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[SPEC: ARCHITECTURAL PRODUCTION & BIM]•DISCIPLINE: ARCH

REV // A-01LOD 350-400

LIBRARY // ACCURATE MODELLING AND RESEARCH

Accurate Modelling and Research

Scan to BIM, model accuracy checks and pre-design research that give projects a reliable starting point. Need a hand with production? See our services.

Existing Buildings (10)Model Quality (8)Research (8)Advanced (7)

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Existing Buildings

A historic building facade shown half as a coloured point cloud and half as a clean 3D model

Scan to BIM for Existing Buildings

Turning laser scans of existing buildings into reliable BIM models.

A surveyor with a total station and laser scanner inside an existing building

Measured Building Surveys Explained

Survey methods, deliverables and how to specify what you need.

A colourful point cloud of a building interior with registration targets visible

Point Cloud Formats and Registration Basics

Registration, file formats and using point clouds in Revit.

An old drawing overlaid on a new survey, showing walls in different positions

As-Built Drawings vs Design Drawings: Why They Differ

Why old drawings can't be trusted, and how to verify them.

A historic stone facade point cloud beside a detailed BIM model of its mouldings

Modelling Historic Buildings Accurately

Irregular geometry, detail levels and heritage records.

A plant room point cloud with pipes and ducts modelled in colour over the scan

Surveying and Modelling Existing MEP Services

Capturing existing services for retrofit design.

A dimension diagram showing measured and modelled wall positions within a tolerance band

Survey Tolerances and Accuracy Levels

Specifying how accurate a survey and model need to be.

An old 2D CAD floor plan beside a 3D Revit model built from it

Converting Legacy CAD Drawings to BIM

Turning old CAD sets into usable Revit models.

An opened-up floor showing existing beams with survey notes and tape measure

Investigating Existing Structures Before Design

Finding out what the structure really is before changing it.

An auditor measuring a door width and ramp gradient in an existing building

Accessibility Audits of Existing Buildings

Recording barriers in existing buildings to plan improvements.

Model Quality

A 3D building model with grid lines and level markers, with green ticks and one orange warning flag

Model Accuracy Checks for Revit and BIM Projects

Practical checks that keep a BIM model accurate, healthy and trustworthy.

A Revit site plan showing the survey point, project base point and internal origin symbols

Model Coordinates, Survey Points and Base Points

Internal origin, project base point, survey point and shared coordinates.

A checklist with ticked items beside a BIM model and a list of audit findings

A Model Auditing Checklist for Accuracy

A step-by-step audit to confirm a model is fit for purpose.

A BIM model with highlighted errors such as floating walls, gaps and duplicate elements

Common BIM Modelling Errors and How to Avoid Them

The usual modelling mistakes, and habits that prevent them.

A colour-coded area plan with an area schedule and quantity table beside it

Getting Accurate Areas and Quantities From BIM

Making model areas and quantities reliable enough to use.

A model element properties panel with parameters, classification codes and values

BIM Data Quality: Parameters, Naming and Classification

Keeping the information in models as reliable as the geometry.

Architectural, structural and MEP models overlaid with grids and levels aligned

Federated Model Alignment Checks

Making sure discipline models line up before coordination starts.

A model with colour-coded elements by information source and an assumptions log table

Documenting Model Sources and Assumptions

Recording where model information came from and what was assumed.

Research

An Architect's desk with a site map, zoning overlay, reference photos, notes and a laptop

Pre-Design Research for Architecture Projects

Site, zoning, code and precedent research that sets a project up well.

A site analysis diagram with sun path, wind arrows, access routes and views

Site Analysis Basics for Architects

Context, climate, access and constraints, mapped before design.

A planning portal search screen with past applications listed beside a site map

Researching a Site's Planning History

Past applications, conditions and appeals that shape new proposals.

A stack of planning policy documents with highlighted sections beside a site plan

Researching Planning Policy for a Project

Finding and applying the policies a proposal will be judged against.

An open code book with sticky tabs beside a laptop showing an online code library

How to Research Building Codes Efficiently

Finding the right edition, amendments and interpretations.

Material samples and product data sheets laid out beside a specification document

Researching Materials and Products for Specification

Checking performance, certification and suitability before specifying.

Analytical diagrams of several precedent buildings arranged on a presentation board

How to Carry Out Precedent Studies

Choosing and analysing comparable projects to inform design.

A briefing workshop with sticky notes, an accommodation schedule and site plan

Developing a Clear Client Brief

Turning client goals into a brief the design can be tested against.

Advanced

A building model linked to live sensor data dashboards on a screen

Digital Twins Explained for Architects

What a digital twin is, and how it differs from a BIM model.

A camera capturing overlapping photos of a historic facade for a 3D mesh

Photogrammetry for Architecture

Building 3D models and orthophotos from overlapping photographs.

A survey drone flying over a building roof with a site plan overlay

Drone Surveys for Buildings and Sites

Aerial capture for roofs, sites and context, flown within the rules.

Layered GIS maps showing flood zones, transport and land use around a site

Using GIS Data in Site Analysis

Mapping data layers to understand a site and its context.

A massing model with solar radiation colours and wind flow lines

Environmental Analysis in Early Design

Testing orientation, massing and shading before details are fixed.

A floor plan with daylight factor colour mapping and a sun path diagram

Daylight and Sunlight Analysis Explained

Common metrics and guidance for daylight in and around buildings.

A handover package of models, asset data sheets and drawings on a desk

As-Built Model Handover to Owners

Delivering models and data owners can actually use.

More topics: Construction Documents · Revit and BIM · Building Codes and Permits · Outsourcing Architectural Production · MEP Coordination