The phrase "a single tier" is correct and usable in written English.
It can be used to describe a structure or system that consists of one level or layer, often in contexts like organization, pricing, or architecture.
Example: "The new pricing model features a single tier, making it easier for customers to understand their options."
Alternatives: "one level" or "a sole tier".
A single tier state pension will be introduced.
At the end of the contracts, however, wages generally snapped back up to a single tier.
The structure had separate entrances at 55th Street and 56th Street, each serving a single tier of one luxury apartment per floor.
Mr. Malone opposes the spinoff because it calls for a single tier of stock with no supervoting rights, reducing his voting control of IAC without giving him a control premium.
When Mr. Diller proposed a spinoff with a single tier of stock at a meeting of the IAC board on Jan . 16 competing lawsuits from both sides landed the next week in the Delaware Chancery Court.
England currently contains 56 administrative units called unitary authorities, so named because, unlike administrative counties, they are not subdivided into districts, boroughs, or cities but instead constitute a single tier of local government.
Six months after nuclear-related sanctions were officially lifted, not a single tier-one European bank is prepared to handle Iranian payments.
Our idea was to develop a single, tiered course to prepare law students for volunteering.
"Going forward, we will have a single, tiered, positive list one which will allow us to build higher walls around the export of our most sensitive items while allowing the export of less critical ones under less restrictive conditions," Obama said in a videotaped statement released Tuesday.
The government's consultation showed strong support for a single-tier pension, he says.
I'm afraid it's time to start writing about the government's plans for a single-tier pension.
