Orthographic Views Workshop 1 Spatial Visualization lesson 1/workshop 1 Note: The slides are animated so a mouse or keyboard click brings up the next image, text or slide.

Orthographic Drawings Also called “multi-view” drawings /// Image source: (orthographic drawings of 3 sides of multi-cube object) 2012 Cdang, Wikimedia Commons https://commons.wikimedia.org/wiki/File:Figure_7_cubes_CRPE_3e_concours_2012_math_solution.svg

Orthographic Drawings Side View (from left) Top View Front View /// Image source: (3 view drawing) 2009 Biezl, Wikimedia Commons https://commons.wikimedia.org/wiki/File:Dreitafelprojektion.svg (3-view details of house shape) 2009 Biezl, Wikimedia Commons https://commons.wikimedia.org/wiki/File:Dtp-3d_2.svg

Orthographic Drawings Always draw the three views in this arrangement /// Image source: 2016 Jacob L. Segil, College of Engineering and Applied Science, University of Colorado Boulder

Orthographic Drawings Always draw the three views in this arrangement -so they align with each other Top Top /// Image source: 2016 Jacob L. Segil, College of Engineering and Applied Science, University of Colorado Boulder Front Side Front Side

Orthographic Drawings /// Image sources: 2007 Zink, Wikimedia Commons https://commons.wikimedia.org/wiki/File:Isometric_projections_of_an_l_shape.png 2007 Zink, Wikimedia Commons https://commons.wikimedia.org/wiki/File:Orthographic_projections_of_L_shape.png

Orthographic Drawings /// Image sources: (house shape inside clear cube worthographic projections marked) 2004 MdeVicente, Wikimedia Commons https://commons.wikimedia.org/wiki/File:Cubo_proyecciones1.JPG (technical drawing exercise) 2011 Andrevruas, Wikimedia Commons https://commons.wikimedia.org/wiki/File:Desenhotecnico.jpg

Orthographic Drawings Engineering examples /// Image sources: (wooden bench photo & top/front/side view hand drawings): © 2009 Richard M. Weidner. Used with permission. (front and side elevation of a German church in Tilsit): 1980 Siegfried Harbrucker, Wikimedia Commons https://commons.wikimedia.org/wiki/File:Deutsche_Kirche_Tilsit_(Seitenriss).jpg

Orthographic Drawings Tips: Draw views in order: top → front → side Draw lines where edges exist (changes in plane) Show hidden edges using dotted lines Solid lines trump dotted lines

Station 4: Computer-Aided Visualization Workshop 1 Stations Station 3: No-Look Pass In pairs, one student wears a blindfold while the other student builds an object with 5 blocks The blindfolded student holds the object and describes the three orthographic views out loud The partner draws ONLY what is described by the blindfolded student When finished, correct the drawing and switch roles Repeat and practice, moving to larger objects Station 4: Computer-Aided Visualization Read Module 4 – Orthographic Views Complete the orthographic views exercises Station 1: Block Relay Build an object with 8 blocks Draw the three orthographic views Then pass the object to a neighbor and repeat Check drawings for accuracy with neighbor Station 2: Workbook Drill Individually, answer questions on ODD pages ortho1 to ortho24 on scrap paper Check your answers with the answer key Leave this slide up so students know what to accomplish at each station