InfoTown™
Kofi's journey · Commercial · Lesson 2

Measured from the wrong drawing

Before you start

In the story

£40,000 apart, and both sides measured right. From different drawings.

Back to the story

The right way

Measuring

Rex measures from the current published drawings on the CDE, and every measure says which drawing and revision it came from: "Basement, C03".

The valuation

Kofi's valuation lists the drawings it's based on, so the client's quantity surveyor measures from the same ones.

The week after

The numbers agree to within rounding. Kofi files it without a fight, which worries everyone.

The one I hadTwo right answers from two different drawings, and a late payment.
The one that's publishedOne drawing, named on every measure, and numbers that agree.
Think like Kofi

A number is only as good as the drawing it came from. Which drawing, which revision, and is that still the current one? If you can't write it next to the number, don't send the number.

Continue Kofi's journey

Story 3: The notice that never arrived

The ground is worse than the survey said. The contract says how, and how fast, to tell the client. Nobody reads that part.
The right way, explained

The right way, explained

You can't count the houses on a street from last year's map. Both sides need the same map before they argue about the count.

If you're the project manager

If you're the project manager

When the design changes, tell the commercial team the same day. A deeper basement is a cost question before it's a site question.

In the town See it in the town: £40,000 apart, and both sides measured right. How?

Kofi's view: the published shelf. Everyone counts from the same copy, or they argue about the count.

Handing over: authorise, accept, publish Parcels with S codes leave the shared table in the Site Office. They stop at the firm leading the work to be authorised, then travel to the Client Town to be accepted, and arrive on the published shelf with A codes. A dashed route sends rejected parcels back with comments. Below the road, a cupboard of parcels that stay with us never goes to the client. A strip shows S1 to S5 turning into A1, A2 and so on, one A code per work stage. SHARED TABLE AUTHORISE CLIENT TOWN ACCEPT PUBLISHED STAYS WITH US S1S2S3S4S5A1A2An Is it all here,and does it fit? Is it whatwe asked for? Shared: S4 to authorise, S5 to acceptSigned off: n is the work stage Not right? Back with comments S codesA codes
Pick a stopThe last leg

Shared

On the label
IM calls it
Watch out for

This is working from the published version!

Measure, price and build from what's been published, and say which revision you used.

Sam's Heads Up Downloads folders are where revisions go to hide

InfoTown good practice: Work from the current published version on the CDE.

On your job: People will download drawings to measure from. Fine, as long as the revision goes on the measure and someone checks it's still current before the valuation goes in.

For the audit What the auditor will ask
  • Which drawings was this valuation based on?
  • How did you know they were current?
For the audit What good evidence looks like
  • Measures that name their drawings and revisions.
  • Valuations that list the drawings they used.
From the standard
ISO 19650 Working from the published version

ISO 19650 expects people to work from information shared or published in the CDE, with its revision and status shown. Using it to value work is InfoTown's example, not the standard's.

Based on the ISO 19650 series: the ideas come from the standard; the plain-English wording, examples and advice are InfoTown's. ISO 19650 is © ISO and BSI. You'll hear the same language across the industry. Read more for free in the Information Management Initiative (IMI) Framework guidance from BSI and nima. For the full requirements, use the standard itself.