ORTHOGRAPHIC PROJECTIONS OF BUILDINGS The student will be able to 4.2.3 develop roof surfaces and determine bevels. 4.2.4 draw sectional views of various pitched and flat roofs. 4.3.1 apply the principles of orthographic projections to buildings. 4.3.2 draw sectional elevations of buildings. Roof development and determination of bevels. (angle of inclination. Sectional views of pitched and flat roofs. Orthographic projections of building plans and elevations. Sectional elevations of buildings up to two floors. Assist students to discuss the principles and methods of developing surfaces of roof. Guide students to demonstrate the techniques of determining the roof bevel. Guide students to develop types of roof surfaces and indicate bevels. Illustrate how to draw sectional views of various pitched and flat roofs for students to practise. With models and charts, illustrate the orthographic projections of buildings with students. Guide students to use different scales in drawing sectional elevations of buildings. Assist students to visit building industries and construction sites to see at firsthand the relationship between the buildings and the drawings. Guide students to write report after visit. Students to develop given surfaces of roofs. Students to determine the bevel position of a roof. Students to draw the sectional views of selected flat and pitched roofs. Students to apply the principles of orthographic projection to buildings. Students to use different scales for drawing sectional elevations. Students to write group report after industrial visit and discuss in class.
26 UNIT SPECIFIC OBJECTIVES CONTENT TEACHING AND LEARNING ACTIVITIES EVALUATION UNIT 4 WORKING DRAWINGS
