Engineering Graphics and Design Grade 12 2021 QP

Engineering graphics and design / P14 NSC EC / September 2021 QUESTION 2: INTERPENETRATION AND DEVELOPMENT Given: * The top view and incomplete front view of a regular triangular pipe penetrating a square pipe. * Starting point X, the centre of the main pipe (vertical pipe) in the top view. * ABis the seam of the square pipe. Instructions: Draw to scale 1: 1, the following views of the interpenetrating pipes: 2.1. The top view. 2.2 The complete front view clearly showing the curve of interpenetration. 2.3 The development of the surface of the square pipe with AB as the seam. * Show ALL hidden detail and folding lines. * Show ALL necessary construction lines. [29] 70 - 40 6 + 4 45 po ASSESSMENT CRITERIA 1 | TOP VIEW 6 2| FRONT VIEW 9 3 | construction 3 4 | DEVELOPMENT "1 PENALTIES (-) TOTAL| 29 NAME NAME [3 Copyright reserved Please tum over