Utility Surveys BSI PAS 128:2014

Aworth Survey Consultants can provide you with a number of utility surveying services including desktop mapping, drainage surveys, underground services tracing and CCTV drainage surveys.

Using our desktop mapping service, we can collate all the utility companies’ statutory records local to your site, and supply these as additional layers of information within a topographical survey.

A survey on existing site drainage can be undertaken to confirm connectivity, cover level and inverts. Drainage pipe flow, sizes and type are recorded and added to the topographical survey.

Underground services tracing using Radiodetection and Ground Penetrating Radar (GPR) methods can be provided to locate all underground utility services.

Aworth Survey Consultants can facilitate CCTV drainage surveys, using sophisticated CCTV survey equipment and published on DVD, together with a full technical survey report.

We deliver BSI PAS 128:2014 compliant underground utility surveys - category types A-D based upon your specifications and requirements.

The BSI PAS 128:2014 standard provides a robust methodology for delivering utility surveys in the UK, and focuses on levels of accuracy – referred to as Survey Category Types – that you can specify when requiring a PAS 128 compliant underground utility survey.

Your project will benefit from a utility survey by having accurate data at the design and planning stage, resulting in minimised unnecessary excavation, reduced risk of damage to buried apparatus and improved work safety.

Topographical Surveys

Architects, Designers, Engineers, Local Authorities and Town Planners require far more than just a survey drawing. Aworth Survey Consultants provide the complete topographical survey service, tailored to our specific clients’ requirements and delivered to the highest standard of drafting.

Topographic data is prepared from ground survey observations for a variety of end users. Terrain models, contours and infrastructure are mapped to precise accuracy and scale, providing topographical 2D and 3D data, wire frame models and digital ground models for all types of projects, BIM modelling, road schemes, commercial, residential and industrial developments, pipelines and flood prevention studies.

Our standard topographical specification is fully comprehensive and in accordance with RICS professional guidance, global: Measured Surveys of Land, Buildings and Utilities, 3rd edition but we understand no two projects have the same survey brief.

Additional requirements, such as contours, drainage, underground services, road markings, precise GPS observations, site elevations and sections can all be accommodated.

All our topographical surveys are undertaken using our field survey teams, equipped with the latest Leica Total Stations, Leica GPS and associated surveying equipment. Dedicated field survey teams are accredited to undertake surveying on London Underground and Network Rail, as well as confined space environments.

Our dedicated in-house CAD department are fully trained and equipped with the latest processing, AutoCAD and PDS software to provide the highest standard of drafting.

Rectified Photography

Rectified photography can provide an extra level of detail to a survey, especially on heritage projects where detail such as ceilings, irregular stonework, mosaic floors, stained glass windows or building façades may need to be recorded.

The cost of producing rectified photography is relatively low compared to other aspects of building conservation work and can provide a to scale, distortion free photographic record (upon the rectified plane) which can be referenced and integrated with the linework CAD drawings.

This specialised digital photography service is incredibly effective on mosaic floors and stained-glass windows prior to renovation, where a colour record gives accurately recorded shapes a further dimension.

A detailed rectified photography record of brick, stone or mathematical tiles of building façades, walls or structure elements can provide the whole conservation and design team with accurate information to assess, programme and cost for restoration repairs.

Aworth Survey Consultants understand the special considerations and techniques required to undertake historic building surveys compliant with English Heritage specification guidelines and to meet your detailed requirements. Our vast experience in this field has allowed us to work on many fine period and listed properties including; barns, castles, churches, priories, mansions, and university buildings.

Rail Infrastructure

Aworth Survey Consultants have extensive experience of working on Network Rail, London Underground and Docklands Light Railway by dedicated staff trained with all the necessary Network Rail PTS and LUL Track Accustomed permits.

We are Railway Industry Supplier Qualification Scheme (RISQS) accredited with a 5-star maturity rating. RISQS supports the main infrastructure contractors including Network Rail and Transport for London in the management of supply chain risk.

From existing level crossings, track and tunnels that need measuring to a high degree of accuracy, to station buildings that are to be measured to facilitate new ticket barriers and lift installations, Aworth Survey Consultants produce fully detailed plans and profiles of the site, the equipment, plant and track.

Major projects include the measured building surveys and structure surveys for the Network Rail £5.5bn Thameslink Programme at Borough and London Bridge, the existing Charing Cross Station and Stratford Station for the 2012 Olympic Games.

Aworth undertook a major maintenance lighting project at Liverpool Street Station which is undergoing redevelopment to increase capacity, improve accessibility and upgrade interchanges as part of the building of Crossrail.

