QUESTION $1$:

Appendix A shows two views of a machine casting. Draw, using any scale and in third$-$

angle orthographic projection, the following views of the component:

$1\mathrm{.}1.$ A sectional front view on cutting plane D$-$D

$1\mathrm{.}2.$ A sectional top view on cutting plane $C-C$

$1\mathrm{.}3.$ At $A$ a surface texture with a roughness of $2,5$ micrometers must be produced

without machining.

$1\mathrm{.}4.$ Show that surface B should be machined.

$1\mathrm{.}5.$ Add five dimensions, Scale, projection symbol, and title.