Cambridge, MA
Retail Space
Scope/Solutions
In the summer of 2014, a high-intensity rainfall in Cambridge surcharged the city’s stormwater drainage system, resulting in localized flooding near a basement-level retail space. The floodwaters overtopped the sidewalk and flowed down the entryway stairs, inundating the retail space and causing significant damage. SGH investigated the circumstances surrounding the damaging flood event and developed a strategy for mitigating future flooding.
Our investigation included the following:
- Analyzing local rainfall data to quantify the return period of the storm
- Coordinating an elevation survey of the building exterior, as well as an elevation survey and inspection of the stormwater drainage system within the local watershed
- Performing a hydrologic and hydraulic analysis of the city’s stormwater drainage system to estimate flood elevations for select rainfall events
- Determining the probability of repeat flooding
- Developing conceptual strategies to prevent future flooding
SGH coordinated with the owner to determine their goals and designed a flood mitigation strategy considering a 100-year design flood elevation plus 4 in. of freeboard. Highlights of our design include the following:
- Flood barriers that automatically raise into place when floodwater reaches an entrance below the design flood elevation, allowing for immediate deployment without human intervention
- Raised concrete curbs at window wells around the perimeter of the building
- New waterproofing behind the existing brick veneer and on new concrete walls and floor surfaces
Photo by Retail Personnel
Photo by Retail Personnel
Photo by PS Doors
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Project Summary
2015
Completion Date
Solutions
New Construction
Services
Advanced Analysis | Performance & Code Consulting
Markets
Commercial
Specialized Capabilities
Failure Analysis | Risk & Resilience Assessment
Key team members
Additional Projects
Northeast
One Cambridge Place
The project, which would provide CDM with parking for 235 cars and 160,000 sq ft of office space, needed a compressed design and construction schedule. SGH designed the new nine-story structure in time to obtain building permit sixty days after the initiation of design.
Northeast
Four Seasons
Designed by I.M. Pei & Partners and Frank Williams & Associates, the Four Seasons has 368 guestrooms on 52 floors. SGH has worked on several building enclosure assessment and repair projects at the hotel.