T-Addr specification

From the wiki:

Addresses: Zcash has two kinds of address: a z-addr is a fully private address that uses the zero-knowledge proving system to shield a transaction and balance privacy. A t-addr (aka “transparent address”) is similar to a Bitcoin address.

Could someone tell me exactly how this T-Addr will look like ? Am i correct in assuming this T-Addr will be used as payment address (alias public key).

For example i am looking for a description like this: A Bitcoin address, or simply address, is an identifier of 26-35 alphanumeric characters, beginning with the number 1 or 3.

That would be helpful information for a regex creation.

The integration guide goes over this: Zcash Integration Guide — Zcash Documentation 5.2.0 documentation

Also see validateaddress RPC call.