Department of Technological Education Graphic Communication Nairn Academy

Department of Technological Education Graphic Communication Nairn Academy

Department of Technological Education Measured Perspective The given views show the Front Elevation and Elevation of a house. Eye Level Ground Level Draw a measured perspective of the house from the given spectator point Picture Plane Spectator Point

Department of Technological Education Finding Vanishing Points Start by finding the two vanishing points. Extend the eye level, ground and picture plane lines across the drawing. Draw a line from the spectator point until it reaches the picture plane at each side of the drawing. These lines should be drawn parallel to the sides of the house. Vanishing Point 1 EL Vanishing Point 2 GL PP Draw a vertical line through these points. Indicate the points where these lines cross the eye level line – these are the vanishing points required. SP

Department of Technological Education EL Height Line 2 Using the edges of the building, project lines up to the picture plane, and then vertically to find a height line at each side of the drawing. Height Line 1 Finding Height Lines VP 2 VP 1 GL PP SP

Department of Technological Education EL HL 2 HL 1 Projecting Heights VP 2 VP 1 GL PP Add the heights of the building onto each of the height lines. This is best done in stages so that the drawing is easier to read. Start with the building and later the heights for the windows and doors can be added. SP

Department of Technological Education EL HL 2 Taking one wall at a time, project lines from the spectator point through the corners of the wall to the picture plane. HL 1 Drawing House Gable VP 2 VP 1 GL Where the picture plane and the projected lines cross draw vertical lines. PP These lines will guide you for the position of the wall and for the ground line and roof height on the house. SP

Department of Technological Education EL HL 2 To find the outline of the wall, lines need to be projected from the vanishing point through the correct height points until they cross the vertical lines just drawn. HL 1 Drawing House Gable (2) VP 2 VP 1 GL PP As these drawings can become quite complicated it is wise to darken the edges as you find them, although take care that all the edges being darkened are visible at the end. SP

Department of Technological Education To draw the front wall of the house the same process is carried out. EL Not all of the lines for this wall will be darkened at this stage as the porch in front of the house still has to be added and this will hide some of the lines. HL 2 HL 1 Drawing Front Wall VP 2 VP 1 GL PP SP

Department of Technological Education To draw the roof of the house the same process is carried out. EL HL 2 HL 1 Drawing Roof VP 2 VP 1 GL PP SP

Department of Technological Education Porch Gable - Method 1 (The projection lines used to construct the house have been deleted for clarity. ) EL Find the vertical lines for the porch. This is done in the same way as the lines for the main house. HL 2 HL 1 There are two different ways to construct the gable of the porch. VP 2 VP 1 GL PP Find the height of the roof where it meets the house wall. This requires the projection line from VP 1 to change direction when it meets the front corner of the house and project towards VP 2. Find the distance that the porch projects forward from the house SP

Department of Technological Education To draw the front of the porch it is necessary for the height of the roof at the front to be found. Project from VP 1 through the height point and draw across the gable. When any corner of the building is reached the projected line changes to the other VP. EL HL 2 HL 1 Porch Gable – Method 1 VP 2 VP 1 GL PP This means that the projected line will change direction at the house front corner and the corner where the porch and house meet. Darken the edges to complete the gable of the porch. SP

Department of Technological Education In this version the height of the gable points can now be found by projecting directly from VP 1 onto the vertical lines for the corners. EL HL 3 HL 1 The second method requires a new height line to be constructed, using the gable edge on the plan to find its position. HL 2 Porch Gable - Method 2 VP 1 GL PP When the gable has been constructed, darken in the required edges. SP

Department of Technological Education The remainder of the porch roof can now be completed. Firstly draw the vertical lines for each of the corners EL HL 2 HL 1 Porch Roof VP 2 VP 1 GL PP Now project the lines from the gable to VP 2 to find the shape of the roof structure. SP

Department of Technological Education EL HL 2 The porch can now be completed by adding the final lines for the front surface. HL 1 Completing Porch VP 2 VP 1 GL The porch can be darkened in and the remaining visible ground lines of the main building can be added to complete the main outline of the building. PP SP

Department of Technological Education The doors and windows are positioned following the same procedures. (The existing construction lines have again been removed for clarity) Firstly, you will need to mark the positions of each window and door on to the plan view and the required heights onto the height line if this has not already been done. EL HL 2 HL 1 Windows and Doors VP 2 VP 1 GL PP Project lines through each of the plan points up to the PP and then project vertical lines through each. Project from VP 1 through the height points onto the gable of the building. Locate the position and shape of each door or window and darken the outlines. SP

Department of Technological Education The windows and doors on the front of the building are found in the same way. EL HL 2 HL 1 Windows and Doors VP 2 VP 1 GL PP SP

Department of Technological Education To complete the drawing the window and door on the porch are added. EL HL 2 HL 1 Windows and Doors VP 2 VP 1 GL PP SP

Department of Technological Education This final slide shows what the completed house should look like. EL HL 2 HL 1 The Completed Drawing VP 2 VP 1 GL PP SP

Power. Point Presentation produced by John Mc. Rae, Nairn Academy 2003