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Cause and effect

Design it. Witness it. Sign it off.

Build the cause and effect matrix from the zones, devices and systems the job already holds. Witness test every step against its designed delay, and hand over the signed evidence.

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Graftix cause and effect matrix for Kestral House fire alarm and life safety: causes down the side, effects across the top, banded by system, with each filled cell showing its timed steps

Design the matrix

Built from what the job already holds

Causes and effects point at the zones, devices and systems already on the project, or at something by others. Each cell holds timed steps, and every one reads back as a plain sentence.

A cause and effect cell opened in Graftix: the plain sentence for a zone and its sounders, the programmed and tested result, and step 1 with its delay and latching

Graftix cause and effect checks for Kestral House: three fail-safe interfaces not yet proved, and one accepted exception with the reason that prints on every issued revision

Check it and issue it

Find the stair door nothing releases

The checks find the gaps before anyone else does, such as a stair door that no fire condition releases. Issue each revision with its changes clouded, as an A3 PDF or a spreadsheet.

On the drawing

Ask a device what it sets off

Pick a call point on the drawing and ask. Rings, tags and arrows show every door, damper and sounder it sets off, on the real plan.

What a manual call point sets off, shown on the Kestral House ground floor drawing in Graftix: causes ringed with C tags, effects ringed with E tags, and arrows between them

Witness testing

A running clock against every designed delay

Every step is timed against its designed delay, so a late door reads “Passed, late”, and a failure raises a snag. In the latest Graftix Go it all works with no signal, with photo and video evidence.

Sign-off

Everyone signs the same version

Each sign-off sheet carries a fingerprint, so everyone can check they are signing the same version, in person or by an emailed link. The sheet seals once everyone has signed or declined.

A sealed cause and effect sign-off sheet in Graftix: signatures in person and by emailed link, a recorded decline, and the fingerprint in the header

The cause and effect handover pack PDF from Graftix: the cover with its contents, beside the test rounds page listing each round and its results

Readiness and handover

Hand over what was proved

System readiness shows what is still to prove. The handover pack and the O&M section carry the as-commissioned revision, every test round and every sealed sheet.

Read the full cause and effect guide

For consultants

Review without an account

Send the issued matrix by review link. The fire engineer comments on any cell, and sees which revision closed each comment.

For partners

Only their own part

Give a partner, such as the access control subcontractor, limited access. They see the rows, columns and test results that touch their systems, and nothing else.

See it in action

Real screens, in the office and on site

The online review page on a phone: the fire engineer reads the issued revision of the matrix and comments without a Graftix account — The fire engineer's review, on a phone

The Graftix witness screen on a phone, with the clock at 11 seconds and two sounder steps marked seen at 6.2 and 8.8 seconds — Witness testing, timed from activation

A test round in Graftix Go with no signal: one test saved on this phone and waiting to send — Saved on this phone with no signal

Graftix Go witness rows for sounders, each with a Photo or video button for evidence — Photo or video on any step

Signing a cause and effect sign-off sheet from an emailed link on a phone: the declaration, the fingerprint and a signature drawn with a finger — Signed from an emailed link

A manual call point task in Graftix Go with its cause and effect: the 21 effects it sets off when it operates — What a call point sets off

The cause and effect hub in Graftix Go: the project matrices, the round being tested and the earlier test rounds — Matrices and rounds in Graftix Go

Get started

Put one matrix in it. Witness the first step.

Start from a template or the fire engineer's spreadsheet, point it at a building you already have in Graftix, and let the checks do their work.

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