Madrid PAU Technical Drawing II case studies
Madrid PAU Technical Drawing II · Put your knowledge to work in context.
Dibujo Técnico II is the second-year technical drawing subject examined in the EvAU (formerly Selectividad) in the Community of Madrid. It is taken by students aiming at architecture, engineering, industrial design and related degrees, where the mark often feeds directly into the admission score. The Madrid PAU Technical Drawing II case studies are 5 cases and about 3,988 words.
1Reverse-curve link: choosing a buildable tangent radius
A steel tension link joins two pivots whose centres O1 and O2 lie 80 mm apart on a horizontal line. The left boss has radius 12 mm, the right boss radius 7 mm.
766 words, about 4 min2Hexagonal pyramid cut by an inclined projecting plane
A competition entry for a pavilion uses a regular hexagonal pyramid as a roof. The base hexagon has side 30 mm at scale 1:100 and lies on the horizontal plane; the apex is 55 mm above the base centre.
831 words, about 4 min3Isometric drawing versus true isometric projection for a drilled bracket
A manufacturer supplies a bracket whose front face is an 80 × 50 mm rectangle with a Ø30 mm through hole centred in it; the bracket is 15 mm thick. A diagonal stiffener runs across the front face from a point 10 mm above the lower-left corner to a point 10 mm below the upper-right corner, making 35° with the horizontal, and must be drawn in the axonometric view.
779 words, about 4 min4Homology: completing a perspectively transformed panel
A flat metal panel carries a logo that is drawn in perspective on a vertical picture plane. To check the logo, the draughtsman sets up a homology on the drawing sheet: the axis e is the horizontal line y = 0, the centre O is at (0, 4), and a point A(2, 1) of the true shape has its image A′(4, −2) on the same ray from O.
770 words, about 4 min5Sectioning and dimensioning a ribbed cast bracket
A cast bracket is 120 mm long, 70 mm wide and 40 mm high, with a vertical web 12 mm thick, two Ø14 mm through holes on a 90 mm pitch, a central Ø30 mm bore with a keyway 8 mm wide, and a triangular rib 10 mm thick joining the web to the base. The part is symmetrical about the longitudinal vertical plane.
842 words, about 4 min