In addition to physical surveys, Aworth has developed civil asset management databases and mapping for the metro modernisation investment for London Underground (formerly Metronet), to ensure maintenance inspections of civil assets can be identified and located correctly.

Monitoring Surveys

Our expertise in deformation or movement monitoring is extensive, with past projects including maritime heritage ship The Cutty Sark, loading towers at Tilbury Docks, Network Rail civil assets and structures and refurbishment/construction projects whilst under redevelopment including One Crown Place, London.

With buildings and structures on or near construction sites or excavation works susceptible to settlement or excess movement, deformation surveys measure the rate of this displacement.

Detailed measurements of civil and mechanical structures can be provided using high-order instrumentation and advanced surveying techniques to achieve ultra-precise measurement tolerances.

Monitoring results can be presented in spreadsheet form with graphic charts to easily demonstrate if any movement or deformation has occurred.

In addition to our standard output using fixed targets, we can also produce vertical contouring of elevational façades to identify any deformation.

This presentation of results is extremely useful to monitor progress of demolition works or to confirm precise vertical tolerances for new steel frames.

All our monitoring surveys are undertaken by our dedicated field survey teams, equipped with the latest Leica Total Stations and associated surveying equipment.

Dedicated field survey teams are accredited to undertake surveying on London Underground and Network Rail, as well as National Grid installations and confined space environments.

Lettable Area Calculations

Area calculations may be required for valuation, management, conveyancing, planning, taxation, sale, letting or acquisition purposes.

We are fully conversant with the latest RICS Property Measurement, 2nd edition requirements and can advise you on all elements of the latest International Property Measurement Standards IPMS: Office Buildings (Parts 1, 2 and 3), IPMS: Residential Buildings (Parts 1, 2 and 3, 3a ,3b, and 3c) and the RICS Code of Measuring Practice, 6th edition.

Whether you require Code of Measuring Practice: GEA, GIA or NIA or the IPMS equivalent: Parts 1, 2 or 3, we can provide comprehensive scale drawings detailing the demise and area calculations to comply with the required standard.

Our services are often used by large corporate companies wanting to calculate areas for departmental demise reviews,shop unit calculations at retail centres and as-built office demises for handovers.

We pride ourselves in providing lettable area surveys on clear accurate floor plans showing the precise NIA, GIA or GEA demise areas. We annotate all deductions, together with a comprehensive schedule of the area calculations.

Gross External Area (GEA) is the area of building measured externally at each level and is primarily used for planning applications or for rating and insurance purposes to residential properties. IPMS 1: Offices/Residential (IPMS 3A) equates closely to the former GEA.

Gross Internal Area (GIA) is the area of a building measured to the internal face of the perimeter walls at each floor level. It is primarily used for calculating building costs, and for rating and service charge apportionment in the commercial sector. IPMS 2: Offices/Residential (IPMS 3B) equates closely to the former GIA.

Net Internal Area (NIA) is the usable area within a building measured to the internal face of the perimeter walls at each floor level, with specific exclusions. It is primarily used as the basis of measurement for valuation, marketing and property rating. IPMS 3: Offices/Residential equates closely to the former NIA.

Legal Mapping

Aworth Survey Consultants have considerable experience in providing professional, impartial advice and assistance on boundary demarcation matters and Land Registry titles.

Whether there is a dispute or uncertainty on hedge boundaries or a new fence position, extent of land ownership, rights of way or rights of access, an early appointment by individuals, or with intermediaries, such as a solicitor, property developer or land agent, can assist in bringing about a speedier and more costeffective resolution to the issue.

The independent advice and assistance of professional land surveyors can be invaluable in providing impartial survey reports identifying the difference between the physical boundaries and the legal boundaries that exist in deeds and land registry documents.

If required, Aworth Survey Consultants can provide expert witness reports in accordance with CPR Part 35 to assist in mediation or litigation processes, to aid in the resolution of boundary disputes.

For new boundaries we can produce suitable plans and any necessary fieldwork to aid your application to Land Registry to register new property and titles.

Aworth have a wealth of experience and knowledge in mapping and compiling complex Land Registry titles.

This service is especially valuable with projects that have a multitude of Land Registry titles.

We can produce clear and precise defined Land Registry compliant drawings showing individual freeholds, leaseholds, underleases and compiled masterplans.

As an official supplier of Ordnance Survey maps and digital data, we can also provide Ordnance Survey data direct, if required.

