from AquaCoustic

AquaCoustic Remote Technologies specializes in inspections of underwater structures such as trunk or mainline sewers, hydro dams, reservoirs, ports and bridge abutments using a wide range of technologies to create accurate condition assessments. AquaCoustic principals have over 30 years experience in assessing underwater conditions. Our clients include many major civil engineering firms and municipalities throughout North America.

Sewer survey deliverables

Sewer survey deliverables are defined prior to the survey taking place and may consist of all or some of the deliverables listed below.

Each survey is documented in a report that is provided as a hard copy and includes a DVD/CD-ROM with drawings, tables and any video in digital form. The report includes:

  • Discussion of findings
  • Spreadsheets and databases
  • Photographs
  • Site safety procedures
  • Quality control procedures
  • Daily field reports

Selected sonar profiles

In some instances a specific sonar profile indicates additional information that may be helpful, or shows unexpected anomalies or features.

For this reason selected profiles may be included in the report.

Sonar profile

AutoCAD X,Y and Z data.

The sonar profiles, the motion reference data and payout figures are recorded to our proprietary software. The software is also used for quality control and post processing, and outputs X,Y and Z files suitable for computer rendering.

A DVD/CD-ROM disk with AutoCAD drawings created from these files, and with other specified information, is provided.

XYZ data

Sonar rendered as 3D images.

The sonar profile data can be rendered as a 3D image. This aids visualization and helps illustrate trends that are present in the pipeline. Sonar data rendered as 3D is ideal when used to measure and show:

  • Position of submerged laterals or holes
  • Position and volume of sludge and other buildup
  • Quantity of scour and/or erosion
  • Area and position of damage

Graphic rendering of pipe restrictions.

The sonar data can be graphically rendered to show actual pipe cross-sectional shape, diameter, and the percentage of flow restriction.

Pipeline cross-sectional graphic

Video with sonar picture-in-picture (PIP).

The recorded digital CCTV video image includes the PIP sonar cross-section showing below-waterline conditions. This method is ideal for measuring and investigating:

  • Position of submerged laterals or holes
  • Area and position of damage
  • Area and position of turbulence
The recorded video can be supplied on an external hard drive or DVDs.
Sonar & video data combine to provide accurate condition assessments

WRc/PACP/Your specific coding standard.

The sewer survey is conducted according to the Water Research Centre (WRc plc, Swindon, UK) Sewerage Rehabilitation Manual (4th Ed), or the Pipeline Assessment & Certification Program (PACP), or following specific coding standards provided to us.

All findings are tabulated in Microsoft Access and are supplied as a hard copy or in digital format on DVD/CD.

Coding to Wrc, NAAPI &/or PACP standards

Geographic Information Systems (GIS).

An RTK GPS System/Robotic Total Station can be used to collect geo-referenced data for each manhole.

The following information can be supplied:

  • Photographs, video
  • Data export: ASCII, Shapefile, DXF files
  • Coordinate system conversion: LLA, UTM and State Plane
  • Labeling: labels based on attributes or predefined values
  • Spreadsheet / database
RTK GPS

 

 

All images seen on our website are images taken by our Alpha Sewer Inspection System and post-processed by Aquacoustic Remote Technologies. However, we have noticed that our images are being used on some of our competitors' websites. Thank you!

"Imitation is the sincerest form of flattery."

Charles Caleb Colton, Lacon, volume I, no. 183 (1780 - 1832)
 

 

 
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