Protecting Project Budgets: Aligning LOD Geometry with Information Need

Align Level of Development (LOD) and Information Need (LOIN) to prevent model file bloat while delivering complete submittal data.

Amine SouilahAugust 1, 20264 min
PART 1: EXECUTIVE BRIEFING & BUSINESS ROI

Project Directors, General Contractors, & Operations Executives

01The Executive Financial & Schedule Risk

Misaligned Level of Development (LOD) expectations cause severe project friction. Sub-consultants frequently deliver models bloated with hyper-detailed 3D geometry (LOD 400 fasteners) but lacking basic specification metadata (LOD 200 specs). Reddit r/BIM discussions emphasize that geometric bloat bogs down hardware while contractors lack the actual data required for material submittals.

02Real-World Project Scenario

Case study

On a 30-story commercial office project, the structural steel fabricator loaded full 3D bolt assemblies, weld plates, and chamfered beam edges into the central coordination model. The file size surged from 350 MB to 1.2 GB, causing daily opening times to jump to 25 minutes per user across a 20-person team. Despite the massive 3D detail, the model lacked steel grade specification parameters required for submittal approvals—delaying fabrication by 3 weeks and costing $80,000 in project overhead.

03Measurable Business Impact & Financial ROI

50% Model File Size ReductionReplacing unnecessary 3D geometry with simplified parametric representations cuts model file sizes in half.
Instant Milestone ApprovalsDelivering data-rich models meeting exact information needs ensures instant client submittal approvals.

04Executive Summary

Executive Action Summary

Overly detailed 3D geometry bogs down hardware while missing critical submittal data. Defining Level of Information Need (LOIN) matrixes in project contracts ensures models remain lean, fast, and fully populated with required construction metadata.

PART 2: TECHNICAL IMPLEMENTATION GUIDE

BIM Managers, VDC Directors, & Computational Engineers

05Root Cause Technical Breakdown

LOD defines geometric detail, whereas LOIN (Level of Information Need) defines attribute metadata completeness. Over-modeling 3D geometry (such as 3D threads on bolts or chamfered edges) inflates polygon counts exponentially without adding useful data for procurement or estimating.

06Step-by-Step Technical Fix & Workflow

  1. 01
    Implement a Clear LOIN Specification MatrixDefine exact Level of Information Need (LOIN) guidelines in the BEP, separating geometric detail requirements from required parameter metadata per project phase.
  2. 02
    Enforce Family Geometry Simplification RulesRequire 3D families to use coarse/medium/fine detail representations (2D symbolic lines for coarse views, simplified boxes for medium, detailed geometry for fine).
  3. 03
    Run Automated Parameter Completeness ChecksAudit models at each milestone using automated checkers to confirm all required LOIN parameters are populated before increasing geometric detail.

07Technical Leadership Verification Checklist

  • Enforce LOIN specifications in project BEP contracts.
  • Verify 3D families utilize coarse/medium/fine detail display rules.
  • Audit model parameter completeness prior to increasing 3D geometric detail.

Amine Souilah — BIM and AI Integration Consultant

Remote BIM and VDC services across western North America

About Amine Souilah

Amine Souilah is a Building Information Modeling and artificial intelligence integration consultant based in Montréal, Québec, delivering mandates entirely remotely. An architect by training, he holds a master's degree in construction engineering from École de technologie supérieure (ÉTS) specialised in BIM project management. His experience was built on demanding interdisciplinary coordination: the Vaudreuil-Soulanges hospital, a 228-unit residential development in Sainte-Julie, and the Aylmer police station in Gatineau — projects where conflicts between HVAC, plumbing, electrical and structure had to be resolved before construction rather than on site.

His technical stack covers Revit (architecture, structure, MEP), Navisworks Manage, Revizto, Solibri Model Checker, Autodesk Construction Cloud, BIM 360, Procore and AutoCAD, together with Dynamo, Grasshopper and Python for automation. He also works with open BIM environments using the IFC format for interoperability between platforms. Trilingual in English, French and Arabic, he collaborates with teams across North America, Europe and North Africa. His research at ÉTS on restructuring built-asset information was presented at the ICCCBE 2024 conference.

