The phrase "strictly require" is correct and usable in written English.
You can use it when describing something that is absolutely necessary for something else to happen. Example: The company strictly requires that all new hires complete an orientation course before they are given access to confidential files.
Repeatedly, the Israel Defense Forces failed to adequately distinguish between combatants and civilians, as the laws of war strictly require.
And yet, though the plot doesn't strictly require it, the new book sends Parrot on a detour to Australia, then still a penal colony.
From the start, the show has featured copious helpings of pay-cable nudity, much of it in scenes that don't strictly require a woman to display her impressive butt dimples as the backdrop for a monologue about kings.
While Merkel's Christian Democrats (CDU) and the CSU are traditional allies, Merkel's party does not strictly require the support of the one-state sister party to form a governing coalition.
Mr. Salgado, a concerned journalist, produces reportage and propaganda, an honorable ambition but different from Evans's, which doesn't preclude Mr. Salgado's making great art (see Goya and David) but doesn't strictly require it, either.
Likewise, (4b) and (4d) strictly require a positive constant, which translates to (42).
He would also have to be satisfied that such an order was "strictly required".
Some structural engineers have criticized Mr. Calatrava for including expressive forms not strictly required by functional needs.
Many authors cite colleagues, bosses and mentors out of courtesy or supplication rather than because such citations are strictly required.
All novelists are scholars of human behavior, but Ian McEwan pursues the matter with more scientific rigor than the job strictly requires.
Labor and Industry, caught in a sensual embrace, seem to be more committed to producing the fruit of their union than the allegory strictly required.
