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Let’s discuss your requirements and see how our expertise in Construction Verification can help on your next project.

Plowman Craven has more than 50 years’ experience providing integrated measurement and consultancy services to the property and infrastructure markets.

Talk to our expert

01582 765566
webenquiry@plowmancraven.co.uk

Construction Verification

Verification services precisely record and compare the as-built condition against the design intent
Verification services precisely record and compare the as-built condition against the design intent

Valuing Independent Verification

In the Design Phase:

  • De-risks design intent and provides confidence in existing built information. In doing so, the likelihood of re-work, programme creep due to inaccurate base data, and consequential contractual variations are minimised.

In the Construction Phase:

  • Fulfils client’s verification requirements pre-handover, often stipulated in scope of services (particularly BIM projects).
  • Provides main contractor with a level of confidence in sub-contractor deliverables before sign-off.
  • Provides designers with confidence that what exists on site reflects their designs. Should variances exist, these can be highlighted and resolved in a timely fashion.

In the Operations & Maintenance Phase:

  • With verified as-built information, decision making for OPex (O & M) and CAPex (refurbishment) works can be built on robust and accurate information.
Bim Grid Verification Warehouse Logistics

Viable Verification

Plowman Craven offers a number of independent verification options that look to either verify the as-built condition on site to satisfy client verification requirements, or instead de-risk the design intent through verifying the geospatial assumptions made. We generally recommend either:

  • A ‘quick touch’ reporting approach, usually undertaken in a short duration which aims to highlight, in our opinion, the key discrepancies between the design intent and as-built condition.
  • A detailed and rigorous approach, undertaking a full review of all as-built elements and comparing their type and position (translation and rotation) in comparison to the design intent. We utilise a RAG (Red Amber Green) rating system to illustrate conformance to agreed tolerances.

To ensure that we capture all elements within the site, it's sometimes necessary to attend site multiple times once milestones are reached, e.g. pouring of slab completion, post-erection of primary frame, post-installation of upper floor steels and deck, completion of first fix.

Bim Warehouse Tolerance

Visualising Verification

An example of a typical project tolerance criteria is as follows;

A comparison analysis will be undertaken through a Red, Amber, Green system, enabling clear illustration of whether the permissible tolerances have been achieved, are close to the permissible limit, or are not compliant.

  • Red – Not compliant; Identified if deviation is less than 0% or greater than +2% of the defined critical dimensions.
  • Amber – Close to permissible limit; Identified if deviation is between +1.0% to +2% of the defined critical dimensions.
  • Green – Compliant; Identified if deviation is between 0% to +1% of the defined critical dimensions.
Capturing the shell and core
Capturing the shell and core
Verifying design intent
Verifying design intent
Capturing the primary portal frame
Capturing the primary portal frame

How Can We Help?

Let’s discuss your requirements and see how our expertise in Construction Verification can help on your next project.

Plowman Craven has more than 50 years’ experience providing integrated measurement and consultancy services to the property and infrastructure markets.

James Gregory

Talk to our expert

01582 765566
jgregory@plowmancraven.co.uk

James Gregory
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