Building-Information Modelling Authoring Workflow: The Paper Trail That Nearly Broke Architecture

How One Architect's Journey from Paper Chaos to Digital Precision Can Transform Your Entire Practice

the practitioner stared at her desk — buried under 347 printed sheets, six sets of redlined plans, and a cold cup of coffee she'd poured three hours ago. Her firm had just received another RFI from the contractor: a wall in the section drawing didn't match the floor plan. Again.

She'd spent the weekend fixing coordination errors between elevation views and plan details. She'd hand-corrected door schedules after a client changed the hardware spec. She'd redrawn the same staircase in four different views because nobody caught the riser height discrepancy until the general contractor flagged it on-site.

"There has to be a better way," she muttered.

There was. And it changed everything.

This is the story of how Building Information Modeling (BIM) — and specifically the software developer Revit Architecture — rewrites the rules of architectural practice. Whether you've never opened the software or you're a seasoned user looking for deeper mastery, this guide walks you through the complete journey: from understanding why BIM exists, through every major capability of Revit, to the advanced techniques that separate professionals from beginners.

No fluff. No filler. Just the transformation you need.

The Paper Trail That Nearly Broke Architecture

For centuries, architects communicated through drawings. Hand-drafted lines on paper. Beautiful, certainly. But every drawing was an island.

A floor plan existed independently from a section. An elevation had no intelligent connection to a detail. A door schedule was a manually typed spreadsheet that someone — usually the most junior person in the office — had to reconcile with the actual plans by hand.

Consider the scale of the problem:

Buildings became exponentially more complex. Documentation sets grew from dozens to hundreds to thousands of pages. The number of people touching those documents — producing, evaluating, approving, building from them — exploded.

Yet the fundamental method of documentation hadn't changed. Lines on paper. Lines on screens. Disconnected, unintelligent, manually coordinated lines.

The cost of this approach was staggering:

• Coordination errors between drawings created costly change orders on-site
• Schedule delays from RFIs (Requests for Information) when contractors found conflicts
• Redundant work — the same wall drawn and redrawn in plan, section, elevation, and detail
• Version control nightmares — which drawing set is current? Who made this change? When?

the practitioner experienced all of it. Every architect who's practiced in the CAD era has.

What BIM Actually Is (And Why It Matters to You)

BIM stands for Building Information Modeling. At its core, it's about managing information throughout the entire life cycle of a design process — from early concept through construction and into facilities management.

By "information," we mean everything that goes into a building:

• The number of windows and their specifications
• The cost of materials
• The size of heating and cooling equipment
• The total energy footprint
• Structural loads, spatial relationships, and material quantities

This information lives in a digital model that can be:

• Presented as coordinated documents
• Shared across disciplines (architecture, structure, mechanical, electrical)
• Used as a centralized design management tool

Here's the fundamental difference between BIM and traditional CAD:

BIM Advantages You'll Experience from Day One

When the practitioner finally made the switch, the benefits materialized faster than she expected:

• 3D design visualization improved client understanding and enabled rapid comparison of design options
• Integrated documents minimized cross-referencing errors and keynoting mistakes
• Interference checking revealed conflicts between architectural, structural, and mechanical elements before they became expensive on-site problems
• Automated schedules — door schedules, room-area schedules, material take-offs — that updated themselves
• Material quantity take-offs that improved cost predictability and planning
• Sustainable design strategies that became easier to explore and evaluate

Your First Steps — The Revit Interface Decoded

Facing the Interface (Without Panic)

the practitioner remembers her first time opening Revit. The interface looked different from anything she'd used before. The ribbon, the project browser, the properties palette — it felt overwhelming.

But here's what she learned: Revit's interface is designed around architectural workflows, not abstract CAD commands. Once you understand the organizational logic, everything falls into place.

