Architecture & Engineering Services Ltd
Registration Licence & Disclaimer
For AES Ltd engineering spreadsheets and online applications.
Version 1.0 · for Microsoft Excel · © 2026 J J McCaffrey — all rights reserved
Registration
A spreadsheet may be downloaded and evaluated at no charge for an indefinite period. Commercial use requires a registered licence. Registration returns a full registered copy, personalised to the name you supply (30 characters maximum).
| Licence | Basis | Fee |
|---|---|---|
| Single-user licence | One named user | £50.00 |
| Company multiple-user licence | Per copy installed | £50.00 |
Current per-product pricing is shown in the store; where a product is priced differently there, that price applies. Delivery of a registered copy is by email attachment.
Licence for use and distribution
This spreadsheet is not a public domain program. It is copyrighted by the Author. This software is protected by United Kingdom copyright law and also by international treaty provisions.
The Author grants you a licence to use this software for evaluation purposes for an indefinite period. You may not use, copy, rent, lease, sell, modify, decompile, unprotect, disassemble, otherwise reverse engineer, or transfer this software except as provided in this agreement. Any such unauthorised use shall result in immediate and automatic termination of this licence. All rights not expressly granted here are reserved to the Author.
You may copy and distribute the unregistered version of this spreadsheet, completely unaltered, without further permission. The readme file must accompany copies of the spreadsheet.
The Author is Jason James McCaffrey.
Disclaimer
This software is provided for evaluation only, on an "as is" basis. The Author disclaims all warranties relating to this software, whether expressed or implied, including but not limited to any implied warranties of merchantability or fitness for a particular purpose.
The Author shall not be liable for any indirect, consequential, or incidental damages arising out of the use or inability to use such software, even if the Author has been advised of the possibility of such damages or claims.
The person using the software bears all risk as to the quality and performance of the software. Although every effort has been made to ensure the accuracy of this program, users should verify the results for themselves.
How this differs from engineering services
A licensed spreadsheet or application is a tool. It carries no professional indemnity cover and it is not a design deliverable — the responsibility for checking every result against the governing codes rests with the user.
Insured civil and structural engineering, where AES Ltd takes professional responsibility for the output, is provided separately under an NEC4 Professional Services Contract following a signed appointment, with professional indemnity insurance subject to underwriters' approval. See the store for that route. No appointment exists and no liability is accepted until an appointment is signed.
Versions and contact
Please ensure you have the latest version, which may be downloaded from jjmccaffrey.com/downloads.php. For comments, suggestions, bug reports or information: jjmc@jjmccaffrey.com · +44 (0)7890 278110.