Laser Scanning

Architects, designers and engineers can require far more than just a 2D survey drawing to fulfil their building’s Lifecycle Management. Aworth Survey Consultants can provide the complete BIM compliant survey service, tailored to our specific clients’ requirements.

If you need to take your project beyond AutoCAD 2D plans and drawings, Aworth Survey Consultants can provide data from 3D Laser Scanning and supply 3D point cloud data and Autodesk Revit modelling outputs to take your refurbishment, redevelopment or conservation project to the next level.

3D Laser Scanning is revolutionising digital data capture for 3D use. Across all industries 3D is becoming more common for design, presentation and engineering. Laser Scanning allows the real world environment to all be captured in 3D exactly as it is.

The scanning process creates a point cloud made up of millions of dimensionally accurate 3D points. Colour in the form of an RGB value is also captured.

The point cloud can then be reconstructed to give it a surface and rendered with colour or images added to give a realistic texture to the 3D model. In addition, fly-through models can also be produced.

You can view, measure or mark-up rich, laser scan point clouds with the free Leica TruView local viewer, Autodesk ReCAP or in the Revit or AutoCAD environments.

Aworth Survey Consultants can provide Autodesk Revit modelling to take your refurbishment, redevelopment or conservation project to the next level. If you are working towards a Level 2 BIM workflow a Revit model is a good start to a refurbishment or alteration project.

Aworth use the same core values to build accurate Revit models from pointcloud, total station data and hand measurement. We can also convert existing 2D AutoCAD projects into Revit.


Measured Building Surveys

Aworth Survey Consultants measure buildings for refurbishment, redevelopment, conservation projects or property portfolios using the latest electronic survey instrumentation and meticulous hand measurement. 

The above methods allow our surveyors to produce survey drawings using site dimensions maintaining 1:1 accuracy and precise correlation between drawings in 2D AutoCAD or 3D Revit for BIM modelling.

Our standard measured building surveys are carried out in accordance with the RICS professional guidance, global: Measured Surveys of Land, Buildings and Utilities, 3rd edition.

Comprehensive measured plans define all walls, beams, stairs, columns, lifts, service entry points, kitchen and sanitary fittings, windows and doors.

Vertical information is produced for all floor levels, floor to ceiling heights, beam heights, window heights and roof levels.

Additional requirements such as lighting, service outlets, ducting, radiators and sprinkler systems can also be included.

In addition to providing measured floor plans tailored to our clients’ specific requirements, and delivered to the highest standard of drafting, we can provide reflected ceiling plans, roof plans, elevations and sections.

Whether you require RICS professional guidance, UK: Rights of Light, 2nd edition compliant elevations, standard detailed elevations or highly detailed elevations compliant with English Heritage guidelines we can provide these to meet your detailed requirements.

We can provide basic cross sections through a site, standard building sections cut through your building or highly detailed elevational sections. 

Elevations and sections are prepared with reference to measured plan data to ensure accuracy and completeness.

Aworth Survey Consultants understand the special considerations and techniques required to undertake historic building surveys compliant with English Heritage specification guidelines and to meet your detailed requirements. Our experience in this field has allowed us to work on many fine period and listed properties including; barns, castles, churches, priories, mansions, and university buildings. 

BIM & Revit Modelling

Aworth have been producing BIM models for over thirty years, beginning with land surveys developed in PDS for BIM Infrastructure Design.

Today, BIM (Building Information Modelling) is an intelligent 3D model-based process that gives architecture, engineering, and construction (AEC) professionals the insight and tools to more efficiently plan, design, construct and manage buildings and infrastructure.

Aworth Survey Consultants can provide Autodesk Revit modelling to take your refurbishment, redevelopment or conservation project to the next level. If you are working towards a Level 2 BIM workflow, a Revit model is a good start to a refurbishment or alteration project, and we can supplement the model with 3D point cloud data produced from a 3D Laser Scanner.

Revit and its powerful tools let you use the intelligent model-based process to progress from conceptual design to construction documentation within a single software environment. Optimise building performance and evaluate how well they conform to building and safety regulations. Revit supports a multi-discipline design process for collaborative design.

Aworth use the same core values to build accurate Revit models from pointcloud, Total Station data and hand measurement. We can also convert existing 2D AutoCAD projects into Revit.

All Aworth models contain custom Revit 'families' to accurately show existing building elements.

Aworth Survey Consultants can provide the complete BIM compliant survey service, tailored to our specific clients’ requirements and fulfil their Building’s Lifecycle Management and BSI standards for Building Information Modelling BS EN ISO 19650-1 and BS EN ISO19650-2.