The Start Page: Your Launch Pad

When you open Revit, the Start Page greets you with clear options:

For Projects:

• Open a recent project (thumbnail previews for quick access)
• Open any existing project
• Create a new project

For Families (Custom Components):

• Open a recently modified family
• Create a new family
• Create a new Conceptual Mass
• Access the Web Library for additional content

The Application Frame: Your Command Center

Revit's interface is organized into distinct zones, each with a specific purpose:

The Application Menu (the big icon at top-left):

• Create new projects or families
• Open existing files
• Save, export, publish, and print
• Access licensing information and application options

The Quick Access Toolbar:

• Customizable toolbar for your most-used commands
• Undo/redo, save, open, 3D view toggle
• Add any ribbon tool here by right-clicking and selecting "Add to Quick Access Toolbar"

The Ribbon:

• Groups workflow-based functions into organized tabs
• Exposes only task-relevant options to reduce overwhelm
• Contextual tabs appear automatically based on your current action

The Project Browser:

• Your navigation hub for the entire project
• Organized tree structure showing all views, families, groups, and linked files
• Floor plans, ceiling plans, 3D views, elevations, sections, schedules, sheets — all accessible here

The Properties Palette:

• Displays and lets you edit properties of selected elements
• When nothing is selected, shows properties of the current view
• Instance properties (unique to one element) vs. Type properties (shared across all elements of that type)

The Drawing Area:

• Your main workspace where you model and document
• Multiple views can be tiled or cascaded
• View Control Bar at the bottom controls scale, detail level, and visual style

Navigation Essentials: Moving Through Your Model

Efficient navigation is the first skill that separates productive Revit users from frustrated ones:

Mouse Navigation:

• Scroll wheel: Zoom in/out
• Hold middle mouse button: Pan
• Shift + middle mouse button: Orbit (in 3D views)

Selection Methods:

• Single click: Select one element
• Tab key before clicking: Cycle through overlapping elements or select connected chains
• Ctrl + click: Add to selection
• Shift + click: Remove from selection
• Window select (left to right): Select only fully enclosed elements
• Crossing select (right to left): Select anything the box touches

Keyboard Shortcuts:

Pro Tip from the practitioner: "I spent my first week just learning navigation. Zooming, panning, orbiting, selecting. It felt slow at first. But by week two, I was moving through the model faster than I ever moved through CAD drawings."

Setting Up Your Project Environment

Before you draw your first wall, you need to establish your project environment:

Templates: Revit uses project templates (.rte files) that predefine settings, families, and standards. Your firm should develop a custom template that includes:

• Standard wall types, floor types, and roof types
• Title block families with your firm's branding
• Predefined view templates for consistent documentation
• Standard annotation families (tags, dimensions, keynotes)
• Scheduling templates for common schedule types

Units: Set your project units early. Revit supports both imperial and metric systems, and you can switch between them at any time. Navigate to the Manage tab to access Project Units.

Levels and Grids: These are the structural backbone of your project. Set them up before modeling begins.

Revit File Formats You Need to Know

Seeing Your Design — Views That Bring Models to Life

The View Paradigm: One Model, Infinite Perspectives

Here's where the practitioner had her biggest mindset shift. In CAD, each drawing was a separate file. In Revit, every drawing is simply a different window into the same model.

A floor plan isn't a drawing you create. It's a horizontal cut through the model at a specific height (typically 4 feet / 1.2 meters above the floor level). A section isn't a separate drawing — it's a vertical cut through the model at a location you define.

