Do you already have architectural drawings?

This shop is currently being tested, with an April 2024 soft launch. For a limited time, you can add the code TRIAL10 to get a 10% discount on your order (valid until 30-04-2024). You may be contacted about our service and how we can improve it.

In this service, the normal Calcs-Online service does not apply, as we have streamlined the offering to get the price as low as possible while maintaining quality. This is a “Build Your Own” process. Please disregard other marketing material as this is a new launch. 

Choose products

Get an instant quote through our "Build Your Own" process


Upload your drawings, if applicable

Order verification

We will verify your order usually within 1 working day


We produce your calculations

After purchase, we will check you have purchased the correct project. We will then then advise on project timescales and start work on your engineering. In the event you purchase products that are not suitable for your project, we will contact you to rectify this through our shop. We offer no quibbles refunds if this is requested before engineering work commences.

If you already have drawings, or do not need them, you can use our shop to purchase the calculations you need. At the checkout you will be asked to upload your drawings. If you don’t have architectural drawings yet, and require them, don’t worry: We can help. Simply complete the form and we will put you in touch with some of the great architects we work with in your local area.

0208 183 4321 |

PorthouseDean Limited (trading as Calcs-Online)
Registered at Companies House in England. Company No: 08086677
VAT Registration Number 162 3045 40

Calcs Online Brought to you by PorthouseDean Structural Engineers