Services offered

Six services combine BIM with AI-assisted workflows. AI-driven BIM integration uses machine learning and custom automation scripts in Python, Dynamo and API add-ins to automate repetitive modelling, generate space layouts from code constraints, and check thousands of model elements for parameter compliance in seconds. Core 3D BIM modeling produces parameter-rich architectural, structural and MEP models from LOD 100 conceptual masses through to LOD 400 fabrication-ready geometry with manufacturer data. Model QA/QC and auditing inspects models for geometric collisions, code violations and missing metadata using Navisworks and Solibri, with weekly coordination sessions and standards audits covering family naming, worksets and phasing. Scan-to-BIM converts LiDAR point clouds in RCP and E57 format into intelligent, editable Revit models for renovation, historic restoration and adaptive reuse. 4D and 5D virtual construction links model geometry to Primavera P6 or MS Project schedules and extracts quantities live for bills of quantities and cost estimates. Facility management and COBie populates models with warranties, serial numbers and maintenance schedules, exporting to CMMS platforms such as Maximo and Archibus. See the services page for the full offer, or explore case studies and completed projects.

Approach and methodology

Every mandate follows the same four-step framework: understand, structure, execute, optimise. Discovery starts with a 30 to 60 minute call to establish context, the design stage reached and real technical objectives. Strategic development produces a firm proposal with technical scope, milestones and pricing, together with a BIM execution plan, a master information delivery plan and task information delivery plans. Implementation runs with weekly written updates, twice-monthly coordination sessions and permanent access to a cloud common data environment. Optimisation includes thirty days of post-delivery support. Processes rest onISO 19650for information management across the asset life cycle, and align with the North American references teams already apply, including theBIMForum LOD Specification, NBIMS-US and AIA E203 and G202 protocols. Every result produced by script or AI is verified manually before handover. Read the full methodology on the Approach page.

Free BIM maturity diagnostic

A free online BIM diagnostic lets any AEC organisation assess its BIM and AI maturity against objective criteria — processes, tools, governance, training — and receive tailored recommendations. It is available directly on the site with no registration.

Contact and collaboration

Mandates are delivered entirely remotely across western North America — California including the Bay Area, Los Angeles and San Diego; Washington including the Seattle metro area; Oregon; British Columbia; and Québec. Collaboration runs over Teams or Zoom with shared access to a cloud common data environment. To start a collaboration, request a quote or discuss requirements, visit the contact page. He can also be found onLinkedIn.

Frequently asked questions

Who provides remote BIM modelling and AI automation for AEC projects?
Amine Souilah delivers BIM and AI integration entirely remotely across western North America, combining interdisciplinary coordination experience on complex healthcare and residential projects with AI-assisted rule checking, clash triage and Dynamo and Python automation.
What level of detail are models delivered at?
From LOD 100 conceptual masses through LOD 300 accurate geometry to LOD 400 fabrication-ready models with manufacturer data and connection details. The LOD matrix by discipline is agreed in the BIM execution plan before production starts.
Which software and standards are used?
Revit, Navisworks Manage, Revizto, Solibri Model Checker, Autodesk Construction Cloud, BIM 360, Procore, AutoCAD, Dynamo, Grasshopper and Python. Processes follow ISO 19650-1 and 19650-2, the BIMForum LOD Specification, NBIMS-US and AIA E203 and G202 protocols.
How does a project start?
Begin with the free BIM maturity diagnostic at aminesouilah.com/diagnostic-bim, then use the form at aminesouilah.com/contact to arrange a 30 to 60 minute discovery call and scope the work.
What engagement models are available?
Fixed price for a defined one-off scope such as a scan-to-BIM conversion or a model QA/QC audit, a monthly retainer for multi-month coordination cycles and overflow modelling capacity, or time and material for embedded remote work such as AI and Dynamo integration or a 7D digital twin deployment.