Underground Services Survey

To carry out a PAS:128 compliant utility (buried services) survey and present all relevant information.

* Survey will be combined with our topographical Survey for context.

If records are not already available for this site, then we recommend that you instruct us to carry out a Desktop Utility Search. This is a requirement to meet PAS:128

Underground Services Survey Specification

SolidPoint can purchase statutory or private source utility information as part of its detection service, at extra cost. Our Engineers do not record this information in a utility survey unless otherwise noted. Statutory plans should be consulted to supplement this survey.

Vertical position (depth) is indicative to the top of the utility feature and is recorded as DTS (depth to top of service) and should not be taken as exact. Where depth information from the technology is unclear, depth is not shown. Horizontal position is indicative to the centre of the utility feature and should not be taken as exact.

Sewer and manhole details shown on this drawing have been obtained by observation and measurement from the surface and as such cannot be guaranteed. Where precise sewer details will be critical to the project design Our Engineers can use a sond to trace the pipe line. If entry into the chambers is necessary, a specialist team appropriately qualified for confined space entry would be needed at extra cost.

Where logic dictates that a utility exists, but which cannot be positively confirmed with the technology, an assumed route (ASR) is recorded.

Utilities may continue outside of the survey area. Any paint marks outside of the area are for investigative purposes only and may not represent the full extent of the sub-surface utilities.

Permanent paints are used to mark-out the position of the utilities. Despite the name, these paint markings may become illegible depending on ground, weather and traffic conditions. No guarantee is given in respect of the durability of the paint markings and that they are a complete representation of the sub-surface utilities therefore this drawing should be used as the primary reference for the survey results.

Our survey drawing will not provide an absolute representation of the sub-surface. Utilities have been detected using non-invasive technologies only and the performance can be adversely affected by ground, weather and site conditions outside of our control therefore some utilities may be undetectable. While our engineers use reasonable endeavours to detect all utilities it does not guarantee that 100% detection will be achieved.

Irrespective of the information provided by a utility survey and statutory plans, excavation work should be undertaken with extreme caution and in accordance with HSE Guidelines - HSG47 Avoiding Danger from Underground Services.

General Notes for Underground Utility Surveys

We will at all times use our best endeavour to locate all services using the latest technology and fully trained and experienced staff. It is normal industry practice to only locate declared services however we will always try to exceed this standard but for technical reasons cannot guarantee to do so.

Services we include in our survey:

Metallic gas mains of 38mm diameter and greater

Metallic water mains of 38mm diameter and greater

Electricity supply cables of 440v to 66Kv that are live

Electric cables to street lighting

Drainage runs of 100mm diameter or greater where access to the pipe is possible

Telephone, communications and computer cables

Metallic fuel lines

Empty ducts of 100mm or greater

Underground heating pipes

Metallic pumping mains

Other metallic services that are capable of transmitting a signal.

Depths of all services where possible

Services we exclude from our survey:

Non-Metallic gas mains of 38mm diameter and smaller

Non-Metallic water mains of 38mm diameter and smaller

Disused services

Pot ended cables

Tracing drains or ducts where there is no access for our drain sonde

Service connections (unless specifically requested and access is arranged to properties)

Man entry into confined spaces unless specifically requested

CCTV condition surveys (this can be quoted for separately)

Manhole covers that we cannot lift after 20 minutes levering with hand tools

Working in areas that are either unsafe or not practical to work in

Internal services (unless requested)

Ground Penetrating Radar

Ground Penetrating Radar equipment is a geophysical method that uses radar pulses to build up an image of the subsurface. Standard electromagnetic techniques are generally used to locate metallic pipe work and cables. However this equipment is only able to locate services made of conductive materials and ineffective for locating plastic or concrete pipe work. We use ground penetrating radar on all sites to look for non-conductive services, wherever possible. This equipment will always be used to complement existing locating techniques. It may be possible to locate the items below with Ground Penetrating Radar; however, due to equipment limitations and certain ground conditions, it is impossible to guarantee the location of these items.

Items that may be locatable with ground penetrating radar:

● Plastic gas mains ● Plastic water mains ● Underground storage tanks ● Voids ● Empty ducts ● Non-metallic pump mains

Desktop Utility Search

If records are not already available for this site, then we recommend that you instruct us to carry out a Desktop Utility search. Please note that utility providers may take up to 15 working days to forward their records to us. Our survey drawing will not provide an absolute representation of the sub-surface. Utilities have been detected using non-invasive technologies only and the performance can be adversely affected by ground, weather and site conditions outside of our control therefore some utilities may be undetectable. Irrespective of the information provided by a utility survey and statutory plans, excavation work should be undertaken with extreme caution and in accordance with HSE Guidelines - HSG47 Avoiding Danger from Underground Services

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