Introduction to BIM Module 07 – Materials, Lights, and Rendering

Introduction to BIM In this lesson, students explore how to use Autodesk® Revit® software to adjust the appearance of the building model elements that appear in their 2D and 3D views Students will learn how to: –Assign materials to model elements through object styles, type properties, and instance properties –Adjust the render appearance of materials to display realistic views –Render views to create realistic views in daylight and artificial lighting conditions Lesson Overview

Introduction to BIM After completing this lesson, students will be able to: Explore the visual effect of specifying various materials for different building elements Appreciate the importance of providing adequate dayilighting and artificial lighting sources in a building Accurately present views of buildings models in realistic and effective ways Learning Objectives

Introduction to BIM In this exercise, students will be able to: Assign materials to model elements by object category Assign materials by altering an element’s type properties Assign materials by specifying an element’s instance properties Exercise 01: Assigning Materials to a Component

Introduction to BIM Understanding how materials are assigned to elements Materials assigned by settings for deepest level specified Object styles –By category –By subcategory Type properties Instance properties Paint tool Assigning Materials to Model Elements

Introduction to BIM Assigning materials to model elements by object category Open Object Styles dialog Categories with no material assigned display as gray in model Choose materials to assign to model categories Expand categories and assign materials to model subcategories Assigning Materials to Model Elements

Introduction to BIM Assigning materials by type properties Select element Edit type properties Click in materials field and choose material Click … button to open Materials dialog When material assigned, default material for model category used Assigning Materials to Model Elements

Introduction to BIM Assigning materials by instance properties Select element Click in materials field and choose material Click … button to open Materials dialog Choose material to assign to this instance only Assigning Materials to Model Elements

Introduction to BIM Student Exercise Create a new floor type using a different material and thickness for the deck at the east side of the residence and studio and the ramp from the driveway Change the materials assigned to the Console Table in the living room of the residence to match the other furniture in the room Exercise 01: Assigning Materials to a Component

Introduction to BIM In this exercise, students will be able to: Create new materials by duplicating existing ones and setting the shading color and surface pattern Replace the render appearance assigned to materials using options available in the Autodesk library Adjust settings to fine-tune or alter a material’s render appearance Exercise 02: Creating New Materials

Introduction to BIM Creating materials by duplicating and setting the shading color and pattern Open Materials dialog Duplicate and rename an existing material Choose shading color and surface pattern –Drafting patterns –Model patterns Click OK to create material Changing Graphic Display and Render Appearance

Introduction to BIM Replacing the render appearance using options available in the library Open Materials dialog and choose material Switch to Render Appearance tab Click Replace… to open render appearance library Choose new render appearance Enable Use Render Appearance for Shading Changing Graphic Display and Render Appearance

Introduction to BIM Adjusting settings to fine-tune or alter a render appearance Open Materials dialog and choose material Switch to Render Appearance tab Select image file name and choose an appropriate material image file to replace it Choose finish option Enable Use Render Appearance for Shading Changing Graphic Display and Render Appearance

Introduction to BIM Student Exercise Create new materials to be assigned to the Eames chair in the living room of the residence, and choose an appropriate render appearance for realistic and rendered views Open the Living Room Interior view and choose the realistic visual style to see the new render appearances applied to the elements Exercise 02: Creating New Materials

Introduction to BIM In this exercise, students will be able to: Choose the rendering quality and set the output resolution Limit the region rendered Specify sun settings to set the lighting level and cast accurate shadows Edit background properties to set how the sky will be rendered Fine-tune the exposure settings of a rendered image Exercise 03: Exterior Renderings

Introduction to BIM Using the ViewCube® and Steering Wheels® to change camera position Use ViewCube® –Click corners, edges, and faces to re-orient –Drag to rotate model –Click home icon Use SteeringWheels® –Drag orbit control to rotate –Pan, walk, or look around Duplicate to create new 3D view with camera settings Creating 3D Default / Birdseye Views

Introduction to BIM Using the section box to create 3D plans and section views Open 3D view Turn on section box option in Extents section of view properties Move the faces of section box to cut away parts of the model Creating 3D Views

Introduction to BIM Using the Camera tool to create new perspective views Open the Camera tool Click in view to place camera Drag to set target location and far clip offset Rename new perspective view in Project Browser Creating 3D Views

Introduction to BIM Adjusting crop region, far clip offset, and camera and target positions Use controls in View Control bar to show crop region Right-click view, then choose Show Camera to display camera in floor plan view Move camera, target, or far clip offset Set eye and target elevations Use widgets to dynamically change view Creating 3D Views

Introduction to BIM Student Exercise Create an interior perspective view of the living room in the residence by using the camera tool Duplicate the default 3D view and move the faces of the section box to displays the interior features of the residence residence and the studio by cutting through the spiral stairs as shown Exercise 03: Creating 3D Views

Introduction to BIM In this exercise, students will be able to: Use the View Control bar to change display properties Display shadows and specify the location of the lighting source Set a project’s location and orientation to cast accurate shadows in a solar study Use Graphic Display Options to enhance the silhouettes and add gradient backgrounds Exercise 04: Adjusting the Appearance of Elements

Introduction to BIM Modifying elevation and section view properties Use controls in View Control bar to quickly set: –View scale –Level of detail –Visual style –Cropping and visibility of crop boundary Setting View Properties and Display Options

Introduction to BIM Student Exercise Use the Camera tool to create an exterior perspective view, that shows the east exterior walls of the residence and studio Duplicate this view and display it using the Shaded with Edges and Realistic visual styles Adjust the Graphic Display Options to cast accurate shadows Exercise 04: Adjusting the Appearance of Elements

Introduction to BIM Assigning Materials to Model Elements If you cannot find material settings in an element’s type or instance properties, how can you assign materials to the object? What are the advantages and disadvantages of assigning materials as type properties versus instance properties? If you want to define a new material for some elements in you model, is it better to change an existing material or to duplicate one and change the settings of the new material? Assessment

Introduction to BIM Changing Material Display and Render Appearance If you want to change the render appearance of some of the elements in your model, is it better to modify an existing material’s settings or to create a new material and assign it to those elements? When creating new render appearances from photographs or scanned images of materials, what types of images work best? Assessment

Introduction to BIM Key Terms Used Key TermDefinition Rendering The process of creating realistic images of a model by replacing the shaded appearances of materials assigned to the visible elements with images of actual materials. Model category A grouping that includes similar model elements. For example, tables, chairs, and beds are all members of the Furniture model category. Materials can be changed by editing an object category’s style. Object style Settings that determine how elements that belong to a model category are displayed if the materials are not assigned through the element’s type or instance properties. Lighting scheme A setting that specifies the sources of light that should be considered when rendering a view. Rendering The process of creating realistic images of a model by replacing the shaded appearances of materials assigned to the visible elements with images of actual materials.

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