This means:

• You never "draw" a floor plan — you model the building, and the plan generates itself
• A change to a wall in plan automatically appears in every section and elevation that shows that wall
• Adding a door in 3D immediately shows it in plan, section, and the door schedule

Types of Views in Revit

Plan Views:

• Floor Plans: Horizontal cuts showing walls, doors, windows, furniture at each level
• Reflected Ceiling Plans: Looking up at the ceiling — shows ceiling grids, light fixtures, mechanical diffusers
• Area Plans: Specialized plans for calculating gross, rentable, or usable areas

Elevation Views:

• Building Elevations: Exterior views from each cardinal direction
• Interior Elevations: Views of interior wall faces (useful for kitchens, bathrooms, feature walls)

Section Views:

• Vertical cuts through the building at any angle
• Created by drawing a section line in plan
• Double-click the section flag (not the line) to navigate to the section view

3D Views:

• Default 3D View: Isometric view showing the entire model
• Camera Views: Perspective views from a specific vantage point (for presentations and renderings)
• Walkthrough Views: Animated sequences moving through the building

Detail Views:

• Callout Views: Enlarged portions of plans, sections, or elevations for detailed documentation
• Drafting Views: 2D-only views for standard details that don't reference the model

Schedules:

• Tabular views of model data
• Door schedules, window schedules, room schedules, material take-offs
• Live and bidirectional — change a value in the schedule, and the model updates

Creating and Managing Views

Creating New Levels (and Plan Views):

Levels are created in section or elevation views. Each level typically represents one story:

1. Open a section or elevation view
2. Select the Level tool from the Datum panel (Home tab)
3. Click two points to define the level line
4. Revit automatically generates a floor plan and reflected ceiling plan for the new level

Critical Distinction: When you draw a new level with the Level tool, Revit creates associated plan views automatically. When you copy an existing level, it does NOT create plan views — only a reference elevation marker. The visual indicator: drawn levels have blue symbols; copied levels have black symbols.

Adding Plan Views to Existing Levels: If you copied a level and later decide you need a plan view, go to the View tab → Plan Views → Floor Plan, and select the level from the dialog box.

View Properties That Control Everything:

View Templates: Consistency at Scale

the practitioner learned this one the hard way. After setting up 47 views for her first Revit project with slightly different display settings, she discovered View Templates — predefined view settings that can be applied to any view instantly.

To create a View Template:

1. Set up a view exactly how you want it (scale, detail level, visibility, graphic overrides)
2. Right-click the view name in the Project Browser
3. Select "Create View Template from View"
4. Name and save the template

To apply a View Template:

1. Select one or more views in the Project Browser
2. Right-click → Apply View Template
3. Choose the template → every selected view updates to match

Pro Tip: You can exclude specific parameters from a template. Maybe you want the template to control visual style and visibility but NOT scale or detail level. Uncheck those parameters in the template's "Include" column.

Schedules: Your Model's Data Dashboard

Schedules are the unsung heroes of BIM. They're not just lists — they're live, bidirectional views of model data.

Types of Schedules:

• Schedule/Quantities: Lists instances of elements (doors, windows, rooms, walls)
• Material Take-Off: Lists materials used in the project with quantities
• View List: Lists all views in the project with their properties
• Key Schedule: Creates lookup tables for standardized data

What Makes Revit Schedules Powerful:

• Modify a value in a schedule, and the corresponding element in the model updates
• Add a filter to show only concrete walls, only exterior doors, only rooms above a certain area
• Sort, group, and total data automatically
• Include calculated values (e.g., 15% recycled content of total concrete volume)

Building the Model — Walls, Floors, Roofs, and Everything Between

The Foundation of Everything: Levels and Grids

Before the practitioner placed her first wall, her mentor gave her essential advice: "Set up your levels and grids first. Everything else references them."

Levels define the vertical story structure of your building. They're horizontal datum planes that establish:

• Floor-to-floor heights
• Reference points for wall tops and bottoms
• Constraints for floors, ceilings, and roofs

Grids define the structural layout — column lines, bearing walls, and spatial organization:

• Grids are vertical datum planes visible in plan views
• They provide snap points and alignment references
• Structural engineers and architects use the same grid system for coordination

Walls: The Core Building Element

Walls in Revit are intelligent objects. They're not two parallel lines — they're multi-layered assemblies with material properties, structural behavior, and automatic join logic.

