(1) A public work means:
(a) a work to which subsection ( 2), (3) or (5) applies; or
(b) a work declared by the regulations to be a public work.
However, a public work does not include:
(c) a work that is proposed to be carried out within the Parliamentary zone; or
(d) a work that is proposed to be carried out by or for the Commonwealth by way of assistance to an overseas country; or
(e) a work declared by the regulations not to be a public work.
(2) This subsection applies to a work:
(a) that is proposed to be carried out by or for the Commonwealth, either within or outside Australia ; and
(b) either:
(i) in respect of the carrying out of which moneys appropriated by the Parliament are proposed to be expended by the Commonwealth; or
(ii) in relation to which moneys appropriated by the Parliament are proposed to be expended by the Commonwealth.
(3) This subsection applies to a work:
(a) that is proposed to be carried out, either within or outside Australia , by or for an authority of the Commonwealth to which this Act applies; and
(b) either:
(i) in respect of the carrying out of which moneys appropriated by the Parliament, or moneys of the authority, are proposed to be expended by the authority; or
(ii) in relation to which moneys appropriated by the Parliament are proposed to be expended by the Commonwealth or the authority.
(4) For the purposes of subsections ( 2) and (3), it does not matter whether or not the work concerned is a work of which the Commonwealth, or an authority of the Commonwealth to which this Act applies, is proposed to become the owner.
(5) This subsection applies to a work:
(a) that is proposed to be carried out, either within or outside Australia , otherwise than by or for the Commonwealth or an authority of the Commonwealth to which this Act applies; and
(b) of which the Commonwealth, or an authority of the Commonwealth to which this Act applies, is proposed to become the owner; and
(c) in relation to which moneys appropriated by the Parliament are proposed to be expended by the Commonwealth or an authority of the Commonwealth.