PEMBROKE PINES, FL. (AP).- The memorial started with a steel beam salvaged from the World Trade Center — a small piece of the terrorist attacks that the city of Pembroke Pines, Florida was determined to honor in its own way. Nobody from the Fort Lauderdale suburb died on September 11, 2001. But plans for its memorial grew ever more elaborate, at one point projected to cost more than $1 million. “It was a glass-enclosed, air-conditioned house,” recalled the city’s mayor, Frank Ortis. “With a reflection pool and water running down, hurricane-resistant glass. Obviously we couldn’t do that.” Hundreds of small memorials to Sept. 11 have blossomed across the country in the 10 years since the attacks. But in many towns, as in Pembroke Pines, what began as a simple tribute to the dead turned into an expensive headache as the cost of building such memorials bal-