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Terms & Conditions


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Privacy and Cookies

Data Security

Website Terms and Conditions

Software Licensing Terms

Privacy and Cookies

We may change this privacy notice from time to time by updating this page.

What information do we collect?

When you use this website, we may collect the following information:

  • the areas of the website that you visit
  • information about your computer, such as which browser you are using, your network location, the type of connection you are using (e.g. broadband, ADSL etc) and your IP address

We do this by using cookies, which are small files that help us track how our visitors use the website and enable us to understand where we can improve your experience. If you would like to find out which cookies we use and the information they track see our Cookies Policy.

Once you submit or register information through our website we will know who you are and your activities on this website and information about you and/or your company may be recorded on our systems. For example, we may ask for personal information when you download our software including:

  • your name
  • company name
  • email address
  • postal address
  • telephone number
  • country where you are based
  • Social media ID
  • your comments/questions
  • services/markets you are interested in

We may also collect personal information from telephone calls and/or other correspondence with you.

What do we do with the information we collect?

The information we capture is used for various purposes. The main purpose is to provide you with our services (whether available via the website or offline). We also use the information for:

  • website development
  • understanding how our visitors interact on the website
  • understanding what our clients are interested in
  • understanding what potential clients are interested in
  • dealing with enquiries/concerns
  • marketing our services and people to you
  • market research
  • service development
  • internal record keeping


We would like to provide you with information about our services and other information which we think you may find interesting. We may send you such information by post, email and/or telephone, unless you have asked us not to do so.

We will not provide your personal information to other organisations for marketing purposes without your explicit consent.

If at any time you do not want your information used for direct marketing purposes, please contact us or follow the unsubscribe link in our marketing email messages.

Who do we share this information with?

We may share your personal information with companies acting on our behalf who will only use the information to provide that service. However, we will retain control of your data and any third party service provider that we use must act in accordance with our instructions. We may also share your personal information with a purchaser or potential purchaser of our business.

In some circumstances, we may have to disclose your personal information by law, because a court or the police or other law enforcement agency has asked us for it.

How to get copies of or amend the information we have collected

You may request details of the personal information that we hold about you under data protection laws. If you would like a copy of the information held about you please write to us at oasys@arup.com or at: Data Protection Officer, 13 Fitzroy Street, London, UK, W1T 4BQ. Please note that we may charge a small £10 administration fee for information requests.

If you think any information we have about you is incorrect or incomplete, please email us as soon as possible. We will correct or update any information as soon as we can.

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Data Security

We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect, including locked cabinets, electronic password protection and pass card access to buildings.

If at any point you suspect or receive a suspicious communication from someone suggesting they work for Oasys or a website claiming to be affiliated with Oasys, please forward the communication to us or report the incident by email to oasys@arup.com or in writing to Oasys, 13 Fitzroy Street, London, UK, W1T 4BQ as soon as possible.

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Website Terms and Conditions

The contents of this web site are protected by copyright and other intellectual property rights under international conventions. No copying of any words, images, graphic representations or other information contained in this web site is permitted without the prior written permission of the webmaster for this site.

Oasys accepts no responsibility for the content of any external site that links to or from this site.

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Software Licensing Terms

Terms and Conditions of Purchase

The full conditions of purchase and maintenance for all Oasys software are set out in the Oasys Software Licence and Support Agreement. All prices are subject to TAX at the current rate.

Prices and specifications are subject to change without notice – please ask for a written quotation.

Although every care has been taken to ensure the accuracy of all information contained herein, the contents do not form or constitute a representation, warranty, or part of any contract.

Superseded Versions of Terms and Conditions

Oasys keeps copies of all superseded versions of its terms and conditions.

Maintenance & Support Services

Twelve months support and maintenance is included with most products. Thereafter maintenance is typically 20% of the current sales price.

An annual maintenance service is available for most programs after the first year.

This service includes:

  • telephone/fax/email/web based support
  • free software updates available via internet download
  • personalised output header for many products

Settlement calculation and utility impact assessment

Software Used on this Project

Project Overview

The Arup design team assessed the impact on utilities due to ground movements from a major infrastructure project. Their innovative solution showed the synergy that can be created by combining Oasys Xdisp and Pdisp for a comprehensive analysis of major projects.

A semi-automatic process was achieved using Feature Manipulation Engine (FME) software by Safe to save processing time. This automatic procedure reduced human error when dealing with a large number of assets. This also provided a tool to simplify iterative analysis – saving time and money.

How Oasys proved invaluable

The stakeholders for this project included the various utilities providers, each with unique criteria and a variety of asset dimensions to be assessed. Ground movements generated by three phases of works (demolition of buildings, installation of temporary and permanent retaining walls, excavation behind the walls and for tunnelling) were calculated using a combination of Oasys Pdisp and Xdisp. Displacements were calculated for each phase and imported into the analysis for the subsequent phase, for the utility assessment to be undertaken.

Xdisp excavation detail model

More than 600 assets were identified to be within the zone of influence of the works and potentially at risk of being impacted. Asset information provided in Geographic Information System (GIS) format included the position of the asset (geo-referenced), type of asset (jointed or continuous), dimension and type of material in order to identify the limiting criteria to be applied. Using Safe’s FME software, potential failure modes were identified and the data was processed to obtain compatible inputs for Oasys Pdisp and Xdisp.

Pdisp Model

The results of each phase were post-processed and different graphs along the asset chainage were produced to show axial and flexural strains, combined tensile and compressive strains, and the displacements along and perpendicular to the line of the utility. The results were mapped back into the GIS files in order to generate drawings to depict the results of the assessment.

Settlement Results in Xdisp

The Oasys Xdisp model of the proposed works included polygonal and circular excavations with several ground movement curves (installation and excavation effects) and tunnels with varying volume losses. The Xdisp models were used in combination with the Oasys Pdisp soil displacement model (for the demolition stage of the project) to calculate displacements for the lines originally provided in GIS.

Extensive displacement grids were also used in Pdisp and Xdisp to obtain vertical ground movement contours for each of the phases.

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