LACONIA — Paul Moynihan, director of Public Works, said yesterday that he expects work to begin next week to address the structural deficiencies that prompted the abrupt closure of the downtown parking garage on Monday evening.
Moynihan said that R.M. Piper, Inc. of Plymouth, the firm that recently completed the reconstruction of the Main Street Bridge, will likely do the work. He said that the repairs will require welding additional steel to beams and joints, especially those supporting the ramps, which have been compromised by corrosion. Moreover, some of the galvanized steel pans, into which the concrete was poured to form the ramps and decks, have also been weakened by corrosion and may require repair. Along with the exposed steel beams, the pans containing the ramps contribute to structural integrity of the garage.
Meanwhile, Dubois & King, Inc., the engineering firm that found the deficiencies in the course of an assessing the condition of the parking garage, will be testing the strength of the compromised steel and evaluating the remaining sections of the garage. Moynihan said that the section of the garage atop the commercial and office spaces along Main Street has suffered from leaks from time to time. The repairs and assessment will be working in parallel," Moynihan said.
The garage was built in 1973 and opened in 1974. Since then it underwent a major upgrade in 1996, which included repainting the steelwork. In 2005, repairs were made to the decks and the middle deck was overlaid and sealed to stem damage from road salt and melting snow. And leafage into the commercial spaces was addressed in 2008.
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