Where an order of an Inspector or Chief Official made
under this section is not complied with within the time specified
therein or, where no time is specified, within a reasonable time in
the circumstances, the Chief Official may order that all or any part
of the construction of the building or demolition respecting the building
or structure or other activity which contravenes this chapter cease,
and such order shall be served personally as required by this chapter
on such persons affected thereby in such manner as the Chief Official
specifies, and a copy thereof shall be posted on the site of the construction
or demolition or other activity, and no person except an Inspector
or the Chief Official shall remove such copy unless authorized by
an Inspector or Chief Official.