Knowledge / AEC-native Data
As-built drawings and handover packs
The record set describing the building as constructed, together with the health and safety file and the information required for the golden thread.
At practical completion the contractor hands over the record of what was built: the as-built or record drawings, the health and safety file required under CDM 2015, the asset information, and for a higher-risk building the golden thread information. It arrives as thousands of files in folders named by several subcontractors, and the client's FM team inherits it and searches it for years. The record drawings are usually the last construction issue with a stamp, and the changes made on site live in instructions and RFIs the pack does not contain. As-built drawings AI is worth having only if it can tell a record from a superseded issue and read the pack against the instructions that changed the building, with every answer traceable to the sheet it came from.
What Teams Ask of the Data
Which drawing is the record for this area, and which earlier issues are superseded even though they also carry an as-built stamp?
Does the record drawing show the change made by this instruction, or was it never picked up?
On a refurbishment, where is the pre-refurbishment asbestos survey, and which residual risks does the H&S file carry forward?
Which drawing shows this valve, this isolator or this access hatch, and what does the O&M manual call it?
Is the pack complete against the employer's information requirements, and what is missing?
Which record drawings were re-drawn and which are marked-up construction issues?
For a higher-risk building, which documents in the pack form part of the golden thread information?
What Generic AI Misses
A handover pack is a folder tree, and a folder tree carries almost no meaning. The relationship between a record drawing, the instruction that altered what it shows, the commissioning certificate for the plant on it and the residual risk in the H&S file exists only in the heads of the people who compiled it. Read the files as text and a general-purpose tool sees a drawing titled as-built and treats the title as the fact. It cannot tell that two sheets with the same number and the same stamp differ by one riser position, or which of them the site team actually built from.
The record is also incomplete by its nature. The last change to the level 3 riser was an instruction, the reason for it was an RFI, and the day it was built is in a site diary. None of those documents are in the handover pack, so a tool reading the pack alone has no way of knowing that the drawing it is quoting was overtaken. Its answer will name a drawing, a revision and a location, and will read as if a competent document controller wrote it. An FM engineer will send someone to open the wrong ceiling. The confidence of the answer is the problem, because a hesitant one would have been checked.
What Structured Knowledge Answers
QUESTION
Which drawing shows the current position of the level 3 electrical riser after the instruction that moved it, and has the record drawing been revised to show it?
ANSWER
The riser was moved from grid C/7 to C/8 by instruction 112, issued in response to RFI 204, which identified a clash with the sprinkler main shown on the mechanical services layout. The electrical services layout for level 3, drawing E-2103, was revised to rev C05 to show the new position, and rev C05 is the sheet marked as-built in the handover pack. The architectural general arrangement for level 3, drawing A-2103, is in the pack at rev C03 and still shows the riser at C/7, also with an as-built stamp. The architectural sheet is therefore superseded in fact but not in the pack, and the discrepancy is one the FM team would raise with the contractor before accepting the pack. The H&S file carries no residual risk for the riser at either position.
SOURCES
instruction 112; RFI 204 and response; drawing E-2103 rev C05, level 3 electrical services layout; drawing A-2103 rev C03, level 3 general arrangement; drawing M-2103 rev C04, level 3 mechanical services layout; H&S file, residual risk register.
Illustrative. The project, documents and references are invented to show what an answer looks like; nothing in it is advice.
We onboard a focused slice of your project data, configure the ingestion paths, extract a structured context graph, and build a workflow against the resulting structured knowledge layer.
The Data in Context
The handover pack is where the O&M manuals, the record drawings and the asset information meet, and it inherits everything the construction drawings and the IFC and BIM models carried through the project. Handover pack structuring is the workflow that turns it into a register the FM team can use, and lessons learned capture reads it for the changes that were made late and why.
Related Knowledge
O&M manuals
The operation and maintenance documentation handed over at completion: asset registers, manufacturer data, commissioning records, warranties and maintenance schedules.
Construction drawings
The 2D graphical record of design intent: plans, sections, elevations, details, schedules and title blocks, issued as sheets with revisions.
IFC and BIM models
The federated 3D information model and its IFC exchange format: objects, properties, classifications, relationships and geometry.
Handover pack structuring
Turning the handover deliverables into a structured asset and information register, with every record linked to its source document and drawing.
Lessons learned and institutional knowledge capture
Capturing decisions, defects, precedents and outcomes from completed projects into structured knowledge the next project can reuse.
Does it read marked-up construction issues as well as re-drawn as-built sets?
Can it check the pack against our information requirements?
How do we see it on a handover pack we have already received?