Drainage records are often incomplete, out of date or simply wrong. LN Transport’s experienced survey teams undertake detailed GIS location, structural and service condition surveying of manholes to give owners, developers and utilities an accurate picture of what is actually in the ground.
Using the latest GPS surveying equipment we gather, manage and present the data in a cost-effective manner, providing detailed information and layouts of your network that can be used for planning, maintenance and design.
What is included
- GIS and GPS location of manhole covers, inverts and connections
- Structural condition assessment of chambers, benching and covers
- Service condition: infiltration, silt levels, flow and blockages
- Network layouts and schematics for your records
- Investigation of excess infiltration and repeat blockages
- Combined manhole and CCTV surveys for complete network records
When you need one
Manhole surveys are typically required when drainage system records are poor or missing, ahead of adoption or sale, when planning a development on an existing network, or when operational issues such as excess water infiltration or blockages containing manhole materials suggest chambers are deteriorating.
Data you can use
We deliver locations, levels, dimensions and condition grades along with photographs and drawn layouts, in a format that works with your GIS or asset-management system. Combined with our CCTV pipeline surveys, that gives a complete record of the network from cover to cover.
Frequently asked questions
Can you survey live sewers?
Yes. Our teams are equipped and trained for working on live foul and surface water networks with the appropriate precautions and traffic management.
What format is the data delivered in?
Reports, photographs and drawings as standard, with data exports to suit your GIS or asset system on request.