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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

Support and maintenance is included with all subscription licences for their full duration.

Annual maintenance contracts are available for software under a perpetual licence, prices are based on a percentage of the most recent list price.

This service includes:

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

Innovative Deep Basement Design in Cavan, Ireland

Software Used on this Project

Project Overview

Supporting a deep excavation adjacent to existing buildings and with limited working space is always a challenge. In Cavan, Ireland an innovative method of using raked buttress piles to support a 3-storey basement excavation has been successfully used for a large multi-storey retail development, designed with the help of Oasys software.

A deep basement ranging in height from one to three storeys was required for the development’s underground parking and storage. The site is located adjacent to a hotel, offices, industrial buildings and a national road. Options for supporting the walls of the excavation during construction were limited as owners of the neighbouring buildings opposed the use of tie-backs, lack of working space prevented the use of temporary props and the set-back between the wall and site boundary was minimal.

How Oasys proved invaluable

The team of designers and engineers from Parsons Brinkerhoff (Ireland) Limited and Alan Traynor Consulting Engineers designed an alternative solution to overcome the space shortage. A contiguous wall of 600mm diameter piles varying in lengths from 9-17m was constructed around the site by the contractor Quinn Piling. In the one-storey section of basement the piles were left as cantilevers. In the two and three-storey sections 600mm diameter buttressing piles were installed at an angle of 10° every 2m behind the pile wall. Excavation was carried out in two stages – firstly to 1m to allow construction of a reinforced concrete capping beam and then to formation level followed by construction of permanent the floor slab.

Oasys programs were used throughout the wall design. The overall stability of the contiguous pile wall was analysed with Oasys Frew. The program calculated that the pile length in the two-storey section was required to be approximately 12m with a retained height of 7.5m.

Oasys Frew was used for the serviceability analysis of the contiguous wall. Data was entered into the model in six stages:

  1. Initial conditions
  2. Installation of pile wall
  3. Installation of buttress piles
  4. Excavation to 1m and constructing pile cap
  5. Complete excavation
  6. Construction of floor slabs and permanent walls.

Conservative values were used for earth pressures and the drainage behaviour of Irish glacial till. Frew predicted a maximum lateral deflection of 17mm in the cantilever single basement section, 13mm in the buttressed double level basement and a service load on the buttress piles of 505kN/m.

Oasys AdSec was used in the steel reinforcement design for the contiguous pile wall. The reinforcement was designed to resist the bending moments and shear forces estimated by the Oasys Frew analysis.

Monitoring of the wall for movement was carried out over a period of five months. The maximum deflection of the cantilever wall was measured as 12mm and the maximum deflection of the buttressed wall was 7mm, both lower than the values predicted by Frew.

The use of raked buttress piles has provided an economical and readily available solution for maintaining the overall wall stability of an excavation within tight space constraints. It has proven an effective method for limiting the wall deflection in a deep excavation.


This case study is based on the paper ‘An innovative use of bored tension piles in embedded retaining wall design and construction’ by Abid O. Adekunte, Van Elle Limited, Pinxton, Nottinghamshire, U.K., an Oasys customer. Abid would like to pass on his gratitude to the management of P.Elliot (Ireland) Limited, who were the main contractors for the project, for unrestricted access to site and monitoring data. The contributions of Quinn Piling Limited, Alan Traynor Consulting Engineers and Parsons Brinckerhoff (Ireland) Limited to the successful completion of the project is also acknowledged.

"I've used Oasys software over the years. I find it very reliable, powerful, consistent and user-friendly. That's why I use the programs on all my Pile design projects."
Abid Adekunte, Chief Design Engineer

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