415 Congress Street


1-9

Location

Portland, Maine

Client

Mattson Development

Owner

Kevin Mattson

Project Description

415 Congress Street is a six story brick and terra cotta structure designed by Portland Architect Fredrick Tompson and built in 1911. It is individually listed in the National Register of Historic places. Generally known as the Masonic Building, the front section of the building is comprised of office and retail space.

An emergency assessment with a boom lift was undertaken to identify loose pieces of terra cotta, mortar and sealant that posed an immediate risk of falling to the ground and to observe existing conditions in order to develop an emergency stabilization plan.

The purpose of the terra cotta stabilization work was twofold: 1) to minimize the risk of falling debris from the building by upgrading the coverage and structural capacity of the terra cotta netting, and 2) to mitigate further damage to the building envelop that would have continued to accelerate if left in its pre-stabilization conditions assessment, and additional removal, patching, supporting and containment of projecting terra cotta elements.

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