Wall Types:

Wall Properties You'll Work With:

• Base Constraint: Which level the wall starts from
• Top Constraint: Which level (or unconnected height) the wall extends to
• Location Line: Where the wall is measured from (wall centerline, core centerline, interior/exterior face)
• Structure: The layered composition of materials (finish, substrate, core, membrane)

How Wall Layers Work:

Each wall type is composed of layers, and each layer has:

• A function (Structure, Substrate, Thermal/Air Layer, Finish)
• A material (brick, gypsum board, metal stud, insulation)
• A thickness

Revit uses these layer definitions to automatically create clean join conditions. When two walls meet, the structural layers connect with other structural layers, and finish layers wrap appropriately. This automatic behavior eliminates hours of manual detail work.

Creating Walls:

1. Select the Wall tool (Home tab → Build panel)
2. Choose your wall type from the Type Selector
3. Set the height constraints in the Options Bar
4. Draw walls using multiple methods:
   • Draw lines: Click start point and endpoint for each wall segment
   • Pick lines: Click existing lines (from imported CAD or reference planes) to generate walls
   • Pick faces: Place walls on complex massing surfaces with a single click

Wall Drawing Direction Matters: When you draw walls from left to right, the exterior face defaults to the top of your screen. Press the spacebar while drawing to flip the wall orientation. The flip arrow always appears on the exterior side.

Selecting Connected Walls: Hover your cursor over one wall (don't click), then press Tab to highlight all connected walls in the chain. Click to select the entire chain — then you can change all their types at once.

Curtain Walls: Beyond Basic Walls

Curtain walls are Revit's answer to gridded facade systems. They allow you to:

• Divide a wall surface into a grid that controls panel and mullion placement
• Customize panels individually (glass, metal, solid)
• Replace panels with doors or other families
• Create complex storefront systems and glass facades

Curtain wall components:

• Curtain Grid: The layout lines that divide the wall surface
• Panels: The fill material between grid lines (glass, opaque, custom family)
• Mullions: The framing members along grid lines

Stacked Walls: Vertical Material Transitions

Real buildings rarely use a single wall type from foundation to roof. A common condition: brick on the lower levels, metal panel on upper levels, with a continuous structure behind.

Stacked Walls solve this by combining multiple basic wall types into a single, vertically organized entity. When floor-to-floor heights change (because levels move), the stacked wall adjusts automatically.

Creating a Stacked Wall:

1. Select the Wall tool
2. Choose a Stacked Wall type from the Type Selector
3. Edit the Type Properties to configure which wall types stack and at what heights
4. Mark one sub-wall as Variable — this wall adjusts height automatically when levels move

Floors, Roofs, and Ceilings

These horizontal elements share a common creation paradigm: sketch-based boundary editing.

Creating a Floor:

1. Select the Floor tool (Home tab → Build panel)
2. Revit enters boundary edit mode — a contextual tab appears with sketching tools
3. Draw a closed loop of lines representing the floor boundary (or use "Pick Walls" to auto-trace wall faces)
4. Click "Finish Edit Mode"
5. Revit generates the 3D floor geometry, cutting through walls appropriately

Roofs offer three creation methods:

• Roof by Footprint: Draw the roof boundary in plan, set slope parameters per edge
• Roof by Extrusion: Draw a roof profile in section, extrude it along a path
• Roof by Face: Apply a roof to a massing surface

Ceilings work similarly to floors — draw the boundary, and Revit generates the ceiling plane at the specified height above the level.

Material Layer Routing: Floors, roofs, and ceilings use the same material layer system as walls. When they connect, Revit automatically manages the intersection — wall layers wrap into floor/roof layers according to their function hierarchy.

Doors, Windows, and Components

Doors and Windows are hosted elements — they exist within walls, and removing the wall removes the door/window.

Placing Doors/Windows:

1. Select the Door or Window tool (Home tab → Build panel)
2. Choose the type from the Type Selector
3. Hover over a wall — Revit shows a preview of the element
4. Click to place
5. Use temporary dimensions to position precisely
6. Press spacebar to flip swing direction or opening side

Components are standalone families for furniture, fixtures, equipment, and accessories. They're loaded from the Revit library or custom family files and placed in the model with a single click.

Stairs and Railings

Revit provides dedicated tools for creating stairs and railings that automatically calculate riser heights, tread depths, and code compliance:

Stair Creation Methods:

• Run-based: Define the start, end, and direction of stair runs, and Revit calculates riser/tread geometry
• Sketch-based: Draw boundary lines and riser lines for full manual control

Railings can be:

• Automatically generated along stairs
• Placed along floors, ramps, and other horizontal edges
• Customized with different baluster types, post spacing, and rail profiles

The Power of Modification — Editing Like a Professional

the practitioner's Editing Revelation

Three weeks into her Revit transition, the practitioner realized something: the editing tools weren't just about moving things around. They were designed to maintain relationships, preserve intelligence, and accelerate design iteration.

Standard Editing Tools

Move: Select elements, activate Move, click a start point and endpoint. Hold Ctrl while moving to create a copy. Enable "Constrain" to restrict movement to horizontal or vertical axes.

Copy: Creates duplicates of selected elements. Works across views — copy elements from one level and paste to another using "Paste Aligned to Selected Levels."

Rotate: Two methods:

• Rotate tool: Select, then rotate around a center point. Drag the center of rotation icon to reposition it before rotating
• Spacebar: Quick 90° rotation increments for family components (furniture, fixtures, doors)

Array: Creates multiple instances with consistent spacing. Far more intelligent than CAD arrays:

Move To: 2nd vs. Move To: Last:

• 2nd: The distance between your two clicks becomes the spacing between each element
• Last: The distance between your two clicks becomes the total span, elements distribute equally

Mirror: Creates a mirrored copy of elements across a defined axis. Two options:

• Mirror – Pick Axis: Select an existing element (wall, grid, reference plane) as the mirror line
• Mirror – Draw Axis: Draw a temporary line to mirror across

Align: One of Revit's most powerful and underappreciated tools. Select two elements, and Revit aligns one to the other. Click the lock icon to maintain the alignment relationship — if one element moves, the other follows.

Trim/Extend: Works like CAD's trim and extend but operates on intelligent building elements:

• Trim two walls to form a clean corner
• Extend a wall to meet another
• Works with walls, lines, and other linear elements

Offset: Creates a parallel copy of an element at a specified distance. Works on walls, lines, and reference planes.

Split: Divides a single element into two separate elements at a specified point. Useful for:

• Splitting a wall to assign different types to each segment
• Breaking a floor boundary for complex geometry

Pin: Locks an element in place to prevent accidental movement. Essential for grids, levels, and key reference elements that should never move.

Graphic and Visual Overrides

Beyond physical editing, Revit provides powerful tools to control how elements appear:

Visibility/Graphics Overrides (VV or VG): The master control panel for what appears in each view and how it looks. Control:

• Visibility (on/off) for every element category
• Line weight, line color, line pattern, and surface pattern per category
• Override settings for individual elements

View Filters: Create rules-based visibility controls. Example: show all walls with a fire rating greater than 1 hour in red, while keeping other walls in black.

Graphic Display Options:

• Shadows: Toggle on/off, control sun position and intensity
• Silhouette Edges: Emphasize the outline of the building for presentation views
• Ambient Shadows: Soft shadows that add depth without directional lighting

Advanced Modeling — Where Design Gets Serious

Walls with Integrated Sweeps and Reveals

Real architecture isn't flat-faced walls. Buildings feature cornices, reveals, corrugated textures, and projections. Revit handles these through wall sweeps and wall reveals — profiles that run along the face of a wall automatically.

Wall Sweeps:

• Apply a profile (cornice, base molding, belt course) to a wall type
• The sweep follows the wall wherever it goes — around corners, along curves
• Controlled at the type level (applies to all instances) or instance level (specific walls only)

Wall Reveals:

• Cut channels or grooves into the wall surface
• Useful for control joints, decorative reveals, and material transitions

Curtain Walls: Advanced Design Techniques

Curtain walls become your creative playground when you master the advanced techniques:

Custom Panel Families: Replace standard glass panels with custom-designed families — solid panels, louvered panels, spandrel glass, operable windows. Each cell of the curtain grid can host a different family.

Irregular Grid Patterns: Move individual curtain grid lines to create asymmetric designs. Pin grid lines that should remain fixed.

Curtain Wall as Interior Partition: Use curtain walls for glass office partitions, conference room dividers, and display systems. They're not just for exterior facades.

Roofs and Floors: Advanced Shape Editing

Roof Slope by Arrow: Draw a roof boundary, then add slope arrows to define drainage direction and slope angle independently for different areas of the roof.

Sub-Element Editing: Select a floor or roof, and use "Modify Sub Elements" to add points and split edges. This allows you to create:

• Sloped floors (for drainage or accessibility)
• Warped surfaces
• Custom terraced conditions

Floor and Roof Openings: Use the "Edit Boundary" tool to add openings within floors and roofs for:

• Stair openings
• Elevator shafts
• Atriums
• Skylights

Working with the Outside World — Interoperability

The Reality of Multi-Software Workflows

the practitioner's firm didn't exist in a vacuum. They received civil engineering files in DWG format. The structural engineer used a different software package. The client wanted renderings they could view on their phone. The contractor needed files compatible with their estimating software.

Revit is designed for this reality. It supports extensive import, export, and linking capabilities.

Exporting From Revit

Image Export: Export any view as an image file for presentations, reports, and web content:

DWG Export: Export views to AutoCAD format for consultants, contractors, and regulatory agencies that still use CAD:

• Configure layer mapping to match your firm's or consultant's CAD standards
• Export multiple views or sheets in a single operation
• Control which elements export and how they're represented

Walkthrough Animations: Export as .avi video files for client presentations and marketing.

ODBC Database Export: Export model data directly to databases (a desktop spreadsheet application, Access, SQL Server) for advanced cost estimating, facility management, and data analysis.

Schedule Export: Export schedules as delimited text files that open in spreadsheet applications.

Importing and Linking into Revit

Importing vs. Linking — Know the Difference:

Linking CAD Files (DWG/DXF):

• Use for site plans, consultant drawings, and reference backgrounds
• Control visibility through the "Imported Categories" tab in Visibility/Graphics
• Set correct units and positioning during the link process

Linking Revit Files: When architects, structural engineers, and MEP designers all work in Revit, linking models together creates a coordinated multi-discipline environment:

• View linked content from other disciplines in your model
• Schedule elements from linked files alongside your own
• Control visibility of linked content independently per view
• Dimension to/from elements in linked files
• Copy/Monitor to track changes in linked models (advanced workflow)

Positioning Options When Linking:

Converting 2D Drawings to 3D BIM Models

the practitioner's firm took on a renovation project where the only existing documentation was a 15-year-old AutoCAD plan. Here's the workflow she developed:

1. Link the DWG file into Revit (don't import — linking allows updates)
2. Set the correct scale and position
3. Trace walls using Pick Lines mode — Revit generates walls from the CAD lines
4. Add doors and windows at locations indicated in the CAD drawing
5. Set vertical constraints (wall heights, floor-to-floor dimensions) based on field measurements
6. Remove or hide the linked DWG once the BIM model is established
7. Add remaining elements (roofs, stairs, ceilings) based on survey data

Starting from Scanned Drawings: For projects with only paper drawings available:

1. Scan the drawings to raster image files (TIFF, JPEG, PNG)
2. Import the image into Revit at the correct scale
3. Use the image as an underlay for tracing
4. Build the model on top of the scanned reference