The Papers · Terms of Service

Terms of Service.

The agreement between you and the house — written to be read, not skimmed. Plain where it matters, and short where it can be.

Provider
Aphelion Engineering Pty Ltd · Perth, WA
Registry
ACN 697 870 812 · ABN 19 697 870 812
Effective
5 July 2026 · first edition
§ 01 · The parties

Who we are, and what this covers

Ampacities (ampacities.com — the website, the calculators, the practice platform, and the reports they produce, together the Service) is operated by Aphelion Engineering Pty Ltd (ACN 697 870 812, ABN 19 697 870 812) of Perth, Western Australia (we, us). These terms are an agreement between us and you — the person or business using the Service.

By creating an account, or by using the Service, you accept these terms and our Privacy Policy. If you are using the Service for an employer or company, you confirm you have authority to accept on its behalf.

§ 02 · Accounts & the practice

Your account

You must give accurate details when you sign up and keep them current. You are responsible for what happens under your account — keep your password to yourself and tell us promptly at [email protected] if you believe it has been compromised. For security, each account holds one active session at a time.

Accounts belong to a practice — your workspace. A practice owner or admin who invites team members is responsible for those members' use of the Service and for choosing appropriate roles for them.

§ 03 · The trial

The 14-day free trial

New practices receive a 14-day free trial — no payment card required. If you have not subscribed when the trial ends, access to paid features ends; your data remains stored under these terms and the Privacy Policy so you can subscribe later or ask us to remove it.

§ 04 · Plans, fees & GST

Subscriptions and billing

Paid plans, seats and prices are stated on the pricing section at the time you subscribe. Prices are in Australian dollars; where GST applies it is stated at checkout. Payments are processed by Stripe — your card details go to Stripe directly and never touch our servers.

Subscriptions renew automatically at the end of each billing period until cancelled. If we change a price, we will give you at least 30 days' notice before it affects you; the change applies from your next billing period after the notice.

§ 05 · Cancellation & refunds

Cancelling, and your refund rights

You can cancel at any time from your billing settings. Cancellation takes effect at the end of the period you have already paid for — you keep access until then. We do not give pro-rata refunds for the unused remainder of a billing period, except where the law requires it.

Nothing in these terms excludes your rights under the Australian Consumer Law. Our services come with guarantees that cannot be excluded — if there is a major failure with the Service you are entitled to the remedies the ACL provides, which may include a refund.

§ 06 · Your data

Your content stays yours

Everything you put into the Service — clients, projects, calculations, proposals, invoices, timesheets — is yours. You grant us only the licence we need to host, process, back up and display that content in order to provide the Service to you. We do not sell your data and we do not use it for advertising. How we handle personal information is set out in the Privacy Policy.

You are responsible for having the right to store the content you enter (for example, your clients' details) and for the accuracy of what you enter.

§ 07 · Engineering results

Calculations are aids, not sign-off

The Service performs calculations from published standards data, and independently re-verifies a calculation before a report is issued. It is a professional aid — it is not engineering judgement, and it does not sign the drawing. You remain responsible for reviewing every input and result, for confirming the method suits your installation and jurisdiction, and for compliance with the laws, standards editions and licensing requirements that apply to your work. Screening-level results should be verified by appropriate detailed methods where a design is safety-critical.

Every calculator and every printed report carries the same reminder: a professional aid, not engineering judgement — you remain responsible for verifying every input and result against the standards that apply to your work.

Standards evolve. Each instrument states the edition of the standard it implements; it is your responsibility to confirm that edition is the one your project requires.

§ 08 · AI features

Where AI is — and isn't

Optional AI features draft prose only — for example the narrative of a fee proposal. AI never produces an engineering figure or a price: numbers come from the calculation engines and your rate card. AI output is a draft; review it before you rely on it or send it to a client. AI features have fair-use limits and can be switched off for your practice.

§ 09 · Acceptable use

What you must not do

  • Use the Service unlawfully, or to store or send unlawful, infringing or malicious content.
  • Probe, breach or test the security of the Service without our written permission, or interfere with its operation.
  • Scrape, bulk-extract, resell or sublicense the Service or its datasets, or use them to build a competing service.
  • Share one seat between multiple people, or misrepresent Service output as something it is not (see § 07).

We may suspend or terminate accounts that breach these terms (see § 12).

§ 10 · Our property

The Service itself

The Service — its software, calculation engines, design, and typeset output formats — is owned by us or our licensors and is protected by intellectual-property law. These terms give you a right to use it, not ownership of it. If you send us feedback or suggestions, we may use them without obligation.

§ 11 · Availability & change

Uptime and evolution

We work to keep the Service available and your data safe — including nightly encrypted backups — but we do not promise uninterrupted or error-free operation, and no service-level agreement applies unless we have signed one with you. We improve the Service continually; if we materially reduce a feature your plan depends on, we will give you reasonable notice.

§ 12 · Suspension & closure

Ending the relationship

We may suspend or terminate your access if you materially breach these terms, if your subscription remains unpaid, or where the law requires it — where practical we will warn you first. You may close your account at any time. After closure we retain and then delete data as described in the Privacy Policy; ask us for an export of your practice data before closing if you need one.

§ 13 · Liability

Limits on our liability

To the extent the law allows: we are not liable for indirect or consequential loss (including loss of profits, revenue or data), and our total liability arising out of or in connection with the Service is capped at the amount you paid us in the 12 months before the event giving rise to the claim. For services that cannot be excluded from consumer guarantees, our liability is limited, at our option, to resupplying the service or paying the cost of having it resupplied.

This clause does not exclude liability that cannot lawfully be excluded, including under the Australian Consumer Law (§ 05), and does not limit your responsibility for your own professional work (§ 07).

§ 14 · Changes to these terms

When the terms change

We may update these terms as the Service evolves. For material changes we will give you notice — by email or a prominent notice in the Service — at least 14 days before they take effect. Continuing to use the Service after that date means you accept the updated terms; if you do not, you may cancel under § 05.

§ 15 · Law & correspondence

Governing law and contact

These terms are governed by the laws of Western Australia, and the courts of Western Australia have non-exclusive jurisdiction. If part of these terms is found invalid, the rest still stands.

Questions about these terms: [email protected] — or the long-form correspondence route on the About page.