Northeast
Braintree Electric Light Department
SGH was the prime consultant and structural engineer for a new 8,000 sq ft warehouse building for Braintree Electric Light Department to accommodate the company’s increased storage needs.
Hartford, CT
Hartford Water Pollution Control Facility, Dry Ash Handling Building
Scope/Solutions
The new Dry Ash Handling Plant at the Hartford Water Pollution Control Facility included a slender, pre-engineered steel handling building. During a strong wind event, the partially erected steel frame underwent significant lateral displacement. Shortly after, the contractor and the erector replumbed the frame and installed additional bracing. The contractor engaged SGH to assess the frame’s condition and determine the cause of displacement.
SGH visited the site to assess the condition of the partially erected steel building, including columns, beams, connections, baseplates, and anchor rods, and determine the cause of the damage. Highlights of our investigation include the following:
- Evaluated additional bracing installed by the contractor and the erector after the building was replumbed to determine if it had adequate strength to resist code-prescribed wind load for structures during construction
- Developed an inspection plan to evaluate steel components installed during the wind event and to identify damaged components
- Visually inspected anchor rods and nuts for thread deformation and mezzanine beam-to-column connections for plastic deformation
- Oversaw magnetic particle testing of the column-to-baseplate welds by others and recommended repairs for locally damaged components
- Analyzed the structure and developed a sequencing plan for erecting the remaining structural steel, equipment, cladding, and masonry walls that would maintain the stability of the structure
- Performed additional calculations and designed additional temporary bracing to accommodate changes in the erection plan
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Project Summary
2015
Completion Date
Solutions
Failure Investigation
Services
Structures | Advanced Analysis
Markets
Industrial
Specialized Capabilities
Temporary Construction | Failure Analysis
Key team members
Additional Projects
Northeast
Foundry
After obtaining the Foundry in 2009, the City of Cambridge sought community input on the best use for the property and found strong support for the arts. SGH served as the structural engineer of record and consulted on the